BCBC M251 Engine Oil Pump

Engine Oil Pump Overview

This Melling engine oil pump is a standard replacement part built for dependable oil pressure and efficient operation. It uses gear and gerotor technology, close-tolerance machining, and precision-ground end plates to support consistent performance in demanding engine applications.

Fits 1994-2003 Dodge Ram 2500, N/A. Fits 1994-2003 Dodge Ram 3500, N/A. Fits 1989-1993 Dodge D250, N/A. Fits 1989-1993 Dodge D350, N/A. Fits 1989-1993 Dodge W250, N/A. Fits 1989-1993 Dodge W350, N/A.

Key Features

• Standard replacement oil pump for engine lubrication service
• Cast iron housing and cover for durable construction
• Spur gear design with powdered metal rotor material
• Rust preventative finish for added surface protection
• Individually tested for pressure and flow under operating conditions

Detailed Description

Part number M251 is a Melling oil pump made in the USA and engineered to meet high production standards. The pump is built with a cast iron housing and cover, a drive shaft design, and standard pressure, standard volume output. Close-tolerance gears and precision-ground end plates help maintain proper engine pressure and efficient pump operation. This part cross-references Monroe Shocks & Struts (e.g., 224-43633, 3926203) for the same application.

Compatible with Dodge Ram 2500 and Dodge Ram 3500 trucks from 1994-2003, as well as Dodge D250, D350, W250, and W350 models from 1989-1993. The M251 oil pump is a direct service part for stock applications where consistent lubrication performance is required.

What It Is Used For

• Low or inconsistent engine oil pressure
• Wear-related loss of pump efficiency
• Oil circulation issues in stock engine service
• Replacement of a worn gear-type oil pump

Installation Notes and Tips

Verify engine application, mounting pattern, and pump configuration before installation. This pump does not include a gasket or seal, drive shaft, pickup screen, or mounting hardware. Clean the mounting surface and inspect related engine components during service.

Quality Assurance

Melling manufactures this pump in the USA and tests each unit for pressure and flow to confirm operation under conditions that duplicate actual engine use.