Copper 3rd Member Gaskets

This is not a paper gasket.
This is hard copper insurance for rear ends that get punished.

Precision-cut from solid hard copper, these gaskets are built to seal under brutal torque, heat, and load-where cheap gaskets fold and RTV makes excuses. Whether you’re running a raised pinion 11” setup or a standard Ford 9”, this gasket keeps the fluid in and the chaos contained.

AVAILABLE OPTIONS

🔥 RAISED PINION 11” APPLICATION (Lazarus)

• Clears gears up to 11.400”

• Designed for high-power, high-load race and street abuse

🔥 STANDARD FORD 9” PATTERN

• Fits 10” gear setups

• Same hard copper construction, same no-fail seal

WHY IT HITS HARD

• Hard Copper Construction – Won’t crush, blow out

• Reusable – Torque it, run it, pull it, reuse it

• No RTV Required

• Extreme Load Capable

SPECS

• Thickness Options:

  • .030”

  • .040”

• Faceplate Stud Compatibility:

  • 3/8”

  • 7/16”

  • 12mm

• Material: Hard copper

• Applications:

  • Raised Pinion 11” rear ends

  • Standard Ford 9” pattern, 10” gear

BUILT FOR

• Drag & no-prep cars

• Radial setups

• Street cars that don’t play nice

• Anyone done cleaning gear oil off the shop floor

Seal it once. Beat on it forever.
👉 Select your application and thickness, then send it.