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9CT389SS50 Ford 9-Inch Third Member, 3.89 Gear Ratio, 31-Spline Currie TwinTrac®, 1350 Chromoly Yoke
InfoVehicle Info Needed
CURRIEPART NUMBER: 272-J000020

9CT389SS50 Ford 9-Inch Third Member, 3.89 Gear Ratio, 31-Spline Currie TwinTrac®, 1350 Chromoly Yoke

$1,75000
ShippingShips on 11/12/2026
Lowest PriceLowest Price Guarantee

Items You Need

Installation Kit 9" Ford 3rd Member Includes:

CURRIE

Installation Kit 9" Ford 3rd Member Includes:

Part Number : 272-CE-9015
$6500
Heavy Duty Gear Oil SAE 85W-140

LUCAS OIL

Heavy Duty Gear Oil SAE 85W-140

Part Number : 639-10042
$1109$11.99
You Save$0.90
Third Member Assembly Stand for 9 in. Ford Differential

JEGS

Third Member Assembly Stand for 9 in. Ford Differential

Part Number : 555-60658
$4139$45.99
You Save$4.60
9 in. Ford Storage Box [18 1/2 in. H x 14 1/2 in. W x 13 1/2 in. D]

JEGS

9 in. Ford Storage Box [18 1/2 in. H x 14 1/2 in. W x 13 1/2 in. D]

Part Number : 555-60115
$4239$52.99
You Save$10.60

Ford 9-Inch Third Member
  • 3.89 Gear Ratio
  • 31-Spline Currie TwinTrac®
  • 1350 Chromoly Yoke

    Currie 9CT389SS50 Features:

    • Complete, Ready-to-Run 9-inch Third Member Assembly
    • For 31-Spline Axles
    • 3.89 Ring and Pinion Gear Ratio
    • TwinTrac® Helical-Gear Style, Limited-Slip Differential
    • Nodular Iron Sportsman Gear Case
    • Currie Aluminum Pinion Support
    • 1350-Short Chromoly Yoke
    • Requires no Friction Modifier Additives

      • Drop-In Ready Third Member Rear Axle Upgrades

      Currie Enterprises does all the hard work for you with their Complete Drop-In Third Member Assemblies! Each assembly features a brand new nodular iron housing with big bearing pinion support to maximize endurance under full power. Every unit uses a full Timken master bearing set with performance oil seals. A variety of gear ratios and locking or limited-slip differentials are available to best transfer your vehicle's torque to the ground.

    Part TypeThird Member Assembly
    Product LineCurrie Enterprises Complete Drop-In Third Member Assemblies
    BrandCURRIE
    Package Height12.0
    Package Width14.0
    Package Length20.0
    Weight89.0 PG
    Part CategoryPerformance Parts
    Yoke IncludedYes
    Differential Carrier DesignTwin Trac
    Ring And Pinion Ratio3.89
    Gear CaseNodular Iron
    Yoke Style1350 Series
    Differential Type9 in. Ford
    Part FitmentSemi Universal
    Ring And Pinion IncludedYes
    Pinion SupportAluminum Big Bearing
    Vendor Part Number9CT389SS50
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning