BCBC MPE-120R Engine Expansion Plug Kit

Engine expansion plug kit for stock rebuilds

Melling MPE-120R is a standard replacement engine expansion plug kit for select Cadillac applications. It is built for engine rebuild work where both expansion/freeze plugs and pipe plugs are needed to complete assembly.

• Steel construction for common water jacket plug service
• Press-fit and screw-in attachment types in one kit
• Standard replacement grade for rebuild and repair work
• Made in the USA

Coverage and application details

This Melling expansion plug kit is organized for domestic and import engine applications and is intended to simplify parts selection during engine assembly. The MPE-120R part number is listed for Cadillac Commercial Chassis, Fleetwood, DeVille, Eldorado, Seville, and Calais applications across the 1968-1984 model years. This part cross-references Monroe Shocks & Struts (e.g., 97-5, 557-021) for the same application.

What this kit helps address

• Missing or corroded engine expansion plugs
• Worn pipe plugs needed during engine rebuilds
• Time spent sourcing individual plug sizes separately
• Incomplete sealing components during block assembly

Installation notes and quality

Verify the engine application before installation and match the plug style to the block requirements. The MPE-120R includes steel expansion/freeze plugs and the pipe plugs required for the listed application, helping streamline engine assembly. Melling supplies this kit as a convenient rebuild solution for the specified Cadillac coverage.

Quality assurance

Melling manufactures this kit in the USA and supplies it as a standard replacement component for engine rebuild use.