What vehicles does this S&S Cycle head bolt kit fit?

This kit is designed for 1984-2017 Harley-Davidson Big Twin models and 1986-2003 Harley-Davidson XL models, specifically when fitted with S&S heads. It's important to confirm your motorcycle's configuration.

What is the advantage of the 12-point head design?

The 12-point head on these bolts allows for a more secure socket grip and can make installation easier, especially in tight engine compartments where access might be limited with a standard 6-point socket.

Does this kit include everything needed to install S&S heads?

This kit provides eight head bolts with integrated washers, which are essential for mounting S&S heads. Always refer to the S&S Cycle installation instructions for any additional components or procedures required for your specific engine build.

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Specifications

Brand: S&S Cycle
Part #: 93-3070
UPC: 93-3070

S&S Cycle 3/8-16 x 3.384in x .950in TD S&S Heads w/ Washer Head Bolt - 8 Pack

Name: S&S Cycle 3/8-16 x 3.384in x .950in TD S&S Heads w/ Washer Head Bolt - 8 Pack
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-3-8-16-x-3-384in-x-950in-td-s-s-heads-w-washer-head-bolt-8-p-t14-619252
Price: 151.53 USD
Availability: BackOrder

$151.53

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 8-pack of 3/8-16 x 3.384in TD head bolts with washers for S&S heads. Fits many Big Twin and XL models.

Key Features

This product includes a set of 8 head bolts and washers.
Each bolt measures 3/8-16 thread size, 3.384 inches in length, and has a .950 inch TD washer head.
The bolts feature a 12-point head design for easier installation.
Designed for use with S&S heads on Big Twin and XL motorcycle engines.
Fits 1984-2017 Harley-Davidson Big Twin models and 1986-2003 Harley-Davidson XL models with S&S heads.

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Will this fit your vehicle?

About this part

Product Details

This kit gives you eight 3/8-16 x 3.384 inch TD head bolts, each with a .950 inch washer head, designed specifically for use with S&S heads. These bolts are essential for securely mounting your cylinder heads to the engine block, ensuring a proper seal and reliable performance. They are built to the correct specifications for S&S Cycle heads, which is critical for maintaining the integrity of your engine's top end.

You're getting a well-built set of eight bolts and their integrated washers, ready to go. The 12-point head design on these bolts can be helpful during installation, especially in tight spaces where a standard 6-point socket might be difficult to get on. This kit is designed for a range of Harley-Davidson Big Twin models from 1984 to 2017, as well as XL models from 1986 to 2003, provided they are equipped with S&S heads. Make sure to check the fitment details to confirm compatibility with your specific motorcycle.