What does 'TD' mean for these head bolts?

TD stands for Torque Drive. This refers to a specific design feature of the head bolt, often related to how torque is applied or how the bolt interacts with the cylinder head and engine block. It's a common specification for many Harley-Davidson engines.

Do these bolts come with nuts or washers?

This kit includes the head bolts only. You will need to source any necessary nuts or washers separately if they are not part of your original hardware.

What is the purpose of the shoulder diameter on a head bolt?

The shoulder diameter, in this case .950 inches, helps to properly align the cylinder head and control the clamping force distribution. It ensures the head is seated correctly and helps maintain consistent pressure across the gasket surface.

S&S Cycle TD Head Bolt Kit 93-3036

Name: S&S Cycle 3/8-16 x 2.170in x .950in TD Head Bolt Kit
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-3-8-16-x-2-170in-x-950in-td-head-bolt-kit-t14-619307
Price: 22.18 USD
Availability: BackOrder

S&S Cycle 3/8-16 x 2.170in x .950in TD Head Bolt Kit

$22.18

On Backorder

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

S&S Cycle 3/8-16 x 2.170in x .950in TD Head Bolt Kit for Harley-Davidson.

Key Features

Fits a wide range of Harley-Davidson motorcycle models from 1991-2003.
Features a 3/8-16 thread size for secure cylinder head mounting.
Bolt length measures 2.170 inches with a .950 inch shoulder diameter.
Uses a TD (Torque Drive) head bolt design common in Harley-Davidson engines.
Designed as a direct replacement for original head bolts.

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Will this fit your vehicle?

Product Details

Starting with a 3/8-16 thread size and a 2.170-inch length, this TD head bolt kit from S&S Cycle is built to secure your engine's cylinder heads. These bolts are specifically designed for a range of Harley-Davidson motorcycles, ensuring a proper fit for applications like the FLHTC Electra Glide Classic, FXDL Dyna Low Rider, and XLH1200 models. When you're rebuilding the top end of your engine, using the correct hardware is crucial for proper sealing and long-term reliability.

This kit uses a TD (Torque Drive) head bolt design, which is a common specification for many Harley-Davidson engines. The precise dimensions of 2.170 inches in length and a .950-inch shoulder diameter are critical for ensuring the cylinder head is seated correctly against the engine block. Using a well-made bolt kit like this one helps maintain consistent clamping force, which is essential for preventing leaks and ensuring the engine runs smoothly.

For any top-end engine work on your Harley-Davidson, having a reliable head bolt kit is a must. This S&S Cycle kit offers a direct replacement for the original hardware, making installation straightforward when you're ready to put your engine back together.