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Tegiwa Sump baffle (BMW M3 E90/E92/E93 S65 engines)
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Tegiwa Sump baffle.
Conventional road cars typically use a wet sump system, where most of the engine oil is stored in the oil pan. While this works fine for everyday driving, track use subjects cars to higher G-forces. Under these conditions, the factory oil pickup may struggle to draw oil from the pan to the reservoir, potentially causing oil starvation and excessive wear on vital engine components.
A baffled sump helps prevent this by restricting oil movement, keeping it concentrated around the pickup to ensure consistent oil supply. The TEGIWA baffle is a simple yet effective solution to oil starvation—easy to install and immediately beneficial. If you're running grippy tires and pushing serious power through your S65, this could be the perfect upgrade for you.