Description
Original Equipment Manufacturer (OEM) Harley-Davidson Shovelhead Big Twin 4-Speed "Rotary Top" (Cow-Pie Style) Transmission Case Housing Shell.
- Casting Part Number: 34707-82A
- Foundry Casting Date Stamp: 7/83 (July 1983)
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Design Configuration: Rotary Top / Cow-Pie Shifter Style 4-Speed Manual Gearbox Case
Up for sale is a genuine vintage factory Harley-Davidson 4-speed transmission main case housing shell. Removed directly from a late-generation Shovelhead Big Twin, this is an authentic US-made structural aluminum casting. It features the crisp, factory-raised part identification markings ("34707-82A", "213", "7/83") on the lower mounting flank.
Avoid cheap unbranded aftermarket transmission cases that suffer from poor internal alignment tolerances or brittle mounting flanges. This factory original housing provides the exact structural framework needed to handle high engine torque, ensuring correct shaft-to-shaft parallelism and clean bearing seating alignments. It is the ultimate foundation asset for a full ground-up Shovelhead transmission overhaul, replacing a case with cracked frame tabs, a stripped oil drain plug, or building out a custom vintage chopper build.
🏍️ Fitment & Vehicle Compatibility:
Direct factory drop-in application for late-style 4-speed Shovelhead manual assemblies:
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Harley-Davidson Shovelhead Big Twin Series: Fits 1979 to Early 1984 FL, FLH, FLHS Electra Glide series, and FX, FXE, FXEF, FXS Low Rider, and FXWG Wide Glide configurations utilizing the console or hand-shifted rotary top lid assembly. (Does not fit early ratchet-top configurations unless completing a full internal component retrofit).
🔍 Condition Notes:
This is a pre-owned vintage factory takeoff motorcycle transmission housing.
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Structural Integrity: The main cast aluminum body is completely solid with absolutely zero hairline stress fractures or structural cracks along the internal alignment partitions.
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Mounting Ears & Flanges: The critical bottom plate frame mounting ears, kicker/trapdoor mating lips, and top cover gasket tracks are clean, smooth, and fully intact.
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Threads & Bores: The internal bearing races are firm and free of spinning scars or wallowing. Main oil drain plug and mounting bolt threads are clean and un-stripped, though a thorough cleaning, degreasing, and installation of fresh new bearings/seals is mandatory prior to final transmission gear cluster assembly.
Fast shipping with tracking included. Please carefully review all detailed close-up photos to verify your mounting alignment configuration before purchasing.
