Melling Performance M452HV - High Volume Replacement Oil Pump for 5.7L and 6.4L HEMI engines

Description

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

Features & Technical Highlights:

• High-Volume Output: Supplies increased oil volume displacement over factory standard pumps to help maintain steady oil pressure at idle and under high operating temperatures.
• Engineered for Rebuilds & Worn Clearances: Compensates for normal engine wear in higher-mileage applications and provides necessary supplemental volume for external oil lines, coolers, and looser bearing clearances.
• Precision Gear & Gerotor Engineering: Machined to tight tolerances to eliminate internal bypass leakage, reduce parasitic drag, and ensure smooth, pulse-free fluid movement.
• Precision-Ground Wear Surfaces: End plates are ground to exacting tolerances to resist scoring, prevent rotor galling, and maximize overall pump longevity.
• Direct OE Replacement Fit: Bolts directly in place of factory original units without necessitating block or oil pan modifications.
• 100% Factory Bench Tested: Every unit is individually flow- and pressure-tested under realistic engine operating conditions to verify performance before packaging.
• Made in the USA: Manufactured domestically under strict quality control standards to deliver dependable long-term engine protection.