Performance & Replacement Transmission & Drivetrain Parts

Gear, Ring and Pinion, 3.73:1 Ratio, 1.625 in. Pinion, 30-Spline, GM 8.5/8.6 in., Set

Part Number: YGA-24158

4.1 out of 5 stars ( 10 )

Estimated Ship Date: Today

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Manual Shifter, Street Super, Muncie, BW T10/Super T10, Ford T&C, Each

Part Number: HUU-3917535

4.63 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Differential Cover, Cap Support, Aluminum, Black, Perfect Launch Logo, GM, 8.2 in., 8.5 in., Each

Part Number: PRO-66668

4.32 out of 5 stars ( 50 )

Estimated Ship Date: Today

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Flexplate, 168-Tooth, Billet Steel, Internal Balance, GM LS Series, 6 Bolt Crank, SFI 29.2, Each

Part Number: SUM-G127SFI

Not Yet Reviewed

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Differential Carrier, Positraction, Nodular Iron, GM 8.875 in., 30 Spline, 3.08 to 3.90 Ratio, Each

Part Number: SUM-730946

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Torque Converter, Saturday Night Special, Chevy, TH350, TH400, 12 in. Diameter, Each

Part Number: TCI-241500-A

3.18 out of 5 stars ( 17 )

Estimated Ship Date: Today

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Automatic Transmission Kickdown Cable, Hi-Tech, Natural Braided Stainless Steel, Natural Aluminum Fittings, Torqueflite 727, Kit

Part Number: LOK-KD-2727HT

4.62 out of 5 stars ( 58 )

Estimated Ship Date: Today

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Clutch Kit, Centerforce II, 1.125 in. - 10-spline, Organic Disc, Pressure Plate, Flywheel, Jeep, 3.6L, Kit

Part Number: CTF-KCFT379176

3.86 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Shifter, Pro Gate, 3-Speed, Automatic, Forward Shift Pattern, Black, Chevy, Each

Part Number: BMM-80889

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Today

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Front Axle Actuator, Posi-Lok, Chevy, GMC, Kit

Part Number: POS-600

4.52 out of 5 stars ( 60 )

Estimated Ship Date: Today

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Transmission Pan, Stock, Aluminum, Polished, Finned, GM, 700R4, Each

Part Number: SUM-433886

4.59 out of 5 stars ( 79 )

Estimated Ship Date: Today

Manual Shifter, Competition, Plus, Chevy, Pontiac, Each

Part Number: HUU-3916848

4.42 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Flexplate Bolts, Pro Series, 7/16 in. x 20 RH, .725 in. Length, Chevy, Big Block, Small Block V6, Set of 6

Part Number: ARP-200-2906

4.87 out of 5 stars ( 83 )

Estimated Ship Date: Today

Automatic Transmission Rebuild Kit, Kolene Steels, GM, 700R4, Lockup, 30-Spline, Kit

Part Number: SUM-705023

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Transmission Pan, Deep, Aluminum, Natural, Finned with Summit Logo, Case Fill, Ford, C-4, Case Fill, Each

Part Number: SME-1006

4.55 out of 5 stars ( 20 )

Estimated Ship Date: Mar 17, 2026 if ordered today

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Hub Conversion, Manual to Automatic, Ford, Lincoln, Pair

Part Number: RCV-IWE-FD

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 2, 2026 if ordered today

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Transmission Pan, Deep, Aluminum, Natural, Finned, Summit Logo, TH250, TH350, Each

Part Number: SME-1000

4.49 out of 5 stars ( 51 )

Estimated Ship Date: Today

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Flexplate, 168-Tooth, Steel, External Balance, 1-Piece Rear Main Seal, SFI 29.1, Chevy, Each

Part Number: PIO-871006

4.5 out of 5 stars ( 10 )

Estimated Ship Date: Today

Automatic Shifter, Ford, 6R80, 6 in. Straight Chrome Stick, Original Brushed Mushroom Knob, Each

Part Number: LOK-ES6R80FM

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Differential Cover, Aluminum, Cap Support, Drain/Filler Plugs, Bolts, Gaskets, Ford, Kit

Part Number: FMS-M-4033-G3

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Flywheels, OE Replacement, Cast Iron, 168-tooth, 30 lbs., External Engine Balance, Chevy, Big Block, Each

Part Number: SUM-700096

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Differential, Posi Performance, Limited Slip, 30-Spline, GM, 8.5 in., Truck, 3 Series, Each

Part Number: ETN-19559-010

4.9 out of 5 stars ( 10 )

Estimated Ship Date: Today

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Slave Cylinder, Aluminum, Black, Pull-Style, 11 3/4 in. Extended, 1 3/8 in. Stroke, Universal, Each

Part Number: WIL-260-1333

3.55 out of 5 stars ( 22 )

Estimated Ship Date: Today

Bellhousing Bolts, Hex, 3/8-16 in. Thread, 8740 Chromoly, Black Oxide, 1.375 in. UHL, Chevy, Kit

Part Number: ARP-129-0901

4.97 out of 5 stars ( 86 )

Estimated Ship Date: Today

Flexplate, 157-Tooth, External Engine Balance, 28 oz. Imbalance, SFI 29.1, Ford, Small Block, Each

Part Number: SUM-G115SFI

5.0 out of 5 stars ( 12 )

Estimated Ship Date: Today