FITMENT
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2020-2026 Chevrolet Silverado & GMC Sierra 2500 HD 3500 HD
OEM Cross-Reference
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PF26, PF26F, 12684038, 19419485, WL10454
DESCRIPTION
Product Overview
- Engineered for heavy-duty Duramax diesel engines, this high-performance engine oil filter provides uncompromised lubrication protection under extreme operating conditions. Built with high-density synthetic blend filtration media, it stops up to 99% of microscopic metal wear particles, carbon soot, and contaminants before they can reach sensitive crankshaft bearings, cylinder walls, and turbocharger shafts.
- Encased in a heavy-duty, rust-resistant steel canister, this filter maintains structural integrity against extreme oil pressure surges and thermal cycling. An advanced heat-resistant rubber sealing gasket prevents pressurized oil leaks under continuous high-RPM loads and heavy towing, ensuring reliable lubrication and long-term engine durability.
Key Features
- High-density synthetic blend filtration media provides exceptional contaminant holding capacity, maintaining oil flow and protecting engines using premium synthetic oils.
- 99% capture rate on abrasive metal particles and carbon soot protects tight engine bearing clearances from premature wear and oil consumption.
- Corrosion-resistant exterior coating prevents surface rust caused by winter road salt spray, road moisture, and undercarriage debris.
- High-grade heat-resistant sealing gasket maintains consistent compression across extreme temperature ranges to prevent cold-start leaks and pressure seepage.
- Factory-matched bypass valve opens at the exact pressure differential to safeguard against oil starvation while preventing unfiltered oil from circulating during normal operation.
Replacement Interval
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Replace the engine oil filter at every oil change—typically every 7,500 miles when using full synthetic diesel engine oil under normal driving conditions. For severe-duty operation, such as frequent heavy towing, extended idling, or off-road driving in dusty environments, reduce the replacement interval to 5,000 miles.
FAQ
Q: Will this PF26 filter fit older Duramax diesel models that previously used the PF2232 filter?
A: No. The PF26 features different mounting flange dimensions and thread specifications compared to the older PF2232. It will not thread onto earlier engine mounting studs, and attempting to force it will cause severe thread damage.
Q: What is the correct procedure for installing this oil filter to ensure a proper seal?
A: Clean the mounting surface and apply a thin film of fresh engine oil to the filter’s rubber gasket. Hand-thread the filter onto the mounting stud until the gasket makes solid contact with the flange, then tighten an additional 3/4 to 1 full turn by hand. Do not use a filter wrench to tighten during installation.
Q: How does the internal bypass valve in this filter protect my engine?
A: The internal bypass valve is precision-calibrated to open only during extreme pressure differentials, such as severe cold-weather starts. This ensures continuous lubrication while preventing unfiltered oil from circulating during normal driving or sustained high-RPM heavy towing.
Q: Will this filter work with the newer 2024+ L5P revisions?
A: Yes. GM has not changed the oil filter specification for the later L5P model years. This PF26 replacement fits all 2020–2025 2500 HD and 3500 HD Duramax applications.
Q: Pair this with fuel and air filters for a complete 2020+ service?
A: The 2020-2026 Fuel & Oil Combo covers the two critical fluid filters. To include engine and cabin air, grab the Air, Cabin & Oil Kit.
2020-2025 6.6L Duramax L5P Filter Kit Buyer’s Guide
