The Cometic C10166 M8 head gasket is engineered for select Harley-Davidson Milwaukee-Eight V-Twin applications requiring a 4.075-inch gasket bore and 0.040-inch compressed thickness. Its multi-layer steel (MLS) construction provides a dependable sealing solution for high-performance engine builds and demanding street or touring use.
Cometic Gasket continually refines its materials, manufacturing processes, and gasket designs to meet the increased performance demands of modern V-Twin engines. The C10166 head gasket is manufactured to support consistent sealing between the cylinder head and engine block when installed with the appropriate application-specific components and procedures.
Fitment includes 2018 Harley-Davidson FLHCS Softail Heritage Classic 114, FXFBS Softail Fat Bob 114, FXBRS Softail Breakout 114, and FLFBS Softail Fat Boy 114 models. It also fits select 2019 Harley-Davidson applications, including the FXDR Softail Power Cruiser, FXBRS Softail Breakout 114, FXFBS Softail Fat Bob 114, FLFBS Softail Fat Boy 114, FLHCS Softail Heritage Classic 114, and FLHXS Street Glide Special. Verify engine configuration and gasket requirements before installation. Manufacturer part number: C10166. Vendor part number: 68-10166.
Features:
- Brand: Cometic Gasket
- Manufacturer Part Number: C10166
- Vendor Part Number: 68-10166
- Application: Harley-Davidson Milwaukee-Eight V-Twin engines
- Gasket Type: Multi-layer steel (MLS) head gasket
- Gasket Bore: 4.075 inches
- Compressed Thickness: 0.040 inches
- Fitment: Select 2018 and 2019 Harley-Davidson Softail and Touring models
- Performance: Designed for reliable sealing in modern, high-performance V-Twin applications
Fitment:
2018 Harley Davidson FLFBS Softail Fat Boy 114
2018 Harley Davidson FLHCS Softail Heritage Classic 114
2018 Harley Davidson FXBRS Softail Breakout 114
2018 Harley Davidson FXFBS Softail Fat Bob 114
2019 Harley Davidson FLFBS Softail Fat Boy 114
2019 Harley Davidson FLHCS Softail Heritage Classic 114
2019 Harley Davidson FLHXS Street Glide Special
2019 Harley Davidson FLRT Freewheeler
2019 Harley Davidson FLTRXS Road Glide Special
2019 Harley Davidson FXBRS Softail Breakout 114
2019 Harley Davidson FXDR Softail Power Cruiser
2019 Harley Davidson FXFBS Softail Fat Bob 114