Melling Performance M155HV - Factory style GM High-Volume Oil Pump

Description

Made in the USA to the highest production standards, Melling high-volume replacement oil pumps provide dependable performance and enhanced fluid delivery every time in every application. Engineered as an upgraded displacement solution over standard factory pumps, these units supply extra oil volume to support high-mileage engines, remote oil coolers, auxiliary filtration systems, and performance builds with wider bearing clearances. Each pump utilizes the latest gear and gerotor technology to deliver optimal lubrication and pressure stability across all engine speeds. Internal gears are CNC-machined to close tolerances to maintain precise oil pressure and ensure efficient operation, while precision-ground end plates offer maximum resistance against scoring, cavitation, and friction wear. To ensure complete peace of mind and true out-of-the-box reliability, every Melling oil pump is individually bench-tested for flow and pressure under conditions specifically designed to duplicate actual engine running environments.

Features & Technical Highlights:

• Increased Oil Flow Volume: Supplies extra oil volume displacement over factory units to maintain strong, steady oil pressure at idle and under high engine temperatures.
• Ideal for Demanding & High-Mileage Applications: Compensates for normal engine wear in higher-mileage applications and provides necessary supplemental volume for external oil lines, coolers, and performance clearances.
• Precision Gear & Gerotor Engineering: Internal components are machined to exacting tolerances to minimize parasitic drag, prevent internal bypass leakage, and deliver smooth, consistent oil circulation.
• Precision-Ground Wear Surfaces: End plates are ground to tight dimensional tolerances to resist scoring, prevent rotor galling, and maximize pump longevity.
• 100% Factory Dynamometer Tested: Each unit is individually flow- and pressure-tested under simulated operating conditions to verify correct relief valve and pressure performance before leaving the factory.
• High-Quality Construction: Manufactured from premium-grade materials meeting or exceeding original equipment specifications.
• Made in the USA: Engineered and assembled domestically under strict quality control standards for dependable engine protection.