Best Generator Oil Filters for 2026

The Generac 070185ES OEM Oil Filter 2-Pack is a genuine replacement component designed for homeowners and business operators who rely on Generac standby generators and portable generator models for critical power backup. This product is ideal for anyone serious about maintaining their generator's longevity and ensuring reliable operation during extended outages.

What sets this filter apart is its authentic OEM engineering combined with impressive cross-brand compatibility. The filter fits all 8-20kW air-cooled standby units from 2008 onward, including Guardian, Centurton, Bryant, Watchdog, Dayton, Siemens, and Carrier models, plus over 40 portable generator models ranging from 10-17.5kW. The M16 x 1.5 thread size ensures a secure fit, and the ability to replace part numbers 070185, 070185E, and 070185F makes this a versatile maintenance solution.

Build quality reflects Generac's reputation for durability. The filter uses quality materials designed to withstand the demands of generator operation, providing effective particle filtration to protect your engine. Users consistently report perfect fit and reliable performance, with reviewers noting this represents an upgrade from previous models while maintaining excellent value for a genuine OEM part.

The main consideration is that this is a 2-pack, which works well for backup supplies but may exceed the needs of casual users. Additionally, Generac recommends consulting your owner's manual to confirm proper part number identification before installation, as compatibility spans multiple models.

For generator owners who understand that proper maintenance is essential to protecting a significant investment, the Generac 070185ES delivers authentic OEM quality, proven reliability, and excellent value in a convenient 2-pack format.

This OEM filter is engineered for broad compatibility across Generac's product lineup. For standby generators, it fits all 8, 10, 12, 13, 14, 15, 16, 17, 18, and 20kW air-cooled units from 2008 onward across the Generac, Guardian, Centurion, Bryant, Watchdog, Dayton, Siemens, and Carrier brands.

Portable generator models supported include: 5501, 5502, 5503, 5504, 5505, 5506, 5518, 5520, 5522, 5523, 5524, 5525, 5348, 5395, 4389, 4673, 4758, 5280, 5240, 5247, 5241, 5242, 5248, 5281, 4456, 4390, 4675, 4666, 5011, 4670, 4759, 4451, 4583, 4987, 4582, 4986, 5209, 4916, 5820, 5821, 5838, 5870, 5871, 5872, 5873, 5874, 5875, 5882, 5883, 5884, 5885, 5886, and 5887.

Always consult your generator's owner's manual to verify the correct part number before ordering to ensure proper fit and installation.

Regular oil filter changes are critical for generator longevity and performance. The OEM Generac filter should be replaced according to your generator's maintenance schedule, typically every 50-100 hours of operation or annually, whichever comes first.

Keeping spare filters on hand ensures you're never caught without a replacement during extended power outages or emergency situations. The 2-pack format makes this an ideal solution for homeowners and businesses that want to maintain their equipment without frequent reordering.

Always use genuine OEM filters to ensure proper fit, optimal filtration, and engine protection. Generic aftermarket filters may not meet Generac's engineering specifications and could compromise your generator's reliability when you need it most.

The Generac 070185ES is the official OEM oil filter for Generac generators and compatible brands manufactured from 2008 onward. This product is ideal for generator owners who perform their own maintenance and want the confidence of using genuine manufacturer parts for their standby or portable power systems.

The standout feature is the 90mm extended design, which provides 30% more filter media than standard filters. This larger capacity means better engine protection, fewer contaminants reaching critical components, and extended intervals between oil changes. Real-world testing from verified customers confirms zero leaking and reliable performance during extended generator runtime.

Built with quality paper and metal construction, this filter meets Generac's engineering specifications for optimal flow rates and filtration efficiency. The bulk-packed new condition ensures you receive a fresh filter ready for immediate installation. Its universal compatibility across multiple Generac models, from 10kW portable units to 22kW standby generators, makes it a practical choice for households with varying power backup needs.

The main limitation is that this filter only fits generators produced after 2008. Additionally, owners should verify their specific model number against the compatibility list, as Generac has used multiple part numbers (070185, 070185E, 070185ES) for essentially identical products with only color designation changes.

This is a straightforward, reliable replacement part that delivers genuine OEM quality at an accessible price point. For any Generac generator owner seeking dependable maintenance supplies and the peace of mind that comes with original equipment, this filter is the clear choice.

This filter (070185ES) is compatible with Generac generators 10kW and larger manufactured after 2008. It fits all air-cooled standby models including 10, 12, 13, 15, 16, 17, 18, and 20kW units from Generac, Centurion, Siemens, and Eaton brands.

For portable generators, it works with Generac XP, XG, and Ultra Source series models rated 10 to 17.5kW. The extensive model list includes popular units like the 5501, 5502, 5503, 5504, 5505, 5506, 5518, 5520, 5522, 5523, 5524, 5525, 5348, 5395, 4389, 4673, 4758, and many others. Always consult your generator's owner's manual to confirm the correct part number before ordering.

The TONYCO 070185E is an aftermarket oil filter designed as a cost-effective replacement for Generac Guardian and compatible air-cooled standby generators ranging from 8kW to 24kW. This filter is ideal for homeowners and business owners who need reliable engine protection without premium OEM pricing.

What sets this filter apart is its 99% filtration efficiency combined with a high-performance media design that maximizes dirt-holding capacity. The leak-proof aluminum construction follows strict OE standards, ensuring the filter performs like the original component while resisting cracks and breakage that can compromise engine health. Installation is straightforward, with a spin-on design that requires no special tools or modifications.

The filter's engineering emphasizes durability and reliability across demanding generator use cases. Whether you're running a home backup system or portable outdoor generator, the robust build quality and advanced filtration technology work together to extend engine life and reduce maintenance frequency. The aluminum exterior adds structural integrity while the internal media handles heavy filtering loads effectively.

The main consideration is that this is an aftermarket product rather than an OEM filter. While it meets strict manufacturing standards and carries a 1-year warranty, some users may prefer the official Generac brand for absolute assurance. Additionally, each generator model may have slightly different installation nuances not fully covered in generic documentation.

Overall, the TONYCO 070185E represents excellent value for generator maintenance. With strong customer reviews highlighting perfect fits and reliable performance, combined with universal compatibility across 40+ generator models, this filter delivers professional-grade protection at an accessible price point.

This oil filter replaces OEM part numbers 070185ES, 070185E, 070185B, 070185D, and 070185F. It is compatible with Generac, Guardian, Centurion, Bryant, Watchdog, Dayton, Siemens, and Carrier air-cooled home standby generators rated 8kW to 20kW, plus portable outdoor generators up to 24kW.

Compatible models include the 5501, 5502, 5503, 5504, 5505, 5506, 5518, 5520, 5522, 5523, 5524, 5525, 5348, 5395, 4389, 4673, 4758, 5280, 5240, 5247, 5241, 5242, 5248, 5281, 4456, 4390, 4675, 4666, 5011, 4670, 4759, 4451, 4583, 4987, 4582, 4986, 5209, 4916, 5820, 5821, 5838, and models 5870 through 5887. Specialty models GN410HSB, GH530HSB, GH990HSB, GH990PORT, and GV990 are also supported.

Brand: TONYCO
Part Number: 070185ES
Product Type: Oil Filter Replacement
Unit Count: 1 Filter
Material: Aluminum
Outside Diameter: 9 centimeters
Weight: 0.27 kg
Filtration Efficiency: 99 percent
Warranty: 1 Year
UPC: 726852886301
Fit Type: Universal Fit

Key Performance Features: High-performance filtration media, leak-proof construction, enhanced dirt-holding capacity, factory-like fit for direct installation, manufactured to OE standards.

The powmx 5-pack of Generac 070185ES oil filters is a bulk replacement solution designed for owners of Generac home standby generators (8kW-24kW models from 2008 onward) and portable generators in the GT, GP, XG, and XP series. This product targets both off-grid homeowners who perform monthly maintenance and regular users seeking to stock reliable replacement parts at a better price point.

These filters stand out as genuine OEM Generac components, not counterfeit look-alikes that flood the market. Customers consistently highlight this authenticity as a key differentiator, noting that real Generac branding and packaging provide confidence in engine protection. The stainless steel construction with M16 x 1.5 threading effectively traps harmful particles, maintaining engine efficiency while extending generator lifespan across 760cc and 990cc engine configurations.

Build quality reflects OEM standards with original Generac packaging and consistent performance across the 5-filter set. The bulk format eliminates the hassle of frequent reordering while maintaining cost efficiency. Compatibility spans over 20 portable generator models and most air-cooled standby units, though buyers must verify their specific model number before purchasing.

The primary consideration is that this product serves a niche market of Generac owners rather than universal generator users. The 5-pack may represent overkill for casual users with annual maintenance schedules, though serious operators and off-grid residents will appreciate the convenience and value. The 90-day warranty provides baseline protection, though customer reviews suggest reliability rarely triggers warranty claims.

These genuine Generac filters deliver authentic OEM quality at a competitive bulk price, making them the smart choice for committed Generac generator owners who prioritize engine protection and maintenance reliability over seeking the cheapest alternative.

This 5-pack of 070185ES filters is engineered for specific Generac generator models and engine sizes. Verify compatibility before purchasing by checking your generator's model number against the manufacturer's compatibility list.

Home Standby Generators: Compatible with 8kW through 24kW models manufactured from 2008 to present. These filters work on most air-cooled standby units but not liquid-cooled models.

Portable Generator Series: Fits GT, GP, XG, and XP series portable generators. Specific compatible models include 0044510, 0044511, 0045821, 0045822, 0045823, 0045830, 0045831, 0049860, 0049870, 0049871, 0049872, 0052090, 0053080, 0053081, 0053960, 0057340, 0057350, 0057351, 0058020, 0058021, 0058022, 0059320, 0059321, 0059322, 0045820, and 0057341.

Engine Compatibility: Works with select 760cc and most 990cc Generac engines. The M16 x 1.5 thread size is specific to these configurations and will not fit other thread sizes.

When in doubt, contact Generac customer service with your generator's serial number to confirm compatibility before ordering.

Proper oil filter maintenance extends generator lifespan and ensures reliable performance during critical power outages. Replace filters according to your generator's usage pattern and manufacturer recommendations.

Off-Grid and Frequent Users: Change oil and filter every month or every 50 operating hours, whichever comes first. The 5-pack quantity supports this aggressive maintenance schedule for year-round readiness.

Regular Maintenance Users: Replace filters every 100-150 operating hours or annually for generators used seasonally. A single 5-pack will last multiple years under typical residential use.

Storage Considerations: Keep filters in a cool, dry location away from extreme temperatures and moisture. The stainless steel construction resists corrosion, but proper storage extends shelf life and maintains filter integrity.

Installation: Always drain old oil before installing a new filter. Apply a thin layer of fresh oil to the rubber gasket before threading on the new filter by hand. Avoid over-tightening, which can damage the gasket and cause leaks.

The Podafu 070185ES oil filter 12-pack is an excellent maintenance solution for Generac generator owners who need reliable, cost-effective filtration. This product is ideal for homeowners with backup power systems, commercial facilities with multiple generators, and service technicians managing generator fleets. The bulk packaging ensures you maintain consistent maintenance schedules without repeated reordering.

The standout feature is the extensive compatibility range, covering 25+ Generac generator models and multiple branded variants including Guardian, Centurion, Watchdog, Eaton, Honeywell, and Siemens. The filter utilizes premium cellulose, glass fiber, and synthetic fiber construction to deliver superior filtration performance. These materials work together to capture contaminants effectively while maintaining proper oil flow, protecting your generator engine from wear and extending operational life.

Build quality is solid with the M16 x 1.5 thread size providing secure installation across compatible models. The filter design is engineered to meet OEM specifications while delivering excellent value. Customers consistently praise the quality-to-price ratio, noting that performance matches expectations for a fraction of original equipment costs.

One consideration is that the filter dimensions run slightly smaller than some OEM originals, which can occasionally affect compatibility with aftermarket cold weather oil filter warmers. This is a minor issue for most users but worth verifying if you use supplemental heating systems. The one-year warranty is standard for replacement parts but offers minimal extended protection.

Overall, the Podafu 070185ES 12-pack represents outstanding value for generator maintenance. It delivers reliable filtration performance, broad compatibility, and significant savings through bulk purchasing. This is a smart choice for anyone managing Generac generator maintenance and seeking dependable, cost-effective filters.

This filter is compatible with Generac generator models including 0044510, 0044511, 0045820, 0045821, 0045822, 0045823, 0045830, 0045831, 0049860, 0049870, 0049871, 0049872, 0052090, 0053080, 0053081, 0053960, 0057340, 0057341, 0057350, 0057351, 0058020, 0058021, 0058022, 0059320, 0059321, and 0059322.

The filter is also compatible with 2008 to present Generac Guardian series air-cooled generators in the 8kW to 24kW range. It directly replaces OEM part numbers 070185, 070185E, and 070185F. The M16 x 1.5 thread size ensures proper installation across these compatible models. Always verify your specific generator model number before purchasing to ensure optimal fit and performance.

The KOONDHEEND 070185ES is a two-pack replacement oil filter designed for Generac Guardian and compatible air-cooled home standby generators ranging from 8kW to 24kW output. This product targets homeowners and businesses seeking affordable maintenance solutions that match OEM quality without premium pricing. It directly replaces the original 070185E and 070185F filters across 40+ generator models.

The standout feature is the 90MM orange stainless steel design, which offers 30% more filter capacity than standard 75MM alternatives. This enhanced capacity translates to better impurity removal, cleaner oil circulation, and improved engine efficiency over longer intervals. Real-world feedback confirms that users experience no leaks, secure fits, and reliable performance through multiple oil change cycles. The tool-free installation process means most owners can complete the swap in minutes without professional help.

Build quality reflects the premium materials used in construction. The stainless steel housing withstands the vibration and heat stress inherent to generator operation. The vibrant orange finish serves both aesthetic and practical purposes, making these filters easy to spot during maintenance routines. The robust design ensures stable performance across hot climates and demanding duty cycles.

One consideration worth noting: some users report the filter may fit slightly loose if an oil heater attachment is installed, though the core filtration function remains unaffected. This matters only for cold-climate users relying on heater accessories. For standard installations in moderate to warm climates, this presents no practical issue.

Overall, this two-pack offers exceptional value for generator owners seeking reliable maintenance parts backed by warranty protection and responsive customer service. The combination of superior filtration capacity, broad compatibility, and affordable pricing makes it a smart choice for both routine maintenance and backup stock.

This filter works with Generac, Guardian, Centurion, Bryant, Watchdog, Dayton, Siemens, and Carrier air-cooled generators in the 8kW to 24kW range. Compatible model numbers include 5501, 5502, 5503, 5504, 5505, 5506, 5518, 5520, 5522, 5523, 5524, 5525, 5348, 5395, 4389, 4673, 4758, 5280, 5240, 5247, 5241, 5242, 5248, 5281, 4456, 4390, 4675, 4666, 5011, 4670, 4759, 4451, 4583, 4987, 4582, 4986, 5209, 4916, 5820, 5821, 5838, and 5870 through 5887 series.

It also fits specialized models including GN410HSB, GH530HSB, GH990HSB, GH990PORT, and GV990. The M16 or 3/4 inch NPT thread size ensures secure installation on all compatible units. Always verify your specific generator model number before ordering to confirm compatibility with your equipment.

Installation requires no special tools or equipment. Simply locate the existing filter, unscrew it counterclockwise by hand, and install the new 070185ES unit by hand-tightening clockwise until snug. Wear work gloves during this process to protect your hands from any residual oil. The entire process typically takes five to ten minutes.

For optimal generator performance, follow your manufacturer's recommended oil change intervals. Most home standby generators require annual oil changes, making this two-pack an economical choice that covers maintenance for two years. Store the second filter in a cool, dry location until needed. The 1-year warranty covers manufacturing defects and ensures peace of mind with every purchase.

The Cummins 1220833 Onan Quiet Diesel Oil Filter is a genuine OEM-equivalent replacement designed specifically for Onan diesel generators. This filter is ideal for generator owners who maintain their own equipment and demand factory-quality performance without paying premium prices.

The standout feature is its reliability in preventing oil leakage, with customers consistently reporting clean installations and trouble-free operation. The filter uses a proven combination of paper and steel construction that delivers superior filtration across multiple Onan generator models, including 6000W and 7500W units. Real-world users praise the easy changeout process and solid performance value for the price.

Build quality reflects Cummins manufacturing standards with a sturdy 3/4-16 NC thread design that ensures secure installation. The filter is slightly larger than some original equipment but maintains perfect compatibility with specified Onan generator models. Each unit is individually tested to meet performance standards before shipment.

The only consideration is that this filter is vehicle-specific for Onan generators, so compatibility should be verified for your particular model number before purchase. Some users noted the size difference from their previous filters, though this did not affect performance or fitment.

This is a top-rated choice for generator owners seeking dependable OEM-quality filtration. With consistent 5-star reviews praising zero leakage and easy installation, the Cummins 1220833 delivers excellent value and reliability for routine generator maintenance.

This Cummins oil filter is engineered for specific Onan generator models. Confirmed compatible models include the HDKAJ specifications A through K, HDKAJ specification L, and KDKBA specifications A through E. Popular compatible units include the Onan 6000W and 7500W generators commonly found in RVs and standby power applications.

The 3/4-16 NC thread size is standard across these models, ensuring proper fitment and leak-free operation. Always verify your generator's model number and specification level before ordering to ensure compatibility. Consult your generator's manual or contact the manufacturer if you are unsure of your equipment's specifications.

The Generac 5W-20 Full Synthetic Oil Change Bundle is a thoughtfully packaged maintenance solution designed for Generac equipment owners who value convenience and quality. This kit brings together all essential components needed for a complete oil change, making it ideal for both seasoned DIY maintainers and first-time users tackling equipment service on their own.

The standout feature is the inclusion of genuine OEM components, including Generac's full synthetic 5W-20 oil and the 070185E OEM filter. Full synthetic formulations provide superior engine protection, better viscosity stability across temperature ranges, and extended drain intervals compared to conventional oils. The 5W-20 specification ensures optimal performance in the intended equipment class while meeting SAE J300 standards for reliable operation.

Practical design shines through the bundled accessories: the oil funnel streamlines both oil addition and drainage tasks, while the absorbent pad prevents messy spills on floors and work surfaces. These additions transform an otherwise messy maintenance job into a cleaner, more organized process. The 2-quart capacity covers standard service intervals, though larger equipment may require additional oil for a complete change.

One consideration is that the bundle's all-in-one approach offers less flexibility if you need only specific components. Additionally, the 5W-20 viscosity grade requires verification against your equipment's maintenance manual to ensure proper specification compliance. For equipment requiring different grades, you would need to purchase alternative products.

Overall, this bundle delivers genuine value through quality OEM components, practical accessories, and the convenience of one-stop shopping for routine maintenance. The strong customer satisfaction rating validates its reliability and performance for intended applications.

Oil Type: Full Synthetic

Viscosity Grade: SAE 5W-20

Oil Volume: 2 Quarts

Oil Filter Model: 070185E (OEM)

Additional Components: Oil funnel, absorbent pad

Container Type: Bottle

Vehicle Service Type: RM (Recreational Maintenance)

Viscosity Level: Low

Brand: Generac

Total Items in Bundle: 4

Who Should Buy This Bundle? Generac equipment owners performing routine maintenance, including owners of generators, pressure washers, lawn equipment, and other small engine products. This bundle suits both experienced maintainers and those new to DIY equipment service.

Before You Buy: Verify your equipment's maintenance manual specifies 5W-20 as the correct oil viscosity grade. Different Generac products may require different specifications. Check that your equipment uses the 070185E filter model for compatibility.

Maintenance Frequency: Full synthetic oils typically allow extended drain intervals. Consult your equipment manual for specific service intervals, which may range from 50 to 250 hours depending on equipment type and usage conditions.

Storage Tips: Store oil in a cool, dry location away from direct sunlight. Keep the absorbent pad and funnel in an accessible location for your next scheduled maintenance. Ensure the oil cap remains tightly sealed to prevent contamination.

This 10-pack of powmx 070185ES oil filters is purpose-built for Generac generator owners who demand reliable, bulk-purchased maintenance supplies. Ideal for homeowners with standby generators, contractors managing multiple portable units, or facilities requiring consistent equipment uptime, this product eliminates the hassle of frequent reordering.

The standout feature is genuine Generac 070185E compatibility spanning 8kW-24kW home standby generators from 2008 onward, plus GT, GP, XG, and XP series portable generators. The stainless steel construction resists corrosion during storage, while the effective filtration media captures harmful particles that degrade engine performance. Users report perfect fitment and consistent results across multiple generator models.

Build quality reflects Generac's OEM specifications with durable stainless steel housing and reliable particle-trapping media. The 10-pack format is compact enough for storage in a garage or equipment room while providing years of maintenance coverage without reordering.

The primary consideration is that the 10-pack quantity suits multi-unit operators or frequent users better than single-generator households. Storage space for bulk inventory is minimal but should be factored into your maintenance planning.

For Generac generator owners seeking dependable, cost-effective maintenance supplies with proven compatibility and performance, this 10-pack filter set delivers exceptional value and peace of mind.

Home Standby Generators: All 8kW-24kW air-cooled models manufactured from 2008 to present, including select 760cc and most 990cc engines.

Portable Generator Series: GT, GP, XG, and XP series models including 0044510, 0044511, 0045821, 0045822, 0045823, 0045830, 0045831, 0049860, 0049870, 0049871, 0049872, 0052090, 0053080, 0053081, 0053960, 0057340, 0057350, 0057351, 0058020, 0058021, 0058022, 0059320, 0059321, 0059322, and 0045820.

Engine Types: Compatible with select 760cc engines and most 990cc engines found in Generac portable and standby generator models.

The Cummins Onan 122-0836 is a genuine OEM oil filter designed specifically for Cummins Onan generators, including the popular Marquis Gold/RV QG and Marquis Platinum QG EFI models. This filter is ideal for generator owners who demand authentic parts and refuse to compromise on equipment maintenance quality.

The standout feature of this filter is its precision engineering for Onan generators. Unlike universal aftermarket filters, the 122-0836 maintains the correct length and thread specifications (M16 x 1.5) that work seamlessly with your generator's air seal gasket system. The integrated bypass valve allows oil to circulate during cold starts and prevents filter collapse under pressure, protecting your engine during demanding conditions.

Build quality reflects Cummins' reputation for durability. The gold and platinum-grade materials provide superior filtration while the OEM design ensures compatibility with the generator's mounting system. Users report consistent performance across multiple oil changes, with the filter functioning exactly as the manufacturer intended.

One consideration is that this filter requires a specific removal tool (65mm x 14 wrench cup) on some generators due to limited clearance. Additionally, the OEM pricing is higher than universal alternatives, though experienced generator owners consistently report that genuine parts justify the investment through reliable performance and equipment protection.

The Cummins Onan 122-0836 is the right choice for conscientious generator owners who understand that proper maintenance with genuine parts extends equipment life and prevents costly repairs. With over 2,700 positive reviews, this filter delivers the reliability and fitment accuracy that matters most for generator maintenance.

This OEM filter is specifically engineered for Cummins Onan generator models. Compatible units include the HGJAC, HGJAB, and HGJAA series across all specification levels (A through K). The Marquis Gold/RV QG and Marquis Platinum QG EFI generator lines are primary applications.

The M16 x 1.5 thread size is critical for proper fitment. Universal filters with different thread sizes may physically fit but compromise the seal integrity and can damage the air gasket system. Always verify your generator's thread specifications before ordering replacement filters.

Package dimensions of 6.858 cm L x 16.002 cm H x 7.112 cm W (approximately 3 x 5 x 5 inches) ensure the filter sits at the correct height relative to the air seal gasket. This precision fitment prevents stress on the gasket and allows tool-free removal without excessive force.