What does Multi-Layer Steel (MLS) construction mean for my engine?

MLS head gaskets use multiple layers of steel with a special coating. This design allows them to better handle the high pressures and temperatures found in performance engines, providing a more consistent and reliable seal compared to older gasket types.

Do I need to buy these gaskets individually or as a set?

This product includes two head gaskets, which is what you'll need to seal both cylinders on your engine. You won't need to purchase a separate gasket for the other side.

What is the bore size and thickness of this gasket?

This gasket is designed for engines with a 3.875 inch cylinder bore and has a thickness of .040 inches. It's important to match these dimensions to your engine's specifications for proper fitment and performance.

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Est. 1957

Twin Power 99-17 Twin Cam Big Twin Head Gasket 3.875 Inch Bore .040 MLS Pr

Specifications

Brand: TwinPower
Part #: 043178
UPC: 887337317540

Twin Power 99-17 Twin Cam Big Twin Head Gasket 3.875 Inch Bore .040 MLS Pr

Name: Twin Power 99-17 Twin Cam Big Twin Head Gasket 3.875 Inch Bore .040 MLS Pr
Brand: TwinPower
Price: 69.62 USD
Availability: InStock

$69.62

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Twin Power head gasket for 99-17 Twin Cam Big Twin models. MLS construction ensures a solid seal.

Key Features

Fits 1999-2017 Twin Cam Big Twin Harley-Davidson models.
Multi-Layer Steel (MLS) construction for a strong, airtight seal.
Designed for a 3.875 inch cylinder bore.
Features a .040 inch thickness.
Made in USA.

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Product Details

If you're rebuilding the top end of your Twin Cam Big Twin engine, getting a solid seal between the cylinder head and the cylinder is critical. These Twin Power head gaskets are built for that job. They're made with Multi-Layer Steel (MLS) construction, which is a popular choice for its ability to handle high compression and temperature changes without deforming.

This particular gasket is designed for a 3.875 inch bore and has a thickness of .040 inches, making it suitable for a range of Twin Cam Big Twin models from 1999 through 2017. They are made in the USA, so you know you're getting a well-built part designed for reliable performance. Having a good seal here prevents combustion gases from escaping and keeps oil and coolant where they belong.