This first gear fits all NV5600 Dodge diesel 6 speed transmissions. If you have an early (2001 & older) transmission you will have to use the updated lined synchronizer ring. There is a Dodge part number on the box for reference 05019907AA. This is an aftermarket part. We have used the same supplier for over [...]

This is a cast iron tailhousing that fits a NV4500 5 speed transmission in the Dodge diesel trucks. This is much heavier that the factory aluminum piece and is a direct bolt on replacement. These have the 2 threaded holes on the side for the transfer case shifter, so they will fit all years.

This synchronizer hub fits all G56 Dodge 6 speed transmissions. These are prone to wear where they spline onto the mainshaft.

This is an aftermarket 4th gear on the mainshaft for a G56 transmission found in 2005 and newer Dodge Ram trucks with a Cummins diesel engine. his one fits trucks with either the 5.9 or 6.7 engine and has 28 teeth. The Pro-Active part number is G56-19, but we use G56-4. The original Dodge part [...]

This is a replacement reverse synchronizer hub and slider for the G56 6 speed transmission found in 2005 and newer Dodge trucks. Both pieces have a super smooth REM finish. These are from a supplier that we get many of our transmission and transfer case parts from and really like the quality and fit of [...]

This input shaft fits all Dodge NV5600 6 speed transmissions with the 1 3/8″ clutch spline. It is made for use with the updated synchronizer rings.

This is a new aftermarket mainshaft for a T56 6 speed transmission in a Camaro/Firebird application. These are the same for LT1 and LS1 applications. These were found in cars from 1993-2002. These a Pro Active abd work really well. Also they are about 1/2 price of the genuine Tremec.