GM 4L80 Stock Spline Automatic Transmission 300M Input Shaft [34670-01] Speedmaster high-volume water pumps have

Speedmaster high-volume water pumps have a ribbed aluminum housing and a heavy-duty ball/roller bearing assembly

Speedmaster ribbed aluminum valve covers feature a classic raised

Providing performance and style with its polarized lens reducing glare reflections from mirrors

Speedmaster chrome

Ensure that you have the finest distributor cap available by using one of these Speedmaster distributor caps

GM 4L80 Stock Spline Automatic Transmission 300M Input Shaft [34670-01] Speedmaster high-volume water pumps haveHigh horsepower and hard launches can cause tremendous stresses on the internal transmission components. Speedmaster automatic transmission input shafts can withstand the stresses and the added power.