C9891 EST motor only gasket kit. 3-1/2" bore
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Specifications
- Brand
- Cometic
- Part Number
- C9891
- OEM Reference
- —
- Pack Quantity
- Sold as kit
- Category
- Gasket Sets Motor
- VAT Rate
- 20%
About This Product
This Cometic EST motor only gasket kit is designed for 1984 to 1991 Big Twin models with a 3-1/2 inch bore. It is an ideal solution for a complete engine overhaul, providing all necessary internal gaskets, seals, and O-rings, though it excludes the primary gaskets. The kit features .040 inch thick Multi-Layer Steel head gaskets, which consist of stainless spring steel layers covered in high-temperature rubber for a superior seal. The .020 inch thick base and rocker gaskets are made from Single-Layer Steel with a Viton coating to prevent leaks. This kit is sold as a kit and includes Viton valve seals with outer springs for a perfect seal.
Manufacturer part number: C9891.
Fitment
31 models84-91 Big Twin
Electra Glide 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1984 | FLH Police 80 FLH |
FXR 10 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1989–1990 | FXR Convertible FXRS |
| Harley-Davidson | 1984–1990 | FXR Low Glide FXRS |
| Harley-Davidson | 1988–1990 | FXR Low Rider FXLR |
| Harley-Davidson | 1986–1990 | FXR Super Glide FXR |
| Harley-Davidson | 1984–1990 | FXR Touring FXRT |
| Harley-Davidson | 1991 | Low Rider Convertible FXRS |
| Harley-Davidson | 1991 | Low Rider Custom FXLR |
| Harley-Davidson | 1991 | Low Rider FXRS |
| Harley-Davidson | 1991 | Sport Glide FXRT |
| Harley-Davidson | 1991 | Super Glide FXR |
FXR Police 3 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1984–1990 | Police Low Rider FXRP |
| Harley-Davidson | 1991 | Super Glide Police (Fairing) FXRP |
| Harley-Davidson | 1991 | Super Glide Police (Windshield) FXRP |
Softail 11 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1991 | Fat Boy FLSTF |
| Harley-Davidson | 1984 | FX Super Glide FXE |
| Harley-Davidson | 1984–1986 | FX Wide Glide FXWG |
| Harley-Davidson | 1991 | Heritage Softail Classic FLSTC |
| Harley-Davidson | 1987–1991 | Softail Custom FXSTC |
| Harley-Davidson | 1990 | Softail Fat Boy FLSTF |
| Harley-Davidson | 1988–1990 | Softail Heritage Classic FLSTC |
| Harley-Davidson | 1986–1990 | Softail Heritage FLST |
| Harley-Davidson | 1988–1990 | Softail Springer FXSTS |
| Harley-Davidson | 1984–1990 | Softail Standard FXST |
| Harley-Davidson | 1991 | Springer Softail FXSTS |
Touring 6 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1984 | Tour Glide Classic FLT |
| Harley-Davidson | 1984 | Tour Glide FLT |
| Harley-Davidson | 1991 | Tour Glide Ultra Classic FLTCU |
| Harley-Davidson | 1984 | Touring Electra Glide FLH |
| Harley-Davidson | 1984–1990 | Touring Electra Glide Sport FLHS |
| Harley-Davidson | 1989–1990 | Touring Tour Glide Classic Ultra FLTCU |
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