Designed to deliver trouble-free, consistent performance Melling 10296 High Volume, High Pressure LS Oil Pump GM LS Engine Oil Pump MELLING 10295 LS1 LS2 LS3 SELECT OIL PUMP STANDARD VOLUME HI PRESSURE Performance Holden Commodore LS Aftermarket Oil Pump Low Volume For Performance Aftermarket LS Engine Blocks with Priority Main Oiling Without Variable Valve Timing and Displacement on Demand Standard steel rotors Includes optional high pressure spring (not installed) Uses 7/8 bolt-on screen Includes oil pump and oil pump screen mounting O-Rings -15% Lower volume than stock High pressure Cast aluminum... Exact fitment and original ************************************************************* Melling GM LS High Pressure/Volume Oil Pump 10355 Priority Main Oiling without Variable Valve Timing and Displacement on Demand.