Feature
●Melling Oil Pump High Pressure Fit Gen III & IV 4.8 5.35.7 6.0 6.2 LS1 LS6 LS2 LS3
●High pressure performance upgrade for 689-M295 OE replacement oil pump. Stock volume, 10% increase in pressure over M295 oil pump. The cast aluminum housing is CNC-machined and hardcoat anodized. The cast iron cover is CNC-machined and phosphate coated. The relief valve features a screw-in valve plug with the optional lower stock pressure spring supplied.
●The factory LS oil pump suffers from cavitation above 6,200 RPM, which results in a drop in oil flow of nearly 1 GPM by 7,000 RPM. This cavitation can also aerate the oil, which causes drops in oil pressure and can result in oil starvation. This is why we do not recommend shifting any higher than 6,200 RPM with a stock engine.
●Engines that run at RPMs above 6,200 should use an upgraded Melling pump to prevent these issues. This higher maximum pressure can also help negate drops in oil pressure caused by the addition of an oil cooler setup. This oil pump is compatible with 4.8L and 6.0L Vortec iron block engines featuring Variable Valve Timing (VVT). This oil pump should NOT be used with engines that feature Active Fuel Management (AFM) or Displacement on Demand (DoD).
●Engines with AFM/DoD require a higher flow pump. See Melling p/n 689-10355 for AFM/DoD engines.
Description
Precision Engineered. Precision Built!
Made in the USA!
Melling Oil Pumps are made right here in the United States of America to ensure the best quality products done right!
Melling: The Leader in Oil Pumps!
Melling is the leader in oil pump engineering, prototyping, and production!
Quality Tested! Quality Assured!
Every Melling Oil Pump is individually tested for pressure and flow under conditions designed to duplicate actual engine operating conditions.
Choose from a variety of Melling Oil Pumps
 M295 Oil Pump |  M355 Oil Pump |  10295 Oil Pump |  10296 Oil Pump |  10355HV Oil Pump |  M295HV Oil Pump |  M365 Oil Pump | |
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Customer Reviews
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Price
| $135.00 | $155.00 | $164.99 | $164.99 | $179.00 | $169.99 | — |
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Made in the USA!
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Pressure
| Stock Pressure | Stock Pressure | High Pressure | High Pressure | High Pressure | High Pressure | Stock Pressure |
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Volume
| Stock Volume | Stock Volume | Stock Volume | High Volume | High Volume | High Volume | Stock Volume |
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Fitment
| 4.8L 5.3L 5.7L 6.0L 6.2L | Gen IV LS with AFM DOD | 4.8L 5.3L 5.7L 6.0L 6.2L | 4.8L 5.3L 5.7L 6.0L 6.2L | Gen IV 5.3L 6.0L 6.2L | 4.8L 5.3L 5.7L 6.0L 6.2L | 5.3L 6.0L 6.2L |
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OEM Replacement vs Performance
| Stock Replacement | Stock Replacement | Performance Pump | Performance Pump | Performance Pump | Performance Pump | Stock Replacement |