904855 Rocker arm, front intake
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Specifications
- Brand
- MCS
- Part Number
- 904855
- OEM Reference
- 17396-57A
- Pack Quantity
- Each
- Category
- Rocker Arms And Shafts
- VAT Rate
- 20%
About This Product
This MCS front intake rocker arm is a precision-made replacement for Harley-Davidson Ironhead Sportsters. It is designed to fit 1957 to 1985 XL Sportster models and serves as a direct replacement for OEM 17396-57A. As a critical component of the valvetrain, the rocker arm must provide consistent movement to ensure proper intake valve opening and closing. This stock-style reproduction is manufactured to original specifications, providing a perfect fit and reliable performance. If you are experiencing top-end clatter or uneven valve wear, replacing your old rocker arms with these high-quality units can restore the smooth operation of your engine. It is an essential part for any serious restoration or maintenance project on a vintage Sportster.
Manufacturer part number: 904855.
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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