C10166-HB-030 Head & base gasket kit MLS 4.075"
incl. VAT
Chapter members save 15% · Sign in for member pricing
Estimated delivery: 3–15 working days
Authorised
Iron City Dealer
14-Day Returns
Easy & hassle-free
Secure Checkout
256-bit encryption
Free UK Delivery
On orders over £100
Specifications
- Brand
- Cometic
- Part Number
- C10166-HB-030
- OEM Reference
- —
- Pack Quantity
- Sold as pr
- Category
- Derby Covers Seal Kits
- VAT Rate
- 20%
About This Product
This Cometic head and base gasket kit is specifically engineered for the larger 117 and 121-cubic inch Milwaukee-Eight engines. Featuring a 4.075-inch bore, the kit includes .030-inch Multi-Layer Steel (MLS) head gaskets and .020-inch Rubber Coated Steel (RCS) base gaskets to provide a professional-grade seal. Sold as a pair to service one engine, these gaskets are designed for 2022 to 2025 models equipped with the high-output 117 or 121-inch powerplants. The MLS construction is the gold standard for performance builds, offering exceptional durability and resistance to thermal expansion. Whether you are doing a top-end refresh or a performance build, these Cometic gaskets provide the reliability required for Harley's largest displacement factory engines.
Manufacturer part number: C10166-HB-030.
Fitment
34 models22-25 M8. With 117/121" engines
Police 2 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2017–2018 | Electra Glide Standard Police FLHTP |
| Harley-Davidson | 2017–2018 | Road King Police FLHP |
Softail 12 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2018–2019 | Breakout FXBR |
| Harley-Davidson | 2018–2020 | Deluxe FLDE |
| Harley-Davidson | 2018–2020 | Fat Bob FXFB |
| Harley-Davidson | 2018–2020 | Fat Boy FLFB |
| Harley-Davidson | 2018–2021 | Heritage Classic FLHC |
| Harley-Davidson | 2018–2020 | Low Rider FXLR |
| Harley-Davidson | 2018–2021 | Slim FLSL |
| Harley-Davidson | 2019–2020 | Softail Slim FLSL |
| Harley-Davidson | 2020–2024 | Softail Standard FXST |
| Harley-Davidson | 2018–2024 | Sport Glide FLSB |
| Harley-Davidson | 2021 | Street Bob 114 FXBBS |
| Harley-Davidson | 2018–2020 | Street Bob FXBB |
Touring 17 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2019–2022 | Electra Glide Standard FLHT |
| Harley-Davidson | 2017–2019 | Electra Glide Ultra Classic FLHTCU |
| Harley-Davidson | 2017–2023 | Road Glide FLTRX |
| Harley-Davidson | 2017–2018 | Road Glide Special FLTRXS |
| Harley-Davidson | 2017–2018 | Road Glide Ultra FLTRU |
| Harley-Davidson | 2017–2019 | Road King Classic FLHRC |
| Harley-Davidson | 2017–2022 | Road King FLHR |
| Harley-Davidson | 2017–2018 | Road King Special FLHRXS |
| Harley-Davidson | 2018 | Street Glide Anniversary FLHX |
| Harley-Davidson | 2017–2023 | Street Glide FLHX |
| Harley-Davidson | 2018 | Street Glide Special Anniversary FLHXS |
| Harley-Davidson | 2017–2018 | Street Glide Special FLHXS |
| Harley-Davidson | 2018 | Ultra Limited Anniversary FLHTK |
| Harley-Davidson | 2017–2018 | Ultra Limited FLHTK |
| Harley-Davidson | 2017–2018 | Ultra Limited Low FLHTKL |
| Harley-Davidson | 2018 | Ultra Limited Shrine Edition FLHTK |
| Harley-Davidson | 2017 | Ultra Limited Shrine FLHTK |
Trike 3 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2017–2018 | Freewheeler FLRT |
| Harley-Davidson | 2018 | Tri Glide Ultra Anniversary FLHTCUTG |
| Harley-Davidson | 2017–2018 | Tri Glide Ultra FLHTCUTG |
Related Products
View all →More from Cometic
View all →Who are we? Leeds Harley-Davidson - Iron City Motorcycles
This product is fulfilled by Iron City Motorcycles, Leeds' authorised Harley-Davidson® dealer, serving the UK with a full range of Genuine Motorclothes®, dealer merchandise, and official Harley-Davidson parts & accessories — available for UK and international delivery.
From OEM Parts to retro lifestyle wear to aftermarket stockits we have what you need to keep you riding all year round.
Use our official OEM parts finder to browse our full Genuine Harley-Davidson® Parts and our associated approved aftermarket catalogues.