BCBC M-45 Engine Oil Pump

Engine Oil Pump Overview

This Melling engine oil pump is a standard replacement for classic Chevrolet and GMC applications that require dependable oil pressure control. Part number M-45 is built with steel gears, a cast iron housing, and a cast iron cover for consistent operation in stock engine builds.

Fits 1954-1962 Chevrolet and GMC applications listed below, with stock fitment notes. This part cross-references ATP (e.g., B-45) and Sealed Power (e.g., 224-4141) for the same application.

Key Features

• Standard replacement oil pump for stock engine applications
• Steel gears and gear-type pump design for controlled oil delivery
• Cast iron housing and cover for durable construction
• Rust preventative finish for added surface protection
• Individually tested for pressure and flow before release

Detailed Description

Melling M-45 is an engine oil pump engineered for stock replacement use in a wide range of Chevrolet and GMC vehicles from the 1950s and early 1960s. The gear-style design uses machined steel gears and precision-ground end plates to help maintain proper engine pressure and efficient pump operation. The standard pressure and standard volume configuration makes it a direct choice for original-style lubrication systems in models such as the Chevrolet Bel Air, Impala, and GMC 1000 Series.

The M-45 is assembled from high-quality materials and tested under conditions that duplicate actual engine operating conditions. Its cast iron construction, drive shaft drive type, and 0.500-inch inlet size support consistent oil flow in applications that call for a stock replacement pump. For Chevrolet Bel Air, Chevrolet Impala, and related truck and passenger car applications, this pump provides a straightforward service part solution.

What It Is Used For

• Restoring proper oil pressure in a worn or failing pump
• Replacing a pump with inconsistent flow or pressure output
• Addressing low oil pressure concerns in stock engine builds
• Servicing original-style lubrication systems in classic Chevrolet and GMC vehicles

Installation Notes and Tips

Verify engine application, pump style, and inlet requirements before installation. This pump does not include a gasket or seal, and it does not include a drive shaft, pickup screen, or bolts. Confirm that the existing engine setup matches the standard pressure, standard volume, gear-type configuration before installation.

Quality Assurance

Melling manufactures this oil pump in the USA and tests each unit for pressure and flow to verify operation under simulated engine conditions. Part number M-45 is built to Melling production standards for stock replacement service.