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*Minimum order of $299 to use Sezzle
Are you assembling a brand-new engine? Need to repair a broken or deteriorated head gasket? Or are you concerned about the price of a blown head gasket? Sierra provides budget-friendly and high-performance cylinder head gaskets to meet your needs. Sierra Head gasket 18-3861. Head gasket replacements for Mercury and Mariner outboards. Between the cylinder head and engine block lies the head gasket. A head gasket seals the engine block and cylinder head, preventing leaks and pressure loss. Keep your engine in good shape with premium head gaskets from Sierra.
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For: Mercury 135, 150, and XR4