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OEM Rocker Box for 1971–1985 Harley Sportster XL1000 Ironhead – Front or Rear Cylinder Housing #251

Description

🛠️ Description

This OEM Harley-Davidson rocker box (part #251) is a factory-cast upper valve cover for the iconic XL1000 Ironhead Sportster engine, compatible with 1971 to 1985 models. Designed to house the rocker arms above either the front or rear cylinder, this rocker box features the correct bolt pattern and factory Harley casting marks — ideal for restoring a vintage Ironhead or replacing a damaged top-end component.

Constructed from cast aluminum, this rocker box is ready for polish, powder coat, or installation as-is.

Key Features:

  • Genuine Harley-Davidson rocker box – OEM casting #251

  • Compatible with 1971–1985 XL1000 Ironhead Sportster models

  • Cast aluminum housing for rocker arm assembly

  • Fits front or rear cylinder positions

  • Factory bolt holes, oil passages, and gasket surface intact

  • Ideal for rebuilds, restorations, or top-end replacements

Fitment:

  • Harley-Davidson XL1000 Sportster Ironhead
     • 1971–1985

  • May also fit other early Ironhead variants (confirm compatibility by casting number)

 

OEM Rocker Box for 1971–1985 Harley Sportster XL1000 Ironhead – Front or Rear Cylinder Housing #251

Product form

🛠️ Description This OEM Harley-Davidson rocker box (part #251) is a factory-cast upper valve cover for the iconic XL1000 Ironhead... Read more

1 in stock

$60.00

    • Shipped today? Order within: Sep 07, 2026 10:00:00 -0400

    Description

    🛠️ Description

    This OEM Harley-Davidson rocker box (part #251) is a factory-cast upper valve cover for the iconic XL1000 Ironhead Sportster engine, compatible with 1971 to 1985 models. Designed to house the rocker arms above either the front or rear cylinder, this rocker box features the correct bolt pattern and factory Harley casting marks — ideal for restoring a vintage Ironhead or replacing a damaged top-end component.

    Constructed from cast aluminum, this rocker box is ready for polish, powder coat, or installation as-is.

    Key Features:

    • Genuine Harley-Davidson rocker box – OEM casting #251

    • Compatible with 1971–1985 XL1000 Ironhead Sportster models

    • Cast aluminum housing for rocker arm assembly

    • Fits front or rear cylinder positions

    • Factory bolt holes, oil passages, and gasket surface intact

    • Ideal for rebuilds, restorations, or top-end replacements

    Fitment:

    • Harley-Davidson XL1000 Sportster Ironhead
       • 1971–1985

    • May also fit other early Ironhead variants (confirm compatibility by casting number)

     

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