The 2018 Chevrolet Silverado uses a standard spin-on oil filter, but the exact part number depends on the engine under the hood (4.3L V6, 5.3L V8, 6.2L V8, or 3.0L Duramax diesel).
In practice, all gasoline Silverado engines from that year use a traditional spin-on canister filter that screws onto the engine with a common thread, while the Duramax diesel in some configurations uses a cartridge-style filter housed in a canister. When you shop for a replacement, confirm the engine code or VIN to select the correct part number, and you can choose OEM parts from AC Delco or reputable aftermarket brands such as Bosch, Mahle, or Mobil 1.
Engine options and filter types
The Silverado lineup in 2018 offered several engines, each with its own filter configuration. The following guidance applies to the gasoline engines, with a note on the diesel option.
- 4.3L V6
- 5.3L V8
- 6.2L V8
- 3.0L Duramax turbo-diesel
Regardless of the engine, the replacement process is straightforward: verify the correct application for your engine, obtain the appropriate filter, and replace the old unit during an oil change. If you own a Duramax diesel, expect a cartridge-style filter in a canister rather than a traditional spin-on, which may require a different replacement approach.
Choosing the right filter
Before buying, use a quick checklist to ensure compatibility and proper fitment.
- Identify your engine by checking the VIN or the engine code under the hood or in your owner's manual.
- Confirm the filter design (gasoline engines typically use a spin-on canister; some diesel versions use a cartridge in a housing).
- Choose a high-quality filter from OEM or reputable aftermarket brands that lists compatibility with the 2018 Silverado engines.
- Check the thread size and gasket diameter to ensure a proper seal and easy installation.
After selecting the correct filter, consult your vehicle’s service manual or follow the included installation instructions. It’s also common practice to replace the drain bolt washer and add fresh oil to ensure a proper seal and oil pressure after installation.
Summary
For a 2018 Silverado, you’re generally looking at a standard spin-on oil filter for gasoline engines, with the exact part number varying by engine (4.3L V6, 5.3L V8, or 6.2L V8). The Duramax diesel may use a cartridge-style filter. Always verify your engine code or VIN to pick the correct filter and consider OEM AC Delco or a trusted aftermarket brand for reliable performance.