James Gaskets Inc Cylinder Head Gaskets with Firering Big Twin 1966-1984
Engineered for reliable combustion sealing, these cylinder head gaskets feature a durable metallic firering armor around the bore to withstand high temperatures and intense cylinder pressures. Constructed with stainless steel firering armor specifically for head gasket applications, they ensure superior strength and long-lasting performance for vintage Shovelhead powerplants.
These gaskets have a 1.1 mm starting thickness and achieve a precise 1.1 mm final crush for optimal fitment and compression maintenance. Designed as a direct replacement for OEM 16770-66A, this pair delivers dependable sealing integrity manufactured to exacting standards in the USA.
Key Features
| Brand | James Gaskets Inc |
| Product Type | Cylinder Head Gaskets |
| Replaces OEM # | 16770-66A |
| Sold as | Pair |
| Starting Thickness | 1.1 mm |
| Final Crush | 1.1 mm |
| Firering Material | Stainless Steel Armor / Grommet around Bore |
| Country of Origin | USA |
Highlights
- Replaces OEM part number 16770-66A
- Features stainless steel firering armor around the bore for optimal combustion sealing
- Starting thickness of 1.1 mm with a 1.1 mm final crush
- Sold as a pair
- Made in the USA
Compatibility
Compatible with Harley-Davidson Big Twin models from 1966 to 1984 equipped with Shovel engines.
Frequently asked questions
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