C10223 EST top-end gasket kit. M8 4.250" bore
Fits: 18-24 Softail; 17-24 FLT/Touring; 1…
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Specifications
- Brand
- Cometic
- Part Number
- C10223
- OEM Reference
- —
- Pack Quantity
- Sold as kit
- Category
- Derby Covers Seal Kits
- VAT Rate
- 20%
About This Product
This Cometic EST top end gasket kit is a specialized solution for Milwaukee-Eight engines with bores up to 4.200", specifically designed for 4.250" big bore applications. The kit includes .040" Multi-Layer Steel head gaskets and .020" Single-Layer Steel base and rocker cover gaskets with a Viton coating. A unique feature of this kit is the special gasket design that allows for a true bolt-on application while keeping the oil cooling ports open on oil-cooled heads. It fits 2018 to 2024 Softail and 2017 to 2024 Touring and Trike models. This complete kit includes all necessary seals and o-rings, making it the ideal choice for mechanics performing significant big bore upgrades on both oil and water-cooled M8 models.
Manufacturer part number: C10223.
Fitment
69 models18-24 Softail; 17-24 FLT/Touring; 17-24 Trikes. With both oil cooled and water cooled heads with bores up to 4.200"
CVO/Custom 2 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2017 | CVO Limited FLHTKSE |
| Harley-Davidson | 2017 | CVO Street Glide FLHXSE |
Police 8 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2017–2020 | Electra Glide Standard Police FLHTP |
| Harley-Davidson | 2025 | Police Electra Glide FLHTP |
| Harley-Davidson | 2021–2024 | Police Electra Glide FLHTP |
| Harley-Davidson | 2025 | Police Road Glide FLTRXP |
| Harley-Davidson | 2024 | Police Road Glide FLTRXP |
| Harley-Davidson | 2025 | Police Road King FLHP |
| Harley-Davidson | 2021–2024 | Police Road King FLHP |
| Harley-Davidson | 2017–2020 | Road King Police FLHP |
Softail 27 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2018 | Breakout 114 Anniversary FXBRS |
| Harley-Davidson | 2018–2022 | Breakout 114 FXBRS |
| Harley-Davidson | 2018–2024 | Breakout FXBR |
| Harley-Davidson | 2018–2020 | Deluxe FLDE |
| Harley-Davidson | 2018–2024 | Fat Bob 114 FXFBS |
| Harley-Davidson | 2018–2020 | Fat Bob FXFB |
| Harley-Davidson | 2018 | Fat Boy 114 Anniversary FLFBS |
| Harley-Davidson | 2020 | Fat Boy 114 Anniversary FLFBSANV |
| Harley-Davidson | 2018–2024 | Fat Boy 114 FLFBS |
| Harley-Davidson | 2023 | Fat Boy Anniversary FLFBSANV |
| Harley-Davidson | 2018–2020 | Fat Boy FLFB |
| Harley-Davidson | 2019–2020 | FXDR 114 FXDRS |
| Harley-Davidson | 2018 | Heritage Classic 114 Anniversary FLHCS |
| Harley-Davidson | 2018–2024 | Heritage Classic 114 FLHCS |
| Harley-Davidson | 2023 | Heritage Classic Anniversary FLHCSANV |
| Harley-Davidson | 2018–2021 | Heritage Classic FLHC |
| Harley-Davidson | 2024 | Hydra-Glide Revival FLI |
| Harley-Davidson | 2022 | Low Rider El Diablo FXRST |
| Harley-Davidson | 2018–2020 | Low Rider FXLR |
| Harley-Davidson | 2020–2024 | Low Rider S FXLRS |
| Harley-Davidson | 2022–2024 | Low Rider ST FXLRST |
| 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 | 2021–2024 | Street Bob 114 FXBBS |
| Harley-Davidson | 2018–2020 | Street Bob FXBB |
Touring 24 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2023 | Electra Glide Highway King FLHFB |
| Harley-Davidson | 2019–2022 | Electra Glide Standard FLHT |
| Harley-Davidson | 2017–2019 | Electra Glide Ultra Classic FLHTCU |
| Harley-Davidson | 2021 | Revival FLH |
| Harley-Davidson | 2023 | Road Glide Anniversary FLTRXSANV |
| Harley-Davidson | 2017–2023 | Road Glide FLTRX |
| Harley-Davidson | 2020–2024 | Road Glide Limited FLTRK |
| Harley-Davidson | 2017–2023 | Road Glide Special FLTRXS |
| Harley-Davidson | 2017–2019 | Road Glide Ultra FLTRU |
| Harley-Davidson | 2017–2019 | Road King Classic FLHRC |
| Harley-Davidson | 2017–2022 | Road King FLHR |
| Harley-Davidson | 2025 | Road King Special FLHRXS |
| Harley-Davidson | 2017–2024 | Road King Special FLHRXS |
| Harley-Davidson | 2018 | Street Glide Anniversary FLHX |
| Harley-Davidson | 2023 | Street Glide Anniversary FLHXSANV |
| Harley-Davidson | 2017–2023 | Street Glide FLHX |
| Harley-Davidson | 2018 | Street Glide Special Anniversary FLHXS |
| Harley-Davidson | 2017–2023 | Street Glide Special FLHXS |
| Harley-Davidson | 2018 | Ultra Limited Anniversary FLHTK |
| Harley-Davidson | 2023 | Ultra Limited Anniversary FLHTKANV |
| Harley-Davidson | 2017–2024 | Ultra Limited FLHTK |
| Harley-Davidson | 2017–2019 | Ultra Limited Low FLHTKL |
| Harley-Davidson | 2018–2023 | Ultra Limited Shrine Edition FLHTK |
| Harley-Davidson | 2017 | Ultra Limited Shrine FLHTK |
Trike 8 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2025 | Freewheeler FLRT |
| Harley-Davidson | 2017–2024 | Freewheeler FLRT |
| Harley-Davidson | 2025 | Road Glide 3 FLTRT |
| Harley-Davidson | 2023–2024 | Road Glide 3 FLTRT |
| Harley-Davidson | 2025 | Tri Glide ULTRA FLHTCUTG |
| Harley-Davidson | 2018 | Tri Glide Ultra Anniversary FLHTCUTG |
| Harley-Davidson | 2023 | Tri Glide Ultra Anniversary FLHTCUTGANV |
| Harley-Davidson | 2017–2024 | Tri Glide Ultra FLHTCUTG |
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