BCBC M365HV-395S Engine Oil Pump

Engine Oil Pump Overview

This Melling engine oil pump, part number M365HV-395S, is a high-volume rotary pump built for applications that need consistent oil pressure and efficient circulation. It is made in the USA and uses gear and gerotor technology for dependable engine lubrication.

Key Features

• High-volume design with 20% additional volume over stock
• Rotary oil pump construction with standard pressure output
• Aluminum housing and cover with rust-preventative finish
• Powdered metal rotor and precision-ground end plates
• Includes gasket or seal, O-ring, pickup screen, and pump cover
• Individually tested for pressure and flow under engine-like conditions

Detailed Description

The M365HV-395S is engineered for direct engine lubrication service in compatible GM truck and SUV applications, including Cadillac Escalade, Chevrolet Silverado 1500, and GMC Sierra 1500 models. Its improved-design, high-volume output helps maintain oil delivery where a stock-style pump is not enough, while close-tolerance machining supports efficient operation and proper engine pressure. This part number, M365HV-395S, is built with aluminum components, a powdered metal rotor, and a crankshaft drive type for a durable replacement solution. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Is Used For

• Restoring oil pressure in a worn or inefficient lubrication system
• Addressing low oil flow caused by pump wear or internal clearance issues
• Supporting engines that require higher oil volume than stock output
• Replacing a pump with damaged gears, rotor, or cover surfaces
• Improving lubrication consistency during normal engine operation

Installation Notes and Tips

Verify engine application and fitment before installation, since this oil pump is listed for specific 2007-2014 Cadillac, Chevrolet, and GMC applications. Confirm the pickup tube diameter, mounting hole pattern, and drive type match the engine configuration. The pump includes a gasket or seal, O-ring, pickup screen, and pump cover, but no bolts or drive shaft are included. Follow factory service procedures for priming, torque values, and oil system inspection during installation.

Quality Assurance

Melling manufactures this oil pump in the USA and tests each unit for pressure and flow to verify operation under conditions that simulate real engine use. Precision machining, improved-design construction, and production standards support consistent performance in service.