BCBC M365HV Engine Oil Pump

High-volume engine oil pump

This Melling engine oil pump is built for applications that need consistent oil pressure and increased flow. Part number M365HV is a high-volume rotary pump with improved design features for dependable lubrication in compatible GM and related platforms.

• High-volume design with 20% additional volume over stock
• Rotary oil pump construction with crankshaft drive
• Aluminum housing and cover with stainless steel rotor
• Precision-machined gears and ground end plates for efficient operation
• Individually tested for pressure and flow under engine-like conditions
• Gasket or seal included; O-ring included

Detailed application and design

M365HV is engineered for direct engine oiling performance in a wide range of Chevrolet, GMC, Cadillac, Buick, Pontiac, Saab, Hummer, and Isuzu applications. The pump uses gear and gerotor technology, close-tolerance machining, and a standard-pressure calibration to support stable oil delivery. Its aluminum construction, rust-preventative finish, and precision-ground wear surfaces reflect the Melling focus on controlled operation and durability. This part number, M365HV, is commonly selected for GM truck, SUV, and performance car fitments where a high-volume oil pump is specified.

What this part helps address

• Low oil pressure caused by a worn or inefficient pump
• Inconsistent oil delivery during engine operation
• Reduced lubrication performance in high-demand applications
• Wear related to aging pump gears, rotors, or end plates
• Oil system service needs on compatible GM V8 and related engines

Installation notes and tips

Verify engine code, oiling system configuration, and fitment notes before installation. This pump uses a crankshaft drive and a four-hole mounting pattern, so matching the existing engine setup is important. Confirm pickup tube and screen dimensions, and inspect the sealing surfaces during installation. M365HV is listed for multiple Chevrolet Silverado 1500, GMC Sierra 1500, and Chevrolet Camaro applications, so application-specific verification is recommended before ordering.

Quality assurance

Melling manufactures this oil pump in the USA and tests each unit for pressure and flow under conditions that duplicate actual engine operating conditions. The M365HV part number is built to Melling production standards using quality materials and precision machining. This part cross-references Sealed Power 224-43711HV for the same application.