This 3/8″ thick diff cover is engineered to protect your Corporate 14 Bolt axle on GM trucks under serious trail and towing use. Made from high-strength A50 plate steel and fully welded inside and out, it delivers rugged durability where it counts.
The one-piece cap is bent eight ways and welded to a matching 3/8″ ring, then CNC-machined flat to ensure a perfect seal—no leaks, no fuss. Compatible with both full-float and ribbed 14 Bolt housings; not compatible with AAM axles.
Key Features:
Part Number: R1266
Material: 3/8″ thick A50 plate steel (50,000 PSI)
Fitment: Corporate 14 Bolt axles (GM/Chevy 3/4 Ton and 1 Ton trucks)
Design: One-piece cover bent 8 ways and welded to 3/8″ ring
Surface: CNC-machined flat for leak-free sealing
Installation: Bolt-on with or without optional bolt kit
Bolt Options (sold separately): M8 x 1.25‑30 mm or 3/8″ x 1″ bolts with washers
Made in the USA
Backed by RuffStuff’s Lifetime Guarantee
This cover can be purchased with or without diff cover bolts. We offer two hardware kits depending on your axle’s bolt thread size:
M8 x 1.25 – 30mm bolts with washers: Commonly used on newer GM axles with metric threads.
3/8" x 1" bolts with washers: Typically found on older 14 bolt axles with standard threads.
