What material is this base gasket made from?

This base gasket is made from graphite. Graphite is a good material for engine gaskets because it can handle high temperatures and pressures effectively, helping to maintain a reliable seal.

Why does this gasket kit come with two units?

The kit includes two gaskets so you have a spare on hand for future maintenance or if you need to replace them on more than one motorcycle. It offers good value for your engine work.

What is the significance of the .018 inch thickness?

The .018 inch thickness is a specific measurement designed to work with the stock engine configuration for the compatible Harley-Davidson models. Using the correct thickness is important for proper cylinder alignment and sealing.

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Trusted Since 1957

Est. 1957

S&S Cycle 99-17 BT .018in 4-1/8in Base Gasket - 2 Pack

Specifications

Brand: S&S Cycle
Part #: 930-0101
UPC: 930-0101

S&S Cycle 99-17 BT .018in 4-1/8in Base Gasket - 2 Pack

Name: S&S Cycle 99-17 BT .018in 4-1/8in Base Gasket - 2 Pack
Brand: S&S Cycle
Price: 26.21 USD
Availability: InStock

$26.21

On Backorder — Expected to ship by May 7, 2026

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

S&S Cycle .018in 4-1/8in base gasket kit for 1999-2016 Big Twin models. Graphite material.

Key Features

Fits 1999-2016 Harley-Davidson Big Twin models.
Gasket measures .018 inches thick and 4-1/8 inches in diameter.
Constructed from graphite for good heat and pressure resistance.
Comes as a 2-pack, providing two gaskets per purchase.
Designed to ensure a proper seal between engine cases and cylinders.

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Will this fit your vehicle?

Product Details

Starting with a .018 inch thickness, this S&S Cycle base gasket is made from graphite, a material known for its ability to handle heat and pressure well. This gasket is designed to fit a range of Harley-Davidson Big Twin engines from 1999 through 2016, including popular models like the Street Glide and Heritage Softail. It's a key component for ensuring a solid seal between your engine cases and cylinders.

This gasket kit comes with two units, so you have a spare or can tackle multiple bikes if needed. The 4-1/8 inch diameter is specific to the engine configuration it's designed for, ensuring a proper fit when you're rebuilding or repairing your engine. Proper sealing is crucial for maintaining compression and preventing oil leaks, and these gaskets are well-built to do just that.