The coolant pressure inside the engine block can reach 70+psi at high rpm before the thermostat fully opens. This will cause a corroded frost plug to leak. The BD rear frost plug is able to be seal the leak without the need to hammer out the old frost plug.

We recommend installing the rear frost plug plate when the Tranmission is removed. The plate can be installed with the Tranmission in place, however the surface finish on the back of the motor is critical and must be checked prior to use.

Warranty:

Parts

• 12-Months

Emissions:

This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement Parts included. (EMS:4)

Features:

• Works with the frost plug in place, blown out, or leaking
• No need to punch the old frost plug out
• Utilizes one large 333 O-ring
• Works with and without a TCC crossover tube
• Perfect time to install one is when the Tranmission is removed!