Application – Ford 9″ with 31 spline axles
Description
Hoosier 31 Spline Posi Unit
A perfect replacement for worn-out OEM clutch differentials
Forged steel halves eliminate breakage common to cast units
Features
Forged Steel Case Halves
• Heat treated
• Fully machined
• Provides a light, durable, and rigid unit
Note
This is intended as a factory replacement
For high output vehicles, consider options below
Gear Lube
DO NOT USE SYNTHETIC GEAR OIL
Will adversely affect unit operation and void warranty
Use Petroleum Based 80W-90 or 85W-140 Gear Oil
Requires (1) 4 ounce bottle of limited-slip additive
Related Components
Strange clutch style…………… N1970F
Eaton Truetrac…………………… N1979
Eaton Detroit Locker………….. N1971
S-Series case……………………… N2205
Pro Iron case……………………… N1905
HD Pro Alum case kit…………. P3200
Side bearings & races….. D1586 / D1588
Alloy axle package……….. P3102 / P3104
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
