This synchronizer upgrade kit, made by PAI, bundles the core wear components of a manual transmission synchro system into one package. It includes a low range hub, main drive gear, synchronizer assembly and sub-assembly, two housings, three support sleeves, and a synchronizer clutch with two sets of discs, along with the screws, clamps, pins, and spring sleeves needed to complete the build. Sourcing these pieces together helps restore clash-free gear engagement without hunting down each part separately.
Features
Low range hub included
Main drive gear included
Synchronizer assembly and sub-assembly included
Two housings and three support sleeves included
Synchronizer clutch and two sets of synchronizer discs included
Screws, clamps, pins, and spring sleeves included for a complete build
Tech Specs
- Kit contents:
- Low Range Hub (84KC411)
- Main Drive Gear (751KB4175)
- Synchronizer Assembly (320KB464)
- Synchronizer Sub-Assembly
- Housing x2 (53KC486E)
- Synchronizer Support Sleeve x3 (301KC243C)
- Screw x3 (6AX1606X)
- Clamp x3 (298KB213)
- Clamp x3 (298KB214)
- Synchronizer Pin x3 (301KC33)
- Synchronizer Pin x3 (301KC34)
- Spring Sleeve x3 (107KD247)
- Spring Sleeve x3 (301KC35)
- Synchronizer Clutch (21636360)
- Synchronizer Disc x8 (495KB361)
- Synchronizer Disc x8 (495KB367)
Used in these Mack model
