Fumoto

The best oil drain valve for a Subaru is the Fumoto valve that matches your engine's thread size: M16-1.5 valves such as the F108 series for many FA-engine and BRZ/86 applications, and M20-1.5 valves such as the F105 series for most EJ-engine models. This collection covers both, plus long and short nipple versions and the LC-10 lever clip, so check your year and model and confirm your thread size before ordering.

A drain valve replaces the factory drain plug and stays in the oil pan. At oil-change time you open the lever and the oil drains in a controlled stream instead of dropping a plug into a hot drain pan, making changes cleaner and quicker. Short nipple versions keep clearance tidy, long nipple versions make attaching a drain hose easier, and the lever clip adds a simple safeguard against accidental opening.

Brands in This Collection

Fumoto is the only brand here, and the range shows how specific a simple part has to be. The F108S with short nipple and LC-10 clip covers applications including the 15-25 WRX, 13-16 FR-S, 13-20 BRZ, 17-19 Toyota 86, 14-18 Forester, and 10-13 Legacy in M16-1.5. The F105S covers most EJ-series and Subaru 3.0 and 3.6R engines in M20x1.5, and there are also an M10-1.25 valve for Infiniti and Nissan applications, a universal 1/2 NPT valve, and a valve and oil filter combo for 15-2020 FA WRX models. Thread size, not brand loyalty, is the deciding factor.

Oil changes pair naturally with the wider oil system range, where pans, pickups, and coolers address capacity and oil control on modified engines. Killer B Motorsport is the Subaru specialist in that space, known here for oil pickups and pans built for EJ and FA engines. Mishimoto covers the cooling and oil-cooler side of the same maintenance-and-protection picture for street and track cars.

For the oil itself, Motul is the fluids range most Subaru owners in this catalog reach for, with engine oils aimed at turbocharged applications. Finish the service plan with our WRX winterizing guide, which covers seasonal maintenance checks beyond the oil change itself.

Frequently Asked Questions

How do I know which thread size my Subaru needs?

Match the valve to your engine family: many FA and BRZ/86 applications here use M16-1.5, while most EJ applications use M20-1.5. Check your year and model on the listing, because guessing the thread size will not work.

Will a drain valve leak or open while driving?

The valve is spring-loaded and locks closed, and the LC-10 lever clip included with many versions adds a physical safeguard over the lever. Install it correctly, confirm it is fully closed and clipped, and check it at the first fill.

Does the valve slow down an oil change?

The stream through a valve is narrower than an open plug hole, so draining can take a little longer, especially with cold oil. Warm the engine briefly first, as you would for any oil change, and it drains steadily.

Is installation difficult?

No: the valve threads in where the drain plug was, at your next oil change. Use a new sealing washer as directed, torque it sensibly rather than overtightening, and you are done.