The 4Runner uses a cartridge-style oil filter that sits on top of the engine
Unlike many vehicles with a spin-on filter that screws onto the side of the engine, Toyota 4Runners have a cartridge filter housed in a plastic or metal canister on the valve cover. The filter element itself is a pleated paper cylinder that you pull straight out and replace — you do not unscrew anything from the engine block itself. This design is common across Toyota trucks and SUVs, and once you know where to look, it is straightforward to change.
The location and exact appearance vary slightly depending on your 4Runner's year and engine size, but the basic process is the same across generations. Knowing which filter your specific model needs before you start saves a trip back to the parts store.
Key Takeaways
- 4Runners use a cartridge-style filter in a canister on top of the engine, not a spin-on filter screwed to the side.
- The filter element is a paper cylinder you pull straight out; you replace only the element, not the entire canister.
- Filter part numbers differ by engine size and model year, so confirm yours before purchasing.
- You will need an oil filter wrench to unscrew the canister cap, a drain pan, and a new filter element plus a replacement rubber gasket.
Where the oil filter canister sits on your 4Runner
On most 4Runners, the filter canister is mounted vertically on top of the engine, toward the back of the valve cover. On 4th generation models (2010 and newer), it is usually on the driver's side of the engine bay. On earlier generations, the location can vary — some have it on the passenger side or more toward the center. The canister is a cylindrical housing, typically black plastic or aluminum, about 3 to 4 inches tall.
To find it on your specific model, open the hood and look for a large cylindrical cap with a wrench size printed on top (usually 86mm or 90mm). That cap is what you grip with an oil filter wrench to remove the canister. If you cannot locate it visually, your owner's manual will show the exact spot with a diagram.
Oil filter part numbers for different 4Runner models
Toyota uses different filter elements depending on your engine and year. The most common part numbers are:
- 90915-10001 — used in many 4Runners with the 3.4L V6 (1996–2002) and some 4.7L models
- 90915-10003 — common in 4th generation 4Runners (2010–2021) with the 4.0L V6
- 90915-20001 — used in some 3.0L diesel and earlier 2.7L models
- 90915-10004 — found in certain 5th generation 4Runners (2022 and newer)
The easiest way to confirm which filter your 4Runner needs is to check your owner's manual or call a Toyota dealer with your vehicle identification number (VIN). You can also look at the old filter element if you have one — the part number is printed on the paper. Many auto parts stores can also look it up if you give them your year, make, and model.
Tools and supplies you will need
Before you start, gather these items so you do not have to stop midway:
- An oil filter wrench sized for your canister cap (usually 86mm or 90mm) — this is a socket-style wrench that grips the cap from above
- A drain pan to catch oil that drips when you open the canister
- The correct replacement filter element for your model year
- A replacement rubber gasket (O-ring) — this comes with most filter kits, but confirm before you buy
- A rag or paper towels
- A socket wrench or breaker bar to turn the filter wrench if the cap is very tight
You do not need to drain the engine oil to change the filter — the canister is designed to minimize spillage. However, have the drain pan ready because some oil will come out when you remove the cap.
Step-by-step filter replacement
Step 1: Prepare the engine. Let the engine cool for at least 10 minutes after running, or work on a cold engine. This prevents burns from hot oil. Position your drain pan under the filter canister on top of the engine.
Step 2: Remove the canister cap. Place the oil filter wrench over the cap on top of the canister. Turn counterclockwise to loosen it. If it is very tight, use a socket wrench or breaker bar on the filter wrench for extra leverage. Once loose, unscrew it by hand and set it aside. Some oil will drip into the pan — this is normal.
Step 3: Remove the old filter element. Reach into the canister and pull the paper filter element straight up and out. It should come free easily. If it is stuck, wiggle it gently side to side. Discard the old element and the rubber gasket that was on the bottom of the canister.
Step 4: Clean the canister. Wipe the inside of the canister with a clean rag to remove any debris or old gasket material. Pay special attention to the sealing surface where the new gasket will sit.
Step 5: Install the new gasket and filter. Place the new rubber gasket on the bottom of the new filter element. Slide the filter element into the canister, pushing it down until it seats fully. The gasket should make contact with the bottom of the canister.
Step 6: Reinstall the cap. Screw the canister cap back on by hand until the gasket contacts the cap, then turn an additional three-quarters of a turn with the filter wrench. Do not over-tighten — this can damage the gasket and make removal difficult next time.
Step 7: Check your work. Start the engine and let it run for 30 seconds, then turn it off. Wait a minute and check under the canister for leaks. If you see oil dripping, the cap may not be tight enough or the gasket may not be seated correctly. Tighten slightly and recheck.
Common mistakes to avoid
The most frequent error is forgetting to replace the rubber gasket. If you reuse the old gasket, it will not seal properly and oil will leak. Always install a new gasket with every filter change — it is inexpensive and prevents headaches.
Another mistake is over-tightening the cap. The gasket only needs to be compressed enough to seal; tightening beyond that can crack the canister or damage the gasket. Hand-tight plus three-quarters of a turn with the wrench is the standard specification for most Toyota filters.
Some people also forget to check the oil level after the filter change. Changing the filter does not drain the oil pan, but it is still good practice to verify your oil level on the dipstick a few minutes after the change to make sure everything is working correctly.
Frequently Asked Questions
Do I need to drain the engine oil to change the filter?
No. The cartridge filter canister is designed to minimize oil spillage when you remove the cap. You will lose a small amount of oil (usually less than a quart), but you do not need to drain the entire pan. Have a drain pan ready to catch what does spill, and check your oil level afterward.
What size wrench do I need for the filter cap?
Most 4Runner filter caps are either 86mm or 90mm. The size is usually printed on the top of the cap itself. If you cannot read it, call a Toyota dealer with your VIN or check your owner's manual. Using the wrong size wrench can strip the cap.
Can I use an aftermarket filter instead of a Toyota filter?
Yes, many aftermarket filters fit 4Runners and meet the same performance standards. Fram, Bosch, and Mobil all make compatible cartridge filters. Confirm the part number matches your engine size and year before purchasing. Toyota filters are often slightly more expensive but are may provide to fit.
How often should I change the filter?
Toyota recommends changing the oil filter every time you change the engine oil. For most 4Runners, that is every 5,000 to 10,000 miles, depending on your driving conditions and the type of oil you use. Check your owner's manual for the exact interval for your model year.
What should I do with the old filter element?
The paper filter element can go in your regular trash or recycling bin. The rubber gasket should also go in the trash. Some auto parts stores will take old filters for recycling if you ask, but it is not required. Do not pour any oil that dripped into the pan down the drain — dispose of it at a recycling center or auto parts store that accepts used oil.