35070-80 "the Cure" Main Drive Gear Seal Kit for 4-SPEED Big Twin
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Iron City Dealer
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Specifications
- Brand
- HD MGI
- Part Number
- 710752
- OEM Reference
- 35070-80
- Pack Quantity
- Each
- Category
- Transmission 4-speed Parts
- VAT Rate
- 20%
About This Product
"The Cure" seal kit is the definitive answer to the chronic main drive gear oil leaks found on 4-speed Big Twin transmissions. This kit addresses the original design's lack of a seal by providing a hardened two-piece stainless steel spacer and a Viton O-ring, ensuring a permanent, leak-free connection. It can be installed easily behind the main shaft oil seal without the need for a full transmission teardown. This specific kit replaces OEM 35070-80 and is designed to fit 1980–1981 Big Twin and FX models. It is a must-have for any mechanic or owner looking to keep their classic Harley-Davidson drivetrain clean and reliable.
Fitment
14 modelsBig Twin | FX
Softail 5 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1981 | BLACKLINE FXS |
| Harley-Davidson | 1981 | SUPER GLIDE FXEF |
| Harley-Davidson | 1981 | SUPER GLIDE FXE |
| Harley-Davidson | 1981 | SUPER GLIDE FXB |
| Harley-Davidson | 1981 | WIDE GLIDE FXWG |
Touring 9 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1981 | ELECTRA GLIDE CLASSIC WITH SIDECAR FLHC WITH SIDECAR |
| Harley-Davidson | 1981 | ELECTRA GLIDE SPORT FLHS |
| Harley-Davidson | 1981 | ELECTRA GLIDE STANDARD SHRINE FLH SHRINE |
| Harley-Davidson | 1981 | HERITAGE FLH-HERITAGE |
| Harley-Davidson | 1981 | Heritage Classic FLHC |
| Harley-Davidson | 1981 | Street Glide® FLHX |
| Harley-Davidson | 1981 | TOUR GLIDE FLT |
| Harley-Davidson | 1980–1981 | TOUR GLIDE CLASSIC FLTC |
| Harley-Davidson | 1981 | TOURING REVIVAL FLH |
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