• Much thicker than the stock cover, for increased strength. Stock covers are a well-known weakness of the Cobra IRS. This cover provides increased strength without the need for an additional brace.
• Reduces the possibility of cover breakage or oil leaks.
• May be installed with stock rubber mounts and direct replacement urethane mounts.
• Load bolts provide additional support for the differential bearing main caps.
• Separate ports for draining, filling, and checking the level make servicing much easier.
• Includes provisions for oil cooler inlet and outlet.
• Easily drilled and tapped for a temperature sensor.
• Machined groove on mounting surface captures silicon to form a better seal.

• Direct replacement FRPP design fits like an OE part should.
• Thick, high-strength aluminum casting provides far greater strength than the breakage-prone stock cover.
• Load bolts.
• 10 attachment bolts and washers.
• Machined groove on sealing surface.

• 1999-2004 Mustang Cobra IRS
• Stock rubber differential mounts
• Direct replacement urethane differential mounts

• MM aluminum differential mounts that lower the differential cover
• Any differential mounts that lower the differential cover relative to the cradle

Why does the stock differential cover break?
The primary cause of cover breakage is the impact loads during wheel hop. The stock rubber bushings allow the center section to flop around violently, which can easily break the thin stock cover. Aluminum differential bushings prevent movement of the center section, greatly reducing the possibility o cover breakage. A stronger cover such as the FRPP cover is an added layer of insurance against cover breakage.