BD Diesel 1040022 Killer Frost Plug Plate 1989-2002 Dodge Cummins 5.9L

The BD Diesel Killer Frost Plug Plate is an innovative solution for addressing rear freeze plug failures on 1989-2002 Dodge 5.9L Cummins engines. Unlike traditional repairs that require hammering out the old frost plug, this plate seals directly over the existing plug—whether it's in place, leaking, or completely blown out.

Why This Upgrade Matters:

At high RPM, coolant pressure inside the engine block can exceed 70 PSI before the thermostat fully opens. This extreme pressure can cause corroded freeze plugs to fail, leading to coolant leaks. The BD Killer Frost Plug Plate provides a permanent, reliable seal using a large 333 O-ring that handles these pressure spikes without issue.

Key Features:

• Installs without removing the old frost plug—no hammering or drilling required
• Works with frost plug in place, leaking, or blown out completely
• Large 333 O-ring ensures positive seal under high pressure
• Compatible with and without TCC crossover tube configurations
• Ideal installation opportunity during transmission removal
• Can be installed with transmission in place if rear block surface is clean and smooth

Installation Notes:

While this plate can be installed with the transmission in place, BD Diesel strongly recommends installation during transmission removal for optimal results. The surface finish on the back of the engine block is critical for proper sealing and must be inspected and cleaned before installation.

Emissions Compliance:

This is a replacement part that does not require a California EO number. It is legal for sale and use in all 50 states.

Warranty: 12 months on parts.