Twin Power Evolution Big Twin Lower Rocker Box Gaskets 1 Piece Pr
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Twin Power Evolution Big Twin Lower Rocker Box Gaskets 1 Piece Pr
Replace or service the correct Harley Dyna component with this Twin Power gasket/seal. Exact year/model compatibility and part number matter on Harley replacement parts, especially electrical, drivetrain, brake, and engine components.
Key Features
- Twin Power lower rocker box gaskets provide reliable sealing between the rocker box and head on Twin Cam and Evolution Big Twin engines, helping reduce top-end oil leaks.
Product Details
- Brand: Twin Power
- Manufacturer Part Number: 043203
- Product Type: Gasket/Seal
- Application Focus: Harley Dyna
- OEM Cross-Reference: 17038-90
Fitment
| Year | Make | Model |
|---|---|---|
| 1994-1998 | Harley-Davidson | FLHR Road King |
| 1998 | Harley-Davidson | FLHRCI Road King Classic |
| 1996-1997 | Harley-Davidson | FLHRI Road King |
| 1987-1993 | Harley-Davidson | FLHS Electra Glide Sport |
| 1986-1998 | Harley-Davidson | FLHT Electra Glide Standard |
| 1984-1998 | Harley-Davidson | FLHTC Electra Glide Classic |
| 1996-1998 | Harley-Davidson | FLHTCI Electra Glide Classic |
| 1989-1997 | Harley-Davidson | FLHTCU Electra Glide Ultra Classic |
| 1995-1999 | Harley-Davidson | FLHTCUI Electra Glide Ultra Classic |
| 1986-1990 | Harley-Davidson | FLST Heritage Softail |
| 1988-1999 | Harley-Davidson | FLSTC Heritage Softail Classic |
| 1990-1999 | Harley-Davidson | FLSTF Fat Boy |
| 1993 | Harley-Davidson | FLSTN Heritage Softail Nostalgia |
| 1994-1996 | Harley-Davidson | FLSTN Heritage Softail Special |
| 1997-1999 | Harley-Davidson | FLSTS Heritage Springer |
| 1996 | Harley-Davidson | FLTCUI Tour Glide Ultra Classic |
| 1998 | Harley-Davidson | FLTR Road Glide |
| 1998 | Harley-Davidson | FLTRI Road Glide |
| 1995-1998 | Harley-Davidson | FXD Dyna Super Glide |
| 1993-1998 | Harley-Davidson | FXDL Dyna Low Rider |
| 1994-1998 | Harley-Davidson | FXDS-Conv Dyna Convertible |
| 1993-1998 | Harley-Davidson | FXDWG Dyna Wide Glide |
| 1984-1994 | Harley-Davidson | FXR Super Glide II |
| 1999 | Harley-Davidson | FXR2 |
| 1999 | Harley-Davidson | FXR3 |
| 1985-1987 | Harley-Davidson | FXRC Low Rider Chrome |
| 1986 | Harley-Davidson | FXRD Sport Glide Grand Touring |
| 1984 | Harley-Davidson | FXRDG Disc Glide |
| 1985-1995 | Harley-Davidson | FXRPF Police |
| 1984-1992 | Harley-Davidson | FXRS Low Glide |
| 1990-1994 | Harley-Davidson | FXRS-Conv Low Rider Sport Convertible |
| 1984-1992 | Harley-Davidson | FXRT Sport Glide |
| 1984-1999 | Harley-Davidson | FXST Softail Standard |
| 1999 | Harley-Davidson | FXSTB Night Train |
| 1986-1999 | Harley-Davidson | FXSTC Softail Custom |
| 1988-1999 | Harley-Davidson | FXSTS Springer Softail |
| 1995-1997 | Harley-Davidson | FXSTSB Bad Boy |
Clear Harley fitment, manufacturer part numbers, and powersports-focused support help you match the right replacement or upgrade before the bike is apart.
Once your Steel Steeds gear leaves our warehouse, it typically arrives at your doorstep within 2–4 business days, unless otherwise noted. We partner with trusted shipping carriers to ensure your off-road essentials get to you fast and hassle-free. So gear up with confidence—your next big adventure is just around the corner!
Changed your mind? No problem. Most new, unused, and uninstalled items can be returned within 30 days of delivery.
We do not charge a standard restocking fee. Customers are responsible for return shipping unless the item arrived damaged, defective, or incorrect.
Items must be returned in original packaging and in resalable condition.
We are committed to providing quality products and stand behind our items with a warranty. Exact coverage may vary, so please refer to our warranty page for more details!
