1-215-011-05 Ford 9 in. HD Third Member Assembly, 35-Spline Spool, 3.89:1 Ratio
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SPEEDMASTERPART NUMBER: 746-1-215-011-05

1-215-011-05 Ford 9 in. HD Third Member Assembly, 35-Spline Spool, 3.89:1 Ratio

$1,47000
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Items You Need

75W-90 Multi-Purpose Synthetic Gear Oil [1 Quart]

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75W-90 Multi-Purpose Synthetic Gear Oil [1 Quart]

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Limited Slip Additive [4oz Bottle]

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Limited Slip Additive [4oz Bottle]

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Fluid Extraction and Fill Pump [200 cc]

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Penetrating Oil [11 oz. Aerosol Can]

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31-Spline Third Member Assemblies
Ford 9 in. HD Third Member Assembly
  • Aluminum Case
  • 35-Spline Spool
  • 3.89:1 Ratio
    • Includes:
    • 1350 Series Yoke
    • 8620 Steel Gears
    • 3.250 in. Carrier Bearing
    • Ring and Pinion
    • Bearings
    • (10) Pinion Bolts

      Speedmaster 1-215-011-05 Features:

      Speedmaster Ford 9 in. third-member assemblies are designed to help you get that horsepower to the ground. They include an aluminum thru-bolt design center section, as well as a forged chromoly steel spool, 1350 series yoke, Daytona pinion support, and gear ratio. Whether you're assembling a daily driver, street rod, or race car, Speedamster's third-member assemblies will provide the durability that your vehicle deserves.

    • Ready-to-Install Third Member Assemblies

      Speedmaster Ford 9-in. Complete Third Member Assemblies feature a Torque Worm 6-pinion limited-slip or full-spool differential in 28 and 31-spline axle shaft configurations. Third Member Assemblies are available in your choice of the most popular gear ratios and contain a new A356-T6 aluminum case that is assembled with all-new bearings, seals, heavy-duty ring and pinion, one-piece billet (through bolt) main caps,12-point bolts, u-joints/u-bolts, and precision-machined 1350 billet steel yoke. The 1350-series yoke is ideal for all forms of motorsports ranging from V8 SUPERCAR through Group 1 Drag Racing. 

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      HD-style cases are rated at 850 HP but limited due to the size of the spline axle shaft.
      Ultra HD-style cases are rated at 1200 HP but limited due to the size of the spline axle shaft.

      LSD (Limited Slip Differential)
      HD ( Heavy Duty)

      Note: Each Third Member is to be used with a mineral-based oil of a range of EP140 Extreme pressure at a minimum. DO NOT USE split grades eg. 85/140 (these are not recommended). Failure to use the correct oil can result in gear damage, noise and may void your manufacturer's warranty.

    Part TypeThird Member Assembly
    Product LineSpeedmaster Ford 9-in. Complete Third Member Assemblies
    BrandSPEEDMASTER
    Package Height12.0
    Package Width14.0
    Package Length20.0
    Weight60.0 PG
    Part CategoryPerformance Parts
    Main Cap Retention StyleBolt
    Main Cap MaterialAluminum
    Yoke IncludedYes
    Ring And Pinion Ratio3.89:1
    Case StyleFord 9 in.
    QuantitySold individually
    Yoke Style1350 Series
    Part FitmentSemi Universal
    Case MaterialAluminum
    Pinion Support Bolt Quantity10
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning