Sienna | 2016-2020 | LE, SE, STD, XLE | 6 Cyl 3.5L
Tacoma | 2015-2022 | Limited, SR5 | 6 Cyl 3.5L
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About Toyota Cylinder Head Gasket
The head gasket is a mechanical seal that sits between the engine block and cylinder head in an engine. Its job is to seal the cylinders to ensure maximum compression and prevent coolant and engine oil from leaking into the cylinders. This makes the Toyota head gasket the most important sealing component in the engine, so making sure it functions properly is critical for the health of the car.