GM 12 Blt Truck 3.73 Standard Gear Set – Thick Richmond Gear – Produced in Italy Rear End Upgrades 438″ – A1027

438″ – A1027

Part Number: U1663

Part Number: B4135WC2

• Choice of Low Profile or Standard fill plug *

For supercharger specs on the F-1X-12 and F-3R-121 superchargers

GM 12 Blt Truck 3.73 Standard Gear Set – Thick Richmond Gear – Produced in Italy Rear End Upgrades 438″ – A1027Part Number: RS01888373TX Standard Gears are the perfect choice for replacement of OEM gear sets Providing long service life in Street, Street Track, & Oval track vehicles These gears can also be used in some Drag Race cars depending on weight & power If tooth breakage occurs, then Pro Gears or a larger rear end will become necessary Special Design For 2. 56 to 2. 73 Carriers Thick ring gear eliminates need to purchase higher series carrier Will Not