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P: (530) 886-0771

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Keeping classic Minis on the road since 1974

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Differential parts and accessories for the classic Mini, Mini Cooper, and variants.

Products 1-48 of 61
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ARP Differential Bolt (SEN0127)
Price: $7.95
View
MADEINUSATAG||
In Stock
Item #: SEN0127 -

    Super-duty ARP bolt to attach the crown wheel to the differential cage. Sold each.

    Bearing, differential carrier
    Price: $32.95
    View
    1/4/2021 12:00:00 AM 39.9500
    In Stock
    Item #: AHU1856 -

      The same large bearing is used to support the differential in all classic Mini models. Ref: AHU1856.

      Bearing, differential carrier, RHP (AHU1856-RHP)
      Price: $69.95
      View
      10/6/2019 2:00:00 AM 57.9500
      In Stock
      Item #: AHU1856-RHP -

        Racers and other top-end customers often ask for OEM UK-made RHP brand diff bearings for longest life and proven reliability. Full width. Ref: AHU1856, AHU1856-RHP.

        Bolt, Drive Flange, 8.4 brakes (BTA0370)
        Price: $3.75
        View
        In Stock
        Item #: BTA0370 -

          Special bolt to fasten 8.4'' brake rotor (12'' wheel cars) to 21A2695 drive flange. Ref: BTA370, BTA0370.

          Bolt, Final Drive Wheel to Differential, Standard (ATA7043)
          Price: $3.25
          View
          4/21/2022 12:00:00 AM 3.95
          In Stock
          Item #: ATA7043 -

            High-tensile shouldered bolt for holding the final drive (''crown'') wheel to the differential housing.

            Bolt, Remote Shifter Housing, Short
            Price: $0.95
            View
            Out of Stock
            Item #: HDWB2721 -

              Coarse-thread bolt for Cooper remote housing to attach it to the rear of the differential. Use two (2) per car.

              Bushing, Diff Crown Wheel & Diff Cage (ATA7378)
              Price: $9.95
              View
              In Stock
              Item #: ATA7378 -

                Bushing found in all diff cages and in the center of standard crown wheels. Ref: ATA7378.

                Bushing, Diff Side Cover, Pot Joint Type (2A3538)
                Price: $6.95
                View
                4/14/2021 2:00:00 AM 9.9500
                In Stock
                Item #: 2A3538 -

                  This bushing supports the output shaft, and if worn will contribute to oil leakage; fits pot-joint and yoke-type differential side covers. Ref: 2A3538.

                  Bushing, Side cover, Flange Output
                  Price: $20.95
                  View
                  10/6/2019 2:00:00 AM 21.9500
                  In Stock
                  Item #: 22G0421 -

                    This bushing supports the Hardy-Spicer output shaft, and if worn will contribute to oil leakage. Honing required to obtain exact final clearance.

                    Collet, Hardy Spicer Outlet
                    Price: $17.95
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                    5/6/2021 2:00:00 AM 14.9500
                    In Stock
                    Item #: 88G493 -

                      Half-moon collet, locates the end of the output shaft into the Hardy Spicer drive flange, under the rubber seal. Used on early automatics and Cooper S, two (2) required per flange.

                      Cross Pin Heavy Duty Differential
                      Price: $475.00
                      View
                      6/5/2019 12:00:00 AM 359.9500
                      Out of Stock
                      Item #: C-AJJ3385 -

                        Heavy-duty differential recommended for any high performance road-driven classic Mini or Mini Cooper. Ref: C-AJJ3385.

                        Diff Output Flange Circlip, LSD
                        Price: $1.95
                        View
                        In Stock
                        Item #: CCN0122 -

                          Circlip to retain the diff output shafts used with an LSD. Two (2) required.

                          Diff Output Shaft Washer, LSD (C-BTA1243)
                          Price: $4.95
                          View
                          In Stock
                          Item #: C-BTA1243 -

                            Washer fitted next to the inner circlip to retain the diff output shaft when an LSD is fitted; for use with Cooper S output shafts. Ref: C-BTA1243.

                            Diff Pin and Planet Gear Set (C-BTA0167)
                            Price: $149.95
                            View
                            Out of Stock
                            Item #: C-BTA0167 -

                              Set includes two specially-bushed planet gears, thrust washers, uprated differential pin and roll pin. Ref: C-BTA167, 2A7062, DAM5071, DAM6624, DAM6027.

                              Diff Pin, Heavy Duty
                              Price: $24.95
                              View
                              8/25/2019 2:00:00 AM 32.9500
                              In Stock
                              Item #: C-BTA0166 -

                                The pin through the center of the diff is often ignored, but will frequently be found to have wear and should be replaced at rebuild time.

                                Diff Pinion Spider Gear, Reproduction (DAM6624E)
                                Price: $24.95
                                View
                                In Stock
                                Item #: DAM6624E -

                                  Standard differentials use two (2) of these pinion (planet) gears. Good-quality reproduction; sold each.

                                  Diff Side Cover, Rod Change, for Hardy Spicer or LSD (22G0420)
                                  Price: $119.95
                                  View
                                  3/15/2018 2:00:00 AM 139.95
                                  Out of Stock
                                  Item #: 22G0420 -

                                    If you want to install flange- type differential output shafts, such as used with Hardy-Spicer drive shaft couplings or with a Limited Slip Differential (LSD) in a rod change gearbox,

                                    Diff Side Cover, Yoke-type (CHM0085)
                                    Price: $109.95
                                    View
                                    In Stock
                                    Item #: CHM0085 -

                                      Differential side cover with bushing installed. Fits Minis 1959-73, but can also be used on left side of rod-change transmission with yoke outputs or pot joint. Ref: CHM85, CHM0085.

                                      Diff Spider Gear Thrust Washer, 1980-on
                                      Sale: $6.38
                                      View
                                      In Stock
                                      Item #: DAM5071 -
                                      • REDUCE01

                                      Revised cupped thrust washer used after 1980, identifiable by a locking ear that keeps the washer from spinning and wearing into the diff cage

                                      Diff Spider Gear Thrust Washer, to 1980 (2A7062)
                                      Price: $5.95
                                      View
                                      2/24/2021 2:00:00 AM 7.9500
                                      In Stock
                                      Item #: 2A7062 -

                                        Cupped thrust washer as used on all classic Mini differentials to 1980. Ref: 2A7062.

                                        Diff Stub Shaft, LSD, w/ Pot Joints (C-BTA1263)
                                        Sale: $127.46
                                        View
                                        12/15/2021 12:00:00 AM 159.95
                                        In Stock
                                        Item #: C-BTA1263 -
                                        • REDUCE01

                                        If you are installing an LSD, other than the Swift ATB one, into a gearbox to be equipped with ''pot joints'' (inboard CV joints), you will need two of these.

                                        Diff Thrust Washer, Fiber (BTA0101)
                                        Price: $5.95
                                        View
                                        In Stock
                                        Item #: BTA0101 -

                                          The large-diameter fiber thrust washer for the output shafts on all standard classic Mini differentials. Ref: BTA101, BTA0101.

                                          Differential Pinion Locking Pin (RPS1418)
                                          Price: $2.75
                                          View
                                          In Stock
                                          Item #: RPS1418 -

                                            Pin locks the main pinion pin to the differential cage. Ref: RPS1418.

                                            Differential Shim, .006 (DAM3108)
                                            Price: $2.95
                                            View
                                            In Stock
                                            Item #: DAM3108 -

                                              Shimming used so the differential bearings to achieve proper preload; .006'' thick. Ref: DAM3108.

                                              Differential Shim, .010 (DAM3109)
                                              Price: $2.95
                                              View
                                              In Stock
                                              Item #: DAM3109 -

                                                Shim used with the differential bearings for proper preload; .010'' thick. Ref: DAM3109.

                                                Differential Shim, .020 (DAM3633)
                                                Price: $2.95
                                                View
                                                7/12/2021 2:00:00 AM 3
                                                Out of Stock
                                                Item #: DAM3633 -

                                                  Used to shim the diff to obtain proper bearing preload; .020'' thick. Ref: DAM3633.

                                                  Final Drive Gear Set, 2.95
                                                  Price: $389.95
                                                  View
                                                  12/4/2018 12:00:00 AM 269.9500
                                                  Out of Stock
                                                  Item #: STF0033 -

                                                    2.95 crown wheel and pinion set; reduces your RPM at a given speed, so will allow quieter and more economical highway driving. 20/59 tooth count

                                                    Final Drive Gear Set, 3.1 (STF0038)
                                                    Price: $389.95
                                                    View
                                                    12/3/2018 2:00:00 AM 269.9500
                                                    In Stock
                                                    Item #: STF0038 -

                                                      You can reduce engine RPM by about 10% or more at any road speed by changing to this final drive, which must be installed on the differential.

                                                      Final Drive Gear Set, 3.1, Used (STF0038-USED)
                                                      Price: $299.95
                                                      View
                                                      Out of Stock
                                                      Item #: STF0038-USED -

                                                        Used set of 3.1 final drive gears

                                                        Final Drive Gear Set, 3.2
                                                        Price: $389.95
                                                        View
                                                        4/1/2018 2:00:00 AM 295.0000
                                                        Out of Stock
                                                        Item #: STF0031 -

                                                          Final drive ring and pinion gears with 3.2 ratio. Tooth count is 19/61.

                                                          Final Drive Gear Set, 3.44
                                                          Price: $259.95
                                                          View
                                                          12/4/2018 12:00:00 AM 259.9500
                                                          Out of Stock
                                                          Item #: STF0036 -

                                                            Ring and pinion final drive gears as used on the classic Mini Cooper S and many 998cc Minis from 1970-on.

                                                            Final Drive Gear Set, 3.64, Used
                                                            Price: $99.00
                                                            View
                                                            Out of Stock
                                                            Item #: CWP3.64-USED -

                                                              Ring and pinion final drive gears, tooth count 17/62, 3.64 ratio. Used condition, supplied as a matched set

                                                              Final Drive Gear Set, 3.7 LSD (C-BTA1248M)
                                                              Price: $599.99
                                                              View
                                                              In Stock
                                                              Item #: C-BTA1248M -

                                                                Competition-quality 3.7:1 ratio final drive ring and pinion gears to fit limited-slip differential (LSD).

                                                                Final Drive Gear Set, 3.7 STD/LSD (SW-TR37)
                                                                Price: $729.00
                                                                View
                                                                In Stock
                                                                Item #: SW-TR37 -

                                                                  3.7 final drive ratio, semi-helical for maximum strength; available to fit standard or LSD-type differentials.

                                                                  Final Drive Gear Set, 3.93 STD/LSD, Quaife
                                                                  Price: $729.00
                                                                  View
                                                                  In Stock
                                                                  Item #: SW-TR39 -

                                                                    The 3.9 is a good all-around final drive ratio for the Vintage racer. These are semi-helical for maximum strength and superbly manufactured by Quaife, one of the UK's leading transmission manufacturers.

                                                                    Flange Diff Output Shaft, for standard side covers
                                                                    Price: $450.00
                                                                    View
                                                                    In Stock
                                                                    Item #: FOR136 -

                                                                      Special Swiftune-developed differential output shafts to match Hardy-Spicer drive shaft couplings. New materials and technology allow this shaft to fit the standard smaller diameter diff side cover.

                                                                      Gasket, Diff Housing, Lower (2A3506)
                                                                      Retail: $0.95
                                                                      Price: $0.86
                                                                      View
                                                                      QTYDISCOUNT
                                                                      In Stock
                                                                      Item #: 2A3506 -

                                                                        Thin paper gasket between the gear case and the differential housing. Lower section only, fits pre-rod change models. Ref: 2A3506, 2A3506B.

                                                                        Differential Housing Upper Gasket (2A3505)
                                                                        Price: $1.25
                                                                        View
                                                                        In Stock
                                                                        Item #: 2A3505 -

                                                                          Thin paper gasket between the gear case and the diff housing. Upper section only. Ref: 2A3505, 2A3505B, GUG705709GM.

                                                                          Gasket, Diff Side Cover (22A1611)
                                                                          Price: $1.75
                                                                          View
                                                                          In Stock
                                                                          Item #: 22A1611 -

                                                                            Gasket for the classic Mini's differential side cover. Ref: 22A1611, GUG705567GM.

                                                                            Gasket, Diff Side Cover, Automatic (22A1612)
                                                                            Sale: $2.51
                                                                            View
                                                                            In Stock
                                                                            Item #: 22A1612 -
                                                                            • REDUCE01

                                                                            The differential side cover for the automatic is slightly different from 4-speeds, so a different gasket is needed. Sold each.

                                                                            Gasket, Gearbox Diff Housing, Lower, Rod-Change (22G1836)
                                                                            Retail: $0.95
                                                                            Price: $0.86
                                                                            View
                                                                            QTYDISCOUNT
                                                                            In Stock
                                                                            Item #: 22G1836 -

                                                                              Thin paper gasket between the gear case and the diff housing. Lower section, fits rod change only. Ref: 22G1836, GUG705642GM.

                                                                              Gasket, Gearbox Diff Side Cover, Improved (TRK10004B)
                                                                              Price: $5.50
                                                                              View
                                                                              In Stock
                                                                              Item #: TRK10004B -

                                                                                This version of the side cover gasket comes with built-in sealant attached to the paper. Ref: TRK10004B, GUG705567GM.

                                                                                Hardy Spicer Output Flanges for Pot Joint
                                                                                Price: $399.00
                                                                                View
                                                                                In Stock
                                                                                Item #: FOR094 -

                                                                                  These flanges are used to convert from pot joint output shafts to Hardy Spicer flange type, snapping in place just like the inner CV joints, and fit the smaller, standard diff side covers.

                                                                                  Hardy-Spicer Flange Bolt Set, Competition (FOR126)
                                                                                  Price: $99.95
                                                                                  View
                                                                                  In Stock
                                                                                  Item #: FOR126 -

                                                                                    Superior race-quality bolts for the Hardy-Spicer differential output flange. A track-tested product! Sold per set/8.

                                                                                    Limited Slip Differential, Evolution (STF0100)
                                                                                    Price: $1,095.00
                                                                                    View
                                                                                    In Stock
                                                                                    Item #: STF0100 -

                                                                                      An updated and advanced version of the old popular Salisbury clutch-type limited slip differential. Ref: C-AJJ3387, C-BTA1106.

                                                                                      Limited Slip Differential, Quaife ATB
                                                                                      Price: $1,295.00
                                                                                      View
                                                                                      In Stock
                                                                                      Item #: FOR092 -

                                                                                        Now a limited slip diff that is ideal for FWD cars! The all-gear mechanism of the Quaife ATB eliminates the grabby behavior of earlier plate and pawl diffs, and reduces

                                                                                        Limited Slip Output Shaft, Hardy Spicer (C-BTA1262)
                                                                                        Price: $209.95
                                                                                        View
                                                                                        In Stock
                                                                                        Item #: C-BTA1262 -

                                                                                          Output shaft for Tran-X and Salisbury Limited Slip Differentials. Hardy Spicer coupling. Sold each.

                                                                                          Locktab, Final Drive Crown Wheel (ATA7385)
                                                                                          Price: $4.95
                                                                                          View
                                                                                          In Stock
                                                                                          Item #: ATA7385 -

                                                                                            Metal locktab to retain the six bolts that attach the crown wheel to the differential. Ref: ATA7385.