904850 Rocker arm, rear exhaust
incl. VAT
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Iron City Dealer
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Specifications
- Brand
- MCS
- Part Number
- 904850
- OEM Reference
- 17395-57A
- Pack Quantity
- Each
- Category
- Rocker Arms And Shafts
- VAT Rate
- 20%
About This Product
Designed specifically for the rear exhaust position, this MCS rocker arm is a high-quality replacement for 1957 to 1985 XL Sportster models. It serves as a direct replacement for OEM 17395-57A, offering the correct geometry and durability for the Ironhead valvetrain. Maintaining your rocker arms is vital for preventing excessive wear on your valves and pushrods. This stock-style component is built to withstand the high temperatures and mechanical stresses of the exhaust stroke. Whether you are performing a routine top-end refresh or a complete engine overhaul, this rocker arm ensures your rear cylinder's exhaust valve operates smoothly and efficiently. It is a reliable choice for any mechanic looking to keep a classic Sportster running at its best.
Manufacturer part number: 904850.
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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