For the 2021 Ridgeline with the 3.5-liter V6, you should use a standard spin-on oil filter designed for Honda’s J35 engine. The OEM Honda filter part numbers most commonly cited for this engine are 15400-PLM-A01 or 15400-PLM-A02; compatible aftermarket filters from reputable brands can also be used if they match the same threading and gasket specs.
The Ridgeline’s maintenance guide calls for synthetic 0W-20 oil, and the filter should be replaced at each oil change. Honda typically recommends changing the oil every 7,500 miles under normal driving conditions, with shorter intervals for severe duty or extreme temperatures. Always verify the exact interval for your vehicle in the owner’s manual or with a dealer, as maintenance schedules can vary by model year and driving climate.
Identifying the right filter for your Ridgeline
To ensure you get the correct filter, you can check several reliable sources. Start with the vehicle’s VIN, the current filter on the engine, or the owner’s manual; you can also contact Honda customer service or your local dealer for the exact part number and cross-reference.
- OEM Honda Genuine filter aligned to the 3.5L V6 engine (typically 15400-PLM-A01 or 15400-PLM-A02, depending on production date)
- Aftermarket spin-on filters from reputable brands that specify compatibility with the Honda 3.5L V6 and the same thread size and gasket diameter
- Ensure the filter is a true spin-on type (not a cartridge) and that it is rated for use with 0W-20 synthetic oil
When choosing between OEM and aftermarket options, prioritize fit and filtration quality. The key compatibility factors are the thread size, gasket diameter, mounting type, and overall filtration efficiency. If you’re unsure, ask the parts counter or consult the vendor’s cross-reference tool.
Where to buy and how to verify compatibility
Verifying compatibility is straightforward but essential. Use the Ridgeline’s VIN in Honda’s official parts lookup or consult a dealer; compare the part number on the old filter with the recommended list for the 3.5L V6; or rely on well-reviewed cross-reference guides from trusted auto parts retailers.
- Honda dealership parts desk can confirm the exact filter number for your VIN
- REPUTABLE aftermarket catalogs will show cross-references for 3.5L Honda V6 filters
Note that some older carry-over filters used during earlier Ridgeline generations may look similar but are not interchangeable. Always double-check the part number before purchasing.
Maintenance tips for replacing the oil filter
Proper installation practices help ensure long filter life and leak-free operation. Follow these best practices:
- Park on a level surface and use proper tools to remove and hand-tighten the filter to the recommended torque
- Lubricate the new filter’s gasket with clean engine oil before installation
- Replace the oil drain plug gasket if it’s part of the service; don’t reuse old gaskets
- Dispose of the old filter and oil per local regulations
After installing a new filter, add the recommended amount of oil and recheck for leaks after starting the engine and running for a minute. Recheck oil level and top off if necessary.
Summary
In short, the 2021 Honda Ridgeline uses a standard spin-on oil filter designed for the 3.5-liter V6. Opt for Honda Genuine 15400-PLM-A01 or -A02, or choose a reputable aftermarket filter that matches the same thread, gasket, and filtration specs. Pair with 0W-20 synthetic oil and follow Honda’s maintenance schedule for oil changes. Always verify the exact part number for your VIN to ensure a perfect fit.