The typical tool size you’ll need is 24 millimeters, i.e., a 24-mm oil filter cap wrench or a 24-mm socket that fits the cap on the filter housing.
The Lexus IS250 uses a cartridge-style oil filter housed in a cap at the engine, and servicing it usually requires a 24-mm tool to loosen and remove the cap. This size is common on many Toyota/Lexus 2.5L engines, but always verify for your exact year and engine code to avoid using an incorrect tool.
Tool size and how to identify it
The IS250’s oil filter housing is designed for a 24-mm tool to engage the cap and relieve the filter cartridge. If your wrench or socket doesn’t fit snugly, double-check that you’re using the correct 24-mm size and that you’re on the proper cap pattern for your model year.
When you perform the service, ensure the engine is cool, the car is on a level surface, and you have a drain pan ready to catch any oil that may spill when you loosen the cap.
Tool options and how to use them
Common options to fit the 24-mm size include a dedicated 24-mm oil filter cap wrench, a 24-mm deep socket used with a ratchet, or a universal cap-tool kit that lists 24 mm as one of its sizes. Make sure the tool engages the cap’s flats or recessed pattern securely to avoid rounding corners.
Apply steady, perpendicular force to loosen the cap, then remove the cap by hand and replace the oil filter cartridge as directed by the service manual. Reinstall the cap and torque to the specified value, then check for leaks after running the engine briefly.
Notes on model-year variations
While 24 mm is the standard for most IS250 cars, variations in some model years or regions can occur. If you encounter a different pattern on your cap, consult the owner’s manual or a service manual for your exact year and engine code (2GR-FSE) to confirm the correct size and procedure.
Summary
For the Lexus IS250, you’ll typically use a 24-mm oil filter tool (cap wrench or equivalent socket) to service the oil filter housing. Always verify with your specific year and engine code and follow the vehicle’s service manual for torque specifications and O-ring replacement to ensure a proper seal and leak-free operation.