Ever wonder why 2008–2021 STI models never came with gearbox dipsticks from the factory? While 2001–2007 STIs had them, Subaru eliminated the dipstick for the 2008+ generations. Checking your fluid level by removing the side leveling plug is messy and impractical.
We have engineered the perfect solution. Modern STI gearboxs feature a threaded hex fill plug in the exact location where the older models housed their dipstick tube. Our conversion kit utilizes this factory port. This upgrade is essential for both stock and heavily modified cars to prevent low fluid levels, premature component wear, and costly gearbox failure.