Mark Williams Differential Main Caps - Steel - Black Oxide - GM 12 Bolt 2010175 REAL SEALS provide a do-it-once

REAL SEALS provide a do-it-once solution that will not burn or blow out

Features Air Lift's Lifetime Warranty

Tough Pump 400

Available in Thin and Medium thicknesses

Mark Williams Differential Main Caps - Steel - Black Oxide - GM 12 Bolt 2010175 REAL SEALS provide a do-it-onceOne of the most common causes of rear end component failure can be traced to the stock rear end caps. To cure this problem MW makes a replacement cap from billet steel with an increased cross section and heat treated grade 8 hardware (included). Requires precision measuring of the cap bore and milling of cap parting line to install. Differential Main Caps Hardware Included Steel Black Oxide GM 12 Bolt Mark Williams Enterprises manufactures a full