STM Throttle Body Shaft Seals for DSM/Evo/3S Add Throttle Body Gasket:Add 91-94 1G DSM Gaskets (1) Vibrant -12AN 45° Swivel

(1) Vibrant -12AN 45° Swivel Fitting (21412)

From the driver seat

All parts are sold separately as needed

Through the use of additional pressure plates (shims) and periodic rebuilds

STM Throttle Body Shaft Seals for DSM/Evo/3S Add Throttle Body Gasket:Add 91-94 1G DSM Gaskets (1) Vibrant -12AN 45° SwivelWhen these seals wear out, they can cause leaks, sticking, and jamming of the throttle plate. We tested a car on our dyno at STM with leaky seals and when the seals were replaced, we picked up 20 whp and 20 ft pounds! Nasty boost leak! Sold as the pair of seals and OEM throttle body gaskets are available in the purchase menu. Vehicle Fitment: 1991 1994 1G DSM 1995 1999 2G DSM Evolution VIII IX 1991 1999 3000GT & Stealth * Does NOT fit 1990 DSM *