Transmission & Rear-Ends

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Transmission Overhaul Kits & Rear-Ends from Northern Auto Parts

Perfect for restorations or performance enhancements, our transmission kits support all your transmission and rear-end requirements with precision-engineered solutions, letting the improved performance from our engine kits shine through. Our selection is designed to upgrade your vehicle's power transfer and dependability from your transmission to the wheels.

Boost your vehicle's drivetrain with Northern Auto Parts' exceptional range of transmission and rear-end components.

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  • BNM20234

    B&M

    Part #: 20234

    BNM20234

    Engine Make: B&M Performance
    pdm:Brand: B&M
    pdm:Material: Steel
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:Product Type: Automatic Transmission Modulator Valve
    pdm:Emission Code: 5
    pdm:California Proposition 65 Required: Yes
    pdm:Finish: Gold Iridited
    pdm:line_code: BNM
    pdm:Warning: California Proposition 65
    pdm:Instructions Included: Yes
    pdm:internal_sku: BNM20234
    pdm:part type: Automatic Transmission Modulator Valve
    pdm:Category: Transmission
    pdm:Sub Category: Transmission Hard Parts
    $48.35
  • BNM20260

    B&M

    Part #: 20260

    BNM20260

    Engine Make: B&M Performance
    pdm:Product Type: Automatic Transmission Valve Body Kit
    pdm:Manual Control: No
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:Emission Code: 5
    pdm:Brand: B&M
    pdm:Automotive Item Grade: High Performance
    pdm:California Proposition 65 Required: Yes
    pdm:Instructions Included: Yes
    pdm:Gasket Included: Yes
    pdm:line_code: BNM
    pdm:internal_sku: BNM20260
    pdm:Warning: California Proposition 65
    pdm:Sub Category: Service Kits
    pdm:part type: Automatic Transmission Shift Kit
    pdm:Category: Transmission
    $72.39
  • BNM20261

    B&M

    Part #: 20261

    BNM20261

    Engine Make: B&M Performance
    pdm:Automotive Item Grade: High Performance
    pdm:Gasket Included: Yes
    pdm:Emission Code: 5
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:Instructions Included: Yes
    pdm:Brand: B&M
    pdm:California Proposition 65 Required: Yes
    pdm:Warning: California Proposition 65
    pdm:Product Type: Automatic Transmission Valve Body Kit
    pdm:line_code: BNM
    pdm:internal_sku: BNM20261
    pdm:part type: Automatic Transmission Shift Kit
    pdm:Sub Category: Service Kits
    pdm:Category: Transmission
    $81.99
  • BNM20289

    B&M

    Part #: 20289

    BNM20289

    Engine Make: B&M Performance
    pdm:California Proposition 65 Chemical Name: Nickel (Metallic)
    pdm:Brand: B&M
    pdm:Additional Fluid Capacity (qts): 2
    pdm:California Proposition 65 Chemical Name: Lead
    pdm:Emission Code: 5
    pdm:Filter Extension Included: Yes
    pdm:California Proposition 65 Required: Yes
    pdm:California Proposition 65 Chemical Name: Chromium (hexavalent compounds)
    pdm:Instructions Included: Yes
    pdm:Filter Included: No
    pdm:Material: Steel
    pdm:Drain Plug Included: Yes
    pdm:Product Type: Automatic Transmission Pans
    pdm:Mounting Hardware: Yes
    pdm:Gasket Included: Yes
    pdm:Transmission: TH400
    pdm:Temperature Sensor Bung: Yes
    pdm:Warning: California Proposition 65
    pdm:Style: Deep
    pdm:Transmission Type: Automatic
    pdm:line_code: BNM
    pdm:internal_sku: BNM20289
    pdm:Gasket Or Seal Included: Yes
    pdm:Color: Chrome
    pdm:Oil Pan Gaskets Included: Yes
    pdm:Category: Transmission
    pdm:Sub Category: Transmission Hard Parts
    pdm:Transmission Filter Included: No
    pdm:Grade Type: Performance
    pdm:Mounting Hardware Included: Yes
    pdm:Capacity: 14 QT
    $130.95
  • BNM20400

    B&M

    Part #: 20400

    BNM20400

    Engine Make: B&M Performance
    pdm:Additional Contents: New needle bearing and thrust washer
    pdm:Bolt Circle Diameter (in): 10.75
    pdm:Automotive Item Grade: High Performance
    pdm:Brand: B&M
    pdm:Material: Steel
    pdm:Stall: 1800-2200
    pdm:California Proposition 65 Required: No
    pdm:Transmission: TH400
    pdm:Stall Speed: 1,800-2,200
    pdm:Emission Code: 5
    pdm:Input Spline: 30
    pdm:Product Type: Automatic Transmission Torque Converter
    pdm:Transmission: TH425
    pdm:Transmission: TH375
    pdm:Stall Torque Ratio: 1800 to 2200 RPM
    pdm:internal_sku: BNM20400
    pdm:Flexplate Change Needed: Yes
    pdm:Transmission: TH350
    pdm:Furnace Brazed: Yes
    pdm:line_code: BNM
    pdm:Transmission: TH375B
    pdm:Category: Transmission and Drivetrain
    pdm:Grade Type: Performance
    pdm:Stall Speed RPM: 1800-2200 R3
    pdm:Lock Up Type: No
    pdm:Spline Quantity: 30
    $329.95
  • BNM20402

    B&M

    Part #: 20402

    BNM20402

    Engine Make: B&M Performance
    pdm:Material: Steel
    pdm:Additional Contents: New needle bearing and thrust washer
    pdm:Furnace Brazed: Yes
    pdm:Bolt Circle Diameter (in): 10.75
    pdm:Flexplate Change Needed: Yes
    pdm:California Proposition 65 Required: No
    pdm:Emission Code: 5
    pdm:Automotive Item Grade: High Performance
    pdm:Brand: B&M
    pdm:Input Spline: 30
    pdm:Stall Torque Ratio: 2800 to 3200 RPM stall
    pdm:Transmission: TH400
    pdm:Stall Speed: 2,800-3,200
    pdm:Product Type: Automatic Transmission Torque Converter
    pdm:Transmission: TH375
    pdm:internal_sku: BNM20402
    pdm:Transmission: TH350
    pdm:Transmission: TH425
    pdm:Transmission: TH375B
    pdm:line_code: BNM
    pdm:Stall: 2800-3200
    pdm:Grade Type: Performance
    pdm:Category: Transmission
    pdm:Lockup: No
    pdm:Sub Category: Transmission Hard Parts
    pdm:Lockup Type: No
    pdm:Stall Speed RPM: 2800-3200 R3
    pdm:Lock Up Type: No
    pdm:Spline Quantity: 30
    $549.95
  • BNM20404

    B&M

    Part #: 20404

    BNM20404

    Engine Make: B&M Performance
    pdm:Bolt Circle Diameter (in): 10.75
    pdm:Automotive Item Grade: High Performance
    pdm:Additional Contents: New needle bearing and thrust washer
    pdm:Brand: B&M
    pdm:Flexplate Change Needed: Yes
    pdm:Input Spline: 30
    pdm:California Proposition 65 Required: No
    pdm:Furnace Brazed: Yes
    pdm:Product Type: Automatic Transmission Torque Converter
    pdm:Emission Code: 5
    pdm:Material: Steel
    pdm:Stall Torque Ratio: 2300 to 2500 RPM stall
    pdm:Stall: 2300-2500
    pdm:Transmission: TH375B
    pdm:Stall Speed: 2,300-2,500
    pdm:Transmission: TH425
    pdm:internal_sku: BNM20404
    pdm:Transmission: TH400
    pdm:line_code: BNM
    pdm:Transmission: TH375
    pdm:Transmission: TH350
    pdm:Grade Type: Performance
    pdm:Lock Up Type: No
    pdm:Sub Category: Transmission Hard Parts
    pdm:Category: Transmission
    $373.95
  • BNM20412

    B&M

    Part #: 20412

    BNM20412

    Engine Make: B&M Performance
    pdm:Additional Contents: New needle bearings
    pdm:Transmission: TH400
    pdm:Furnace Brazed: Yes
    pdm:Automotive Item Grade: High Performance
    pdm:Brand: B&M
    pdm:Emission Code: 5
    pdm:Input Spline: 30
    pdm:Product Type: Automatic Transmission Torque Converter
    pdm:Stall Speed: 2,300-2,500
    pdm:Flexplate Change Needed: Yes
    pdm:Transmission: TH375B
    pdm:Stall: 2300-2500
    pdm:Material: Steel
    pdm:California Proposition 65 Required: No
    pdm:Bolt Circle Diameter (in): 10.75
    pdm:Stall Torque Ratio: 2300 to 2500 RPM stall
    pdm:Transmission: TH375
    pdm:Transmission: TH350
    pdm:Transmission: TH425
    pdm:line_code: BNM
    pdm:internal_sku: BNM20412
    pdm:Sub Category: Transmission Hard Parts
    pdm:Stall Speed RPM: 2300-2500 R3
    pdm:Grade Type: Performance
    pdm:Category: Transmission
    pdm:Lock Up Type: No
    pdm:Spline Quantity: 30
    $549.95
  • BNM20416

    B&M

    Part #: 20416

    BNM20416

    Engine Make: B&M Performance
    pdm:Brand: B&M
    pdm:Bolt Circle Diameter (in): 10.75
    pdm:California Proposition 65 Required: No
    pdm:Input Spline: 30
    pdm:Transmission: TH400
    pdm:Emission Code: 5
    pdm:Transmission: TH350
    pdm:Stall Speed: 1,800-2,200
    pdm:Stall: 1800-2200
    pdm:internal_sku: BNM20416
    pdm:Transmission: TH375B
    pdm:Transmission: TH375
    pdm:Product Type: Automatic Transmission Torque Converter
    pdm:Transmission: TH425
    pdm:line_code: BNM
    pdm:Category: Transmission
    pdm:Grade Type: Performance
    pdm:Spline Quantity: 30
    pdm:Stall Speed RPM: 1800-2200 R3
    pdm:Sub Category: Transmission Hard Parts
    pdm:Lock Up Type: No
    $399.95
  • BNM21040

    B&M

    Part #: 21040

    BNM21040

    Engine Make: B&M Performance
    pdm:Emission Code: 5
    pdm:Brand: B&M
    pdm:California Proposition 65 Required: Yes
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:Gasket Included: Yes
    pdm:Product Type: Automatic Transmission Master Repair Kit
    pdm:line_code: BNM
    pdm:Instructions Included: No
    pdm:internal_sku: BNM21040
    pdm:Category: Transmission
    pdm:Sub Category: Service Kits
    pdm:part type: Automatic Transmission Shift Kit
    $449.95
  • BNM21041

    B&M

    Part #: 21041

    BNM21041

    Engine Make: B&M Performance
    pdm:Brand: B&M
    pdm:Product Type: Automatic Transmission Master Repair Kit
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:California Proposition 65 Required: Yes
    pdm:Warning: California Proposition 65
    pdm:Instructions Included: No
    pdm:Gasket Included: Yes
    pdm:Emission Code: 5
    pdm:line_code: BNM
    pdm:internal_sku: BNM21041
    pdm:Manual Control: Partial
    pdm:Category: Transmission and Drivetrain
    $449.95
  • BNM21042

    B&M

    Part #: 21042

    BNM21042

    Engine Make: B&M Performance
    pdm:Brand: B&M
    pdm:Bushings Included: Yes
    pdm:Seals: Included
    pdm:OEM Valve Body Gaskets Included: Yes
    pdm:Gasket Included: Yes
    pdm:internal_sku: BNM21042
    pdm:line_code: BNM
    pdm:Emission Code: 5
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:California Proposition 65 Required: Yes
    pdm:Product Type: Automatic Transmission Master Repair Kit
    pdm:Category: Transmission
    pdm:Sub Category: Service Kits
    pdm:part type: Automatic Transmission Shift Kit
    $376.95
  • BNM30228

    B&M

    Part #: 30228

    BNM30228

    Engine Make: B&M Performance
    pdm:Gasket Included: Yes
    pdm:Emission Code: 5
    pdm:Automotive Item Grade: High Performance
    pdm:Warning: California Proposition 65
    pdm:Brand: B&M
    pdm:California Proposition 65 Required: Yes
    pdm:line_code: BNM
    pdm:Product Type: Automatic Transmission Valve Body Kit
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:internal_sku: BNM30228
    pdm:Instructions Included: Yes
    pdm:Manual Control: Partial
    pdm:Category: Transmission
    pdm:part type: Automatic Transmission Shift Kit
    pdm:Sub Category: Service Kits
    $162.95
  • BNM30229

    B&M

    Part #: 30229

    BNM30229

    Engine Make: B&M Performance
    pdm:Brand: B&M
    pdm:Product Type: Automatic Transmission Master Repair Kit
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:Emission Code: 5
    pdm:California Proposition 65 Required: Yes
    pdm:Warning: California Proposition 65
    pdm:Filter Included: Yes
    pdm:Gasket Included: Yes
    pdm:Bands: Included
    pdm:line_code: BNM
    pdm:Drain Plug Included: Yes
    pdm:internal_sku: BNM30229
    pdm:Category: Transmission
    pdm:part type: Automatic Transmission Shift Kit
    pdm:Sub Category: Service Kits
    $449.95
  • BNM30262

    B&M

    Part #: 30262

    BNM30262

    Engine Make: B&M Performance
    pdm:Brand: B&M
    pdm:Emission Code: 5
    pdm:Automotive Item Grade: High Performance
    pdm:Gasket Included: Yes
    pdm:line_code: BNM
    pdm:Instructions Included: Yes
    pdm:internal_sku: BNM30262
    pdm:Product Type: Automatic Transmission Valve Body Kit
    pdm:Warning: California Proposition 65
    pdm:California Proposition 65 Required: Yes
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:Category: Transmission
    pdm:part type: Automatic Transmission Shift Kit
    pdm:Sub Category: Service Kits
    $69.25
  • BNM30287

    B&M

    Part #: 30287

    BNM30287

    Engine Make: B&M Performance
    pdm:Brand: B&M
    pdm:California Proposition 65 Chemical Name: Lead
    pdm:California Proposition 65 Chemical Name: Chromium (hexavalent compounds)
    pdm:California Proposition 65 Required: Yes
    pdm:Material: Steel Reinforced Thermoplastic
    pdm:Color: Silver and Black
    pdm:Product Type: Kickdown Cable
    pdm:Connector Type: Swivel and Extender
    pdm:Warning: California Proposition 65
    pdm:Emission Code: 5
    pdm:internal_sku: BNM30287
    pdm:line_code: BNM
    pdm:part type: Automatic Transmission Kickdown Cable
    pdm:Sub Category: Automatic Transmission Components
    pdm:Category: Transmission
    $97.19
  • BNM35265

    B&M

    Part #: 35265

    BNM35265

    Engine Make: B&M Performance
    pdm:Product Type: Automatic Transmission Valve Body Kit
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:Instructions Included: Yes
    pdm:Gasket Included: Yes
    pdm:Emission Code: 5
    pdm:Automotive Item Grade: High Performance
    pdm:Brand: B&M
    pdm:California Proposition 65 Required: Yes
    pdm:internal_sku: BNM35265
    pdm:Warning: California Proposition 65
    pdm:line_code: BNM
    pdm:Category: Transmission
    pdm:part type: Automatic Transmission Shift Kit
    pdm:Sub Category: Service Kits
    $83.35
  • BNM35498

    B&M

    Part #: 35498

    BNM35498

    Engine Make: B&M Performance
    pdm:Automotive Item Grade: High Performance
    pdm:line_code: BNM
    pdm:Product Type: Automatic Transmission Shift Lever
    pdm:Brand: B&M
    pdm:internal_sku: BNM35498
    pdm:Emission Code: 5
    pdm:California Proposition 65 Required: No
    pdm:Material: Steel
    pdm:Color: Natural
    pdm:Sub Category: Service Kits
    pdm:Category: Transmission
    $47.25
  • BNM40262

    B&M

    Part #: 40262

    BNM40262

    Engine Make: B&M Performance
    pdm:Warning: California Proposition 65
    pdm:internal_sku: BNM40262
    pdm:Product Type: Automatic Transmission Valve Body Kit
    pdm:line_code: BNM
    pdm:Gasket Included: Yes
    pdm:Emission Code: 5
    pdm:California Proposition 65 Required: Yes
    pdm:Automotive Item Grade: High Performance
    pdm:Brand: B&M
    pdm:Instructions Included: Yes
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:Manual Control: No
    pdm:part type: Automatic Transmission Shift Kit
    pdm:Category: Transmission
    pdm:Sub Category: Service Kits
    $77.75
  • BNM40497

    B&M

    Part #: 40497

    BNM40497

    Engine Make: B&M Performance
    pdm:Color: Natural
    pdm:internal_sku: BNM40497
    pdm:Brand: B&M
    pdm:Emission Code: 5
    pdm:line_code: BNM
    pdm:Automotive Item Grade: High Performance
    pdm:Product Type: Automatic Transmission Shift Lever
    pdm:California Proposition 65 Required: No
    pdm:Material: Steel
    pdm:Category: Transmission
    pdm:Sub Category: Service Kits
    $51.85
  • BNM50260

    B&M

    Part #: 50260

    BNM50260

    Engine Make: B&M Performance
    pdm:Automotive Item Grade: High Performance
    pdm:Brand: B&M
    pdm:Product Type: Automatic Transmission Valve Body Kit
    pdm:internal_sku: BNM50260
    pdm:California Proposition 65 Required: Yes
    pdm:Emission Code: 5
    pdm:Instructions Included: Yes
    pdm:line_code: BNM
    pdm:Gasket Included: Yes
    pdm:Warning: California Proposition 65
    pdm:California Proposition 65 Chemical Name: Cadmium and cadmium compounds
    pdm:Category: Transmission
    pdm:Sub Category: Service Kits
    pdm:part type: Automatic Transmission Shift Kit
    $83.35

  • Transtar Industries

    Part #: 22008E

    D.K. A518 90-97 22008E

    Engine Make: Transtar Industries
    $294.84

  • Transtar Industries

    Part #: 22008G

    D.K. A518 98-03 22008G

    Engine Make: Transtar Industries
    $319.66

  • Scat Enterprises

    Part #: FP-302-157

    FLEXPLATE FP-302-157

    Engine Make: Scat Enterprises
    $74.00
  • FLEXPLATE FP-302E-SFI

    Scat Enterprises

    Part #: FP-302E-SFI

    FLEXPLATE FP-302E-SFI

    Engine Make: Scat Enterprises
    $93.00

  • Scat Enterprises

    Part #: FP-302L-SFI

    FLEXPLATE FP-302L-SFI

    Engine Make: Scat Enterprises
    $93.00
  • FLEXPLATE FP-350L-153-SFI

    Scat Enterprises

    Part #: FP-350L-153-SFI

    FLEXPLATE FP-350L-153-SFI

    Engine Make: Scat Enterprises
    $74.00

  • Scat Enterprises

    Part #: FP-454-SFI

    FLEXPLATE FP-454-SFI

    Engine Make: Scat Enterprises
    $93.00

  • Scat Enterprises

    Part #: FP-454L-SFI

    FLEXPLATE FP-454L-SFI

    Engine Make: Scat Enterprises
    $93.00

  • Scat Enterprises

    Part #: FP-455-SFI

    FLEXPLATE FP-455-SFI

    Engine Make: Scat Enterprises
    $93.00

  • Scat Enterprises

    Part #: FP-460A

    FLEXPLATE FP-460A

    Engine Make: Scat Enterprises
    $74.00

  • Scat Enterprises

    Part #: FP-460A-SFI

    FLEXPLATE FP-460A-SFI

    Engine Make: Scat Enterprises
    $93.00

Why Buy Transmission Kits & Rear-End Kits from Northern Auto Parts?

Northern Auto Parts is your ultimate source for high-grade transmission overhaul kits and rear-end parts, including transmission and rear-end parts that cater to most makes and models. Our transmission flexplates and other components offer unmatched durability, making them ideal for both maintenance and high-performance applications. Elevate your vehicle's efficiency and power with our specialized parts, guaranteeing a blend of performance and longevity for any drivetrain project.

Why Buy Vehicle Parts from Northern Auto Parts?

40+ Years Experience
Northern Auto Parts has been providing auto parts for all makes and models for over 40 years. We have everything you need to keep your car, truck, or SUV running in peak condition.

Trusted Source for Name-Brand Parts
We carry a wide variety of name-brand components, so you can find the exact parts you need to repair or replace anything on your vehicle. From engine components to exterior parts, we have a vast selection to choose from.

Competitive Pricing
We are committed to affordability without compromising on quality. Our prices provide the best value for your money, whether you’re an automotive technician or a DIY enthusiast.