Extremely important on E36 Euro and S54 engines!

The factory oil cooler (found stock on E36 Euro M3 and S54 engines, also a common upgrade for track and forced induction cars using an oil cooler) have a thermostat that closes off the cooler path until the engine is up to temperature, then runs only a portion of the oil flow through the cooler once warm.

Our Oil Cooler Diverter Valve quickly remedies this issue by making the cooler full-flow – or diverting all oil through the cooler for maximum cooling effect. This will typically bring down stubborn oil temperatures 30+ degrees on tracked engines using the stock cooler configuration.

Install in just 5 minutes (once housing is removed) into the factory oil filter housing with oil cooler fittings. Not recommended for street cars without the addition of a performance inline thermostat.

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