The 2021 Silverado 1500 uses different oil filters depending on the engine: the gasoline V8 options (5.3L and 6.2L) use spin-on oil filters, commonly AC Delco PF63, while the 3.0L Duramax turbodiesel uses a cartridge-style oil filter element from GM Genuine Parts.
Understanding which filter your Silverado requires starts with identifying your engine option. Below is a practical breakdown by engine type, plus tips on verifying the correct part for your VIN.
Gasoline engines: 5.3L and 6.2L EcoTec3
These gasoline engines generally use a standard spin-on oil filter. The GM-preferred filter for these applications is the AC Delco unit PF63, with many aftermarket filters matching the same size and thread. Use the filter that is listed for your specific engine code and production date.
- 5.3L EcoTec3 V8 — Spin-on oil filter. Common GM/ACDelco replacement: PF63 (or equivalent aftermarket filter that matches the correct size and thread).
- 6.2L EcoTec3 V8 — Spin-on oil filter. Common GM/ACDelco replacement: PF63 (or equivalent).
Whether you have the 5.3L or the 6.2L, using the PF63 filter from GM/ACDelco is a widely supported choice. Always confirm with your VIN-based parts lookup to avoid mismatches.
Diesel option: 3.0L Duramax Turbo Diesel
The Duramax diesel uses a cartridge-style oil filter rather than a traditional spin-on canister. GM Genuine Parts offers the official oil filter element designed for the Duramax, and your service kit or dealer can supply the exact cartridge compatible with your truck's VIN and engine code.
- 3.0L Duramax Turbo Diesel — Cartridge-style oil filter element. Use GM Genuine Parts oil filter cartridge/element that is specified for the Duramax; rely on GM Parts Lookup or your dealer for the precise part number.
In Duramax-equipped Silverados, the filter is replaced by swapping the cartridge in the housing during service, not by unscrewing a spin-on canister. Always verify the exact filter element with your VIN to ensure fit and filtration performance.
Practical tips for finding the right filter
To ensure you buy the correct part, check the owner's manual, GM's official parts catalog, or use a reputable auto parts retailer's lookup tool with your VIN. The catalog will list the exact filter part number for your engine code and production date.
What to do if you’re unsure
If you’re unsure which engine your Silverado has or which filter to use, contact a Chevrolet dealer or use GM's Parts Lookup tool with your VIN. They can confirm the correct oil filter type and part number for your vehicle configuration.
Summary
In brief: For 2021 Chevy Silverado 1500 models, oil filter choice depends on the engine: 5.3L and 6.2L gasoline engines use spin-on oil filters (GM/ACDelco PF63 is commonly used), while the 3.0L Duramax turbodiesel uses a cartridge-style oil filter element. Always verify the exact part through VIN-based lookup or with a dealer to ensure proper fit.