What is the primary function of this head gasket?

This head gasket seals the combustion chambers, preventing compression leaks, and also seals the coolant and oil passages between the cylinder head and the engine block. This ensures proper engine operation and prevents fluid contamination.

What does the bore size and thickness mean for my engine?

The 3.336-inch bore is specific to the M20 B25/B27 engine, ensuring it aligns correctly with the cylinders. The .079-inch thickness is also a critical dimension for achieving the correct compression ratio and sealing force when the cylinder head is torqued down.

Does this head gasket come with any installation hardware?

This product is for the head gasket itself. It is recommended to check the manufacturer's specifications or consult with a professional to determine if new head bolts or other associated hardware are required for your specific engine rebuild.

JE Pistons Head Gasket B25/B27 3.336in Bore .079in BM1007-07

Name: JE Piston Pro Seal BMW M20 Series B25/B27 3.336in Bore .079in Thickness Head Gasket
Brand: JE Pistons
SKU: je-pistons-je-piston-pro-seal-bmw-m20-series-b25-b27-3-336in-bore-079in-thicknes-t14-97568
Price: 518.92 USD
Availability: BackOrder

JE Piston Pro Seal BMW M20 Series B25/B27 3.336in Bore .079in Thickness Head Gasket

$518.92

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

JE Pistons Pro Seal head gasket for BMW M20 B25/B27 engines. 3.336in bore, .079in thickness.

Key Features

Fits BMW M20 Series B25/B27 engines.
Features a 3.336-inch bore size.
Has a thickness of .079 inches.
Designed for reliable sealing of combustion chambers and coolant passages.
Built with durable materials to withstand engine operating conditions.
Aims for a strong and consistent seal between the cylinder head and block.

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Product Details

If you're rebuilding the top end of your BMW M20 B25 or B27 engine, a solid head gasket is crucial for sealing the combustion chamber and coolant passages. This Pro Seal head gasket from JE Pistons is built to handle the demands of these classic inline-six engines, ensuring a reliable seal between your cylinder head and engine block. It's designed with a 3.336-inch bore and a .079-inch thickness, which are specific dimensions to match the M20 engine's requirements.

JE Pistons is well-known for its performance engine components, and this head gasket is no exception. It's constructed from durable materials designed to withstand the high temperatures and pressures found in an internal combustion engine. The Pro Seal design aims for a strong, consistent seal, which is vital for preventing compression leaks and coolant contamination. This gasket is a direct replacement for the original, meaning it fits right into place without needing modifications, simplifying the installation process for your engine rebuild.

When undertaking a significant engine job like a head gasket replacement, it's important to ensure all mating surfaces are perfectly clean and flat. This gasket is intended to be used with the original cylinder head and block specifications. Always refer to the manufacturer's installation instructions for proper torque sequences and any specific preparation steps required for your BMW M20 engine.