Description
HARDDRIVE rear master cyl oem oe#42456-8. Manufacturer part number 29-003.
WPS part number 820-51815.
HARDDRIVE rear master cyl oem oe#42456-8.
In stock
HARDDRIVE rear master cyl oem oe#42456-8. Manufacturer part number 29-003.
WPS part number 820-51815.
WPS lists this part for the following vehicles. Match your exact model and year.
Follow the position, mounting and installation notes in the product description. Modified vehicles may require different parts.
| Years | Make | Model |
|---|---|---|
| 1996–2003 | Harley Davidson | XL1200C Sportster 1200 Custom |
| 1996–2003 | Harley Davidson | XL1200S Sportster Sport |
| 1999–2003 | Harley Davidson | XL883C Sportster 883 Custom |
| 1994–1995 | Harley Davidson | XL883D Sportster 883 Deluxe |
| 2002–2003 | Harley Davidson | XL883R 883 Roadster |
| 1987 | Harley Davidson | XLH1100 Sportster 1100 |
| 1988–2003 | Harley Davidson | XLH1200 Sportster 1200 |
| 1987–2003 | Harley Davidson | XLH883 Sportster 883 |
| 1987–1995 | Harley Davidson | XLH883D Sportster 883 Deluxe |
| 1987–2003 | Harley Davidson | XLH883H Sportster 883 Hugger |
Source: WPS vehicle-fitment data · WPS part 820-51815 · Checked November 11, 2026.
| Weight | 1.3227 lbs |
|---|---|
| Dimensions | 11.53 × 7.16 × 1.92 in |
Match the required DOT or mineral-oil specification. Opening a hydraulic system also requires bleeding.
Match the bleeding or piston tool to your brake system.


Select your motorcycle to check for matching parts.
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