Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke
Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke

Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joke

  • Sale
  • $299.99
Shipping calculated at checkout.

Harley 4-Speed V-Twin Vented Chrome Outer Primary Cover Set w/ MOON Derby & Joker Machine Inspection Cover

V-Twin 43-0331 Chrome Primary Cover w MOON MP400H3 Derby Joker Inspection Cover

New V-Twin Manufacturing #43-0331 slotted chrome outer primary cover custom assembled with a vintage Mooneyes MP400H3 3-hole derby cover and a Joker Machine TJ finned inspection cover. Both covers are stand-off mounted over heavy brass honeycomb mesh. Includes a full set of mounting bolts and brass washers.

Item Specifics
  • Brand: V-Twin Manufacturing (Cover), Mooneyes (Derby Cover), Joker Machine (Inspection Cover)
  • Manufacturer Part Number: 43-0331 (Primary Cover footprint)
  • Surface Finish: Show-Quality Triple Chrome Plated
  • Bolt Pattern: 9-Hole Configuration
  • Placement on Vehicle: Left Side, Engine Primary
  • Drive Type Fitment: Custom 4-Speed Belt Drive Conversions
  • Condition: Excellent used condition (see photos for exact condition details) 
Item Description
Up for sale is a complete, custom aftermarket Harley-Davidson 4-Speed Outer Primary Upgrade Package. If you are building a vintage chopper, bobber, or retro custom bike with an open/enclosed belt drive conversion, this premium package saves you the time and expense of tracking down individual parts.
What is Included:
  1. V-Twin Mfg. Chrome Vented Outer Primary Cover: Features beautifully milled heat-dissipation slots designed specifically to pull air through and keep high-performance primary belts running cool.
  2. Authentic MOON Finned Derby Cover: Iconic hot-rod styling by Mooneyes featuring crisp, horizontal casting ribs and the classic stamped "MOON" insignia. 
  3. Joker Machine Ribbed Inspection Cover: Premium finned billet aluminum design matching the vintage aesthetic. 
  4. Complete Hardware Kit: Includes a full matching set of primary cover assembly screws and washers sealed in an organization pouch.
Important Fitment Notes:
This is a Custom Application kit engineered for traditional Harley-Davidson 4-speed transmission configurations implementing an aftermarket primary belt drive conversion up to 1-3/4" wide. The milled airflow slots mean this unit is strictly for dry/belt systems and will not hold oil for factory wet chain setups. Please review your setup's bolt orientation to ensure compatibility with standard 9-hole layouts. 


Condition Notes
Derby has been lightly used but meticulously maintained. Primary is NEW OLD STOCK The chrome plating holds a high-reflection mirror finish. No  gouges, pitting, or structural cracks. Threaded holes are completely intact with clean entry. Please view the included high-resolution photos for an exact look at the item's pristine cosmetics. 

selling as pictured 100226gp
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