Modular Differential 3" Tube with Leaf Spring Perch Late [18.5] The outer cases made from

The outer cases made from 8620 Chrome-Nickel-Moly steel and the case hardened for long life and improved strength

Speedmaster serpentine belts are designed to keep your accessory drive operating properly

Designed to fit most applications with dual bolt patterns for Borg & Beck and Long-style clutch assemblies

oil temp will run approximately 5-10 degrees cooler

The Speedmaster MidRise Air design features the identical plenum and runner design as the normal MidRise

Modular Differential 3" Tube with Leaf Spring Perch Late [18.5] The outer cases made fromUpgrade your axle system and experience improved performance and durability.