BCBC MPE-120BR Engine Expansion Plug Kit

Engine expansion plug kit

This Melling engine expansion plug kit is built for engine rebuilds that require both expansion/freeze plugs and pipe plugs. Made in the USA, it provides a standard replacement solution for domestic and import applications where brass water jacket plugs are preferred.

• Brass construction for corrosion-resistant service in the cooling system
• Press-fit and screw-in attachment types for listed engine applications
• Standard replacement grade for rebuild and service work
• Includes the plug types needed to complete the job for the listed application

Application details

Compatible with Cadillac engine rebuild applications across the listed model years, including Cadillac DeVille, Cadillac Fleetwood, Cadillac Commercial Chassis, Cadillac Eldorado, Cadillac Seville, and Cadillac Calais. Fits 1968-1984 Cadillac models, N/A, with coverage that spans multiple engine service configurations. Part number MPE-120BR is a practical choice when replacing worn or missing block plugs during a rebuild.

Melling’s Stock line focuses on convenient coverage for engine service parts, helping reduce time spent sourcing individual plugs. This part cross-references Pioneer Automotive Industries (e.g., PE-120-BR) for the same application.

Common uses

• Replacing corroded or leaking freeze plugs during an engine rebuild
• Restoring cooling-system sealing at the cylinder block
• Completing a rebuild when the original plugs are missing or damaged
• Matching brass plug preference for service or replacement work

Installation notes

Verify the engine’s plug style and size before installation, since this kit includes both press-fit and screw-in plug types. Clean the block bores and threaded passages thoroughly so the plugs seat correctly. Confirm application details against the vehicle’s engine code and service requirements before assembly.

Quality assurance

Made in the USA. Melling supplies engine service components for rebuild applications, and part number MPE-120BR is offered as a standard replacement kit for the listed fitments.