Pumps

Oil pumps

Oil pumps that draw the oil from the pan and push it under pressure through the filter to the bearings, the valvetrain, the chain tensioner and the VVT adjusters: gear, gerotor and vane pumps made to the delivery and the fitting of the original, for European and Japanese passenger cars, identified by OE reference.

MONTTRON oil pump: a cast aluminium oil pump with its sprocket drive, its pressure relief valve housing and the mounting flange

The oil pump keeps the engine alive. Driven by the crankshaft, by a chain or by a shaft, it draws oil from the pan through the pick-up strainer and pushes it through the filter into the main gallery, from which it reaches the crankshaft and camshaft bearings, the tappets, the timing chain tensioner and the VVT adjusters, and cools the pistons on engines with oil jets. A relief valve limits the pressure when the oil is cold and thick. Most pumps are gear or gerotor pumps; many modern engines use a variable-displacement vane pump that saves fuel by pumping only what the engine needs.

Pumps wear and starve. The rotors and the housing wear with the miles and with dirty oil, so the pump delivers less and the pressure drops when the oil is hot and thin: the warning light flickers at idle, the tappets tick and the bearings start to wear. A pick-up strainer blocked by sludge from missed oil changes starves a healthy pump. A relief valve stuck open drops the pressure; stuck closed, it blows the filter seal. A variable pump whose control valve sticks holds the wrong pressure.

MONTTRON oil pumps are made to OEM-compliant quality and as aftermarket spare parts: the delivery, the relief pressure, the drive and the mounting flange of the original, so the pump fits the original block, pick-up and drive, and keeps the vital fluids circulating for engine cooling and lubrication. The materials are tested for durability and temperature resistance.

The range covers European and Japanese passenger cars. Each reference is identified by the OE number of the original part; send that number and the vehicle identification number (VIN) and we confirm the matching MONTTRON reference.

For availability and OE cross-references, contact us by email.

Frequently asked questions

What does the oil pressure warning light mean?
That the pressure in the main gallery has dropped below the sensor's threshold. The engine is stopped at once and the oil level checked; if the level is right, the cause is a worn pump, a blocked pick-up strainer, a stuck relief valve or worn bearings, and the engine is not run again until a workshop has measured the pressure with a gauge.
When is the oil pump replaced?
When the measured pressure is low with the engine hot at idle and the level and grade of the oil are right, when the pump is noisy, and on many engines as a matter of course when the timing chain is renewed, because the pump is driven by that chain and sits behind the same cover.

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