Colony Machine Stock Head Bolts Chrome 8221-20 for Pan & Shovel 1948-1984

Colony Machine Stock Head Bolts Chrome 8221-20 for Pan & Shovel Shovelhead Panhead 1948-1984

$179.63
Skip to product information
Colony Machine Stock Head Bolts Chrome 8221-20 for Pan & Shovel 1948-1984

Colony Machine Stock Head Bolts Chrome 8221-20 for Pan & Shovel Shovelhead Panhead 1948-1984

$179.63

Upgrade or rebuild your vintage motorcycle engine with Colony Machine Stock Head Bolts and Washers. Precision-machined from high-strength steel, these OEM-style fasteners are hardened to original equipment manufacturer specifications to effectively prevent stretching under high compression.

Featuring rolled threads for superior strength and a precision fit, these chrome-finished head bolts provide both long-lasting durability and a clean, classic appearance. Proudly made in the USA, they directly replace OEM part # 16814-77 for seamless engine restoration.

Key Features

Brand Colony Machine
Manufacturer Part Number (MPN) 8221-20
Product Type Cylinder Head Bolts & Washers
Finish Chrome
Material Hardened High-Strength Steel
Thread Type Rolled Threads
Replaces OEM Part Number 16814-77
Country of Origin USA
Weight 0.9 kg

Highlights

  • OEM style chrome finish head bolts and matching washers
  • Machined from durable, high-strength steel
  • Hardened to OEM specifications to resist stretching under pressure
  • Rolled threads offer enhanced strength and fitment
  • Direct replacement for OEM # 16814-77
  • Made in the USA

Compatibility

Fits Panhead and Shovelhead engines from 1948 through 1984. Replaces OEM # 16814-77.

What's included

  • Stock Head Bolts
  • Matching Washers

Frequently asked questions

What models and years are these head bolts compatible with?

These head bolts fit Panhead and Shovelhead motorcycle engines manufactured between 1948 and 1984.

What OEM part number does this kit replace?

This hardware set directly replaces OEM part # 16814-77.

What material and heat treatment are used for these bolts?

The bolts are machined from high-strength steel and hardened to original OEM specifications to prevent stretching under load.

Where are these head bolts manufactured?

These bolts are made in the USA by Colony Machine.

You may also like