QU40421 Knuckle Seal for 12 Bolt Steering Knuckles spindles-1971-1977-bronco-dana-44-front TM4637 Front Axle Tech Manual

TM4637 Front Axle Tech Manual for Ford Excursion and 1999-2004 Super Duty (19 pages)

Other common causes of seal failure are installation errors

CALL Not Used Not Used Tailshaft Bushing Remover and Installer Not Used Not Used Not Used QT2044 Not Used Not Used TOOLS For ALL NV4500 MODELS

Early production diff output shafts use QU40173 Tapered Roller Bearing Kit and can be removed by unbolting the 3 bolt external bearing retainer flange from the diff housing

Matching Parts for GM

QU40421 Knuckle Seal for 12 Bolt Steering Knuckles spindles-1971-1977-bronco-dana-44-front TM4637 Front Axle Tech ManualQU40421 Knuckle Seal for 12 bolt steering knuckles on Dana 44HD, Dana 60, and Dana 70 Closed Knuckle front axles.