One limitation of the R-series transmission is its first gear thrust washer. The factory thrust washer fails under heavy loading due to a narrow cross-section with a square lock-pin keyway. Marlin Crawler has developed a new thrust washer that features a larger cross-section with a rounded lock-pin keyway. To top it off, it's made from heat treated & vacuum arc remelted (VAR) chromoly steel. New hardened pin included!
We recommend this thrust washer for those who are pushing 300+ ft-lbs of torque through their R-series transmission, which covers any lightly modded 87-92 Supra turbo 5 speed.
Applications include R150, R150F, R151, R151F, R154, and other R-series transmissions.
New updated design now with increased cross-section & surface areas!