904845 Rocker arm, front exhaust
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Specifications
- Brand
- MCS
- Part Number
- 904845
- OEM Reference
- 17394-57A
- Pack Quantity
- Each
- Category
- Rocker Arms And Shafts
- VAT Rate
- 20%
About This Product
This front exhaust rocker arm from MCS is a stock-style replacement designed for Ironhead Sportsters. It is a direct replacement for OEM 17394-57A, ensuring your valvetrain operates with the precision required for these classic engines. This rocker arm fits all XL Sportster models from 1957 to 1985. Over years of service, rocker arms can develop wear on the pads or bushings, leading to increased valvetrain noise and reduced performance. When rebuilding an Ironhead top end, using high-quality replacement components like this one is essential for restoring factory-quiet operation and reliable valve timing. It is manufactured to meet or exceed original equipment standards, providing a dependable solution for your vintage Sportster's valvetrain needs.
Manufacturer part number: 904845.
Fitment
11 models57-85 XL Sportster
Cafe Racer 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1977–1978 | Sportster 1000 XLCR-1000 |
Roadster 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1979–1980 | Sportster 1000 XLS-1000 |
Sportster 7 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1975–1980 | Sportster 1000 XLCH-1000 |
| Harley-Davidson | 1981–1985 | Sportster 1000 XLH |
| Harley-Davidson | 1979–1980 | Sportster 1000 XLH-1000 |
| Harley-Davidson | 1981–1985 | Sportster Roadster 1000 XLS |
| Harley-Davidson | 1983–1985 | Sportster Roadster 1000 XLX |
| Harley-Davidson | 1975–1978 | Sportster Standard XLH-1000 |
| Harley-Davidson | 1979 | Sportster XLCH-1000 |
XLT Touring 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1977–1980 | Sportster 1000 XLT-1000 |
55CI (883CC) OHV 4 Cycle-Twin 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1980 | Sportster Standard XLH |
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