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TH400 (3L80)

Discover a comprehensive range of high-quality Automatic Transmission Parts for the TH400 (3L80) at Sun Transmissions. Our extensive selection includes everything from torque converters, transmission rebuild kits, and valve bodies to specialized components like clutch boost springs, heavy-duty input shafts, and overrun clutch hubs. Catering to both repair and performance upgrades, our products are designed to enhance durability and efficiency. Whether you're looking for molded rubber pistons, wiring harnesses, or seal and gasket kits, our inventory covers a wide spectrum of needs. Each part is meticulously crafted to ensure optimal performance and longevity, making Sun Transmissions your go-to destination for TH400 (3L80) transmission solutions.

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Friction Pack Raybestos Generation 2 Blue Plates TH400 M40 3L80 Sold Out
$216.42 - $216.42
$216.42
$216.42 - $216.42
$216.42

Friction Pack Raybestos Generation 2 Blue Plates TH400 M40 3L80

Out of stock

Friction Pack Raybestos Generation 2 Blue Plates TH400 M40 3L80 The Gen2 Blue Plate Special, the ultimate racing clutch for automatic transmissions...

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$216.42 - $216.42
$216.42
$216.42 - $216.42
$216.42
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Shift Kit Transgo Street / Racing TH400 Sold Out
$174.39 - $174.39
$174.39
$174.39 - $174.39
$174.39

Shift Kit Transgo Street Racing TH400

Out of stock

TransGo Reprogramming Kit with Gear Command for All 400 (1965-ON) The TransGo Reprogramming Kit for the TH400 transmission offers enhanced automati...

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$174.39 - $174.39
$174.39
$174.39 - $174.39
$174.39
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Reprograming Kit Transgo TH400 M40 3L80 Sold Out
$118.46 - $118.46
$118.46
$118.46 - $118.46
$118.46

Reprograming Kit Transgo TH400 M40 3L80

Out of stock

Transgo Reprogramming Kit For TH400 This comprehensive kit is designed for heavy-duty and high-performance applications, offering expert valve body...

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$118.46 - $118.46
$118.46
$118.46 - $118.46
$118.46
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Overhaul Kit Transtec without Rear Metal Clad Seal TH400 M40 3L80 TH375 TH475
$69.01 - $69.01
$69.01
$69.01 - $69.01
$69.01

Overhaul Kit Transtec without Rear Metal Clad Seal TH400 3L80 TH375 TH475

Only 1 left!

Overhaul Kit Transtec without Rear Metal Clad Seal TH400 M40 3L80 TH375 TH475 Transmissions: TH475 1965-1996, TH375 1965-1996, TH400 (M40,3L80) 19...

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$69.01 - $69.01
$69.01
$69.01 - $69.01
$69.01
Sonnax Case Saver Retainer for TH400 & '98-Earlier 4L80-E
$66.01 - $66.01
$66.01
$66.01 - $66.01
$66.01

Sonnax Case Saver Retainer TH400 4L80E M40 3L80 MT1

in stock

Sonnax Case Saver Retainer for TH400 & '98-Earlier 4L80-E The Sonnax case saver retainer 34762-10 is the only intermediate clutch retaining rin...

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$66.01 - $66.01
$66.01
$66.01 - $66.01
$66.01
Sonnax Line Pressure Booster Kit for TH400
$65.61 - $65.61
$65.61
$65.61 - $65.61
$65.61

Sonnax Line Pressure Booster Kit TH400 M40 3L80

Only 1 left!

Sonnax Line Pressure Booster Kit for TH400 The Sonnax Line Pressure Booster Kit for the TH400 transmission is designed to enhance your vehicle’s pe...

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$65.61 - $65.61
$65.61
$65.61 - $65.61
$65.61
Overhaul Kit Transtec without Rear Metal Clad Seal TH400 M40 3L80
$57.04 - $57.04
$57.04
$57.04 - $57.04
$57.04

Overhaul Kit Transtec without Rear Metal Clad Seal TH400 3L80

in stock

Overhaul Kit Transtec without Rear Metal Clad Seal TH400 M40 3L80 Transmissions: TH400 (M40,3L80) 1965-1996 Vehicle BENTLEYCorniche 1971-1996 3 SP...

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$57.04 - $57.04
$57.04
$57.04 - $57.04
$57.04
$50.81 - $50.81
$50.81
$50.81 - $50.81
$50.81

Overhaul Kit TH400

in stock

Overhaul Kit TH400 Transmissions: TH400 (M40,3L80) 1965-UPVehicleBUICKCentury 1973-1977 3 SP Electra, LeSabre 1974-1981 3 SP Regal 1969-1981 3 SP ...

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$50.81 - $50.81
$50.81
$50.81 - $50.81
$50.81
Modulator Black Red Stripe TH350 TH400 TH350C TH250 TH250C 3L80 M38 MV4 MX2 M31 M40
Sold Out
$46.89 - $46.89
$46.89
$46.89 - $46.89
$46.89

Modulator Black Red Stripe TH350 TH400 TH350C TH250 TH250C 3L80 M38 MV4 MX2 M31 M40

Out of stock

Modulator Black Red Stripe TH350 TH400 TH350C TH250 TH250C 3L80 M38 MV4 MX2 M31 M40 Adjustable Transmissions: TH350C (MX2) 1980-UP, TH250C 1980-UP...

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$46.89 - $46.89
$46.89
$46.89 - $46.89
$46.89
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Band Borg Warner Rear Reverse (New Design, Smooth Lining) TH400 4L80E 3L80 M40 MT1
$46.04 - $46.04
$46.04
$46.04 - $46.04
$46.04

Band Borg Warner Rear Reverse (New Design Smooth Lining) TH400 4L80E 3L80 M40 MT1

in stock

Band Borg Warner Rear Reverse (New Design, Smooth Lining) TH400 4L80E 3L80 M40 MT1 Transmissions: TH400 (M40,3L80) 1964-UP, 4L80E (MT1) 1991-UP OE...

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$46.04 - $46.04
$46.04
$46.04 - $46.04
$46.04
$41.63 - $41.63
$41.63
$41.63 - $41.63
$41.63

Filler Tube Assembly TH350 TH400 TH200

Only 1 left!

Filler Tube Assembly TH350 TH400 TH200 NOTE: This dipstick has a "flip-lock" style top. Transmissions: TH200 (MV9,M29,TH200C) 1976-UP, TH400 (M40,...

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$41.63 - $41.63
$41.63
$41.63 - $41.63
$41.63
Steel Pack TH400 M40 3L80 1965/95
$40.33 - $40.33
$40.33
$40.33 - $40.33
$40.33

Steel Pack TH400 M40 3L80 1965/95

in stock

Steel Pack TH400 M40 3L80 1965/95 Transmissions: TH400 (M40,3L80) 1965-1995 Vehicle BUICKCentury 1973-1977 3 SP Electra, LeSabre 1974-1981 3 SP Re...

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$40.33 - $40.33
$40.33
$40.33 - $40.33
$40.33
Friction Pack Raybestos TH400 3L80 M40 1964/90
Sold Out
$40.13 - $40.13
$40.13
$40.13 - $40.13
$40.13

Friction Pack Raybestos TH400 3L80 M40 1964/90

Out of stock

Friction Pack Raybestos TH400 3L80 M40 1964/90 Transmissions: TH400 (M40,3L80) 1964-1990 Vehicle BUICKCentury 1973-1977 3 SP Electra, LeSabre 1974...

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$40.13 - $40.13
$40.13
$40.13 - $40.13
$40.13
Sold Out
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Modulator Single Red Stripe TH350 TH350C TH400 TH250 TH250C 1969/86
$32.36 - $32.36
$32.36
$32.36 - $32.36
$32.36

Modulator Single Red Stripe TH350 TH350C TH400 TH250 TH250C 1969/86

in stock

Modulator Single Red Stripe TH350 TH350C TH400 TH250 TH250C 1969/86 AdjustableTransmissions: TH250C 1980-UP, TH250 (M31) 1969-UP, TH350C (MX2) 198...

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$32.36 - $32.36
$32.36
$32.36 - $32.36
$32.36
Output & Reaction Planetary Rebuild Kit with .750" Wide Pinion Gears 4L80E TH400 M40 3L80 MT1
$31.97 - $31.97
$31.97
$31.97 - $31.97
$31.97

Output And Reaction Planetary Rebuild Kit with .750"" Wide Pinion Gears 4L80E TH400 M40 3L80 M

in stock

Sonnax Planetary Rebuild Kit for 4L80-E, TH400 Transmissions Optimize the performance of your TH400 or '98-earlier 4L80-E transmission with the Son...

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$31.97 - $31.97
$31.97
$31.97 - $31.97
$31.97
Washer Kit TH400 M40 3L80
$25.42 - $25.42
$25.42
$25.42 - $25.42
$25.42

Washer Kit TH400 M40 3L80

in stock

Washer Kit TH400 M40 3L80 Transmissions: TH400 (M40,3L80) 1964-UP Vehicle AM GENERALH1 HUMMER 1992 3 SP 4WD V8 6.2L DIESELBENTLEYCorniche 1971-19...

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$25.42 - $25.42
$25.42
$25.42 - $25.42
$25.42
Bushing Kit TH400 M40 3L80
$19.87 - $19.87
$19.87
$19.87 - $19.87
$19.87

Bushing Kit TH400 M40 3L80

in stock

Bushing Kit TH400 M40 3L80 Transmissions: TH400 (M40,3L80) 1964-UPVehicleAM GENERALH1 HUMMER 1992 3 SP 4WD V8 6.2L DIESELBENTLEYCorniche 1971-1996...

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$19.87 - $19.87
$19.87
$19.87 - $19.87
$19.87
Sprag Intermediate (8 Roller Type) TH400 M40 3L80
$17.97 - $17.97
$17.97
$17.97 - $17.97
$17.97

Sprag Intermediate (8 Roller Type) TH400 M40 3L80

in stock

Sprag Intermediate (8 Roller Type) TH400 M40 3L80 Transmissions: TH400 (M40,3L80) 1970-UPOEM Number: 8625814 Vehicle BUICKCentury 1973-1977 3 SP E...

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$17.97 - $17.97
$17.97
$17.97 - $17.97
$17.97
$17.69 - $17.69
$17.69
$17.69 - $17.69
$17.69

Speedo Gear 37 Teeth (Red) TH350 TH350C TH400 TH700-R4 TH200 TH200C

in stock

Speedo Gear 37 Teeth (Red) TH350 TH350C TH400 TH700-R4 TH200 TH200C Transmissions: TH700-R4 (TH700R4) 1982-1993, TH700 (4L60) 1982-1993, TH400 (M...

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$17.69 - $17.69
$17.69
$17.69 - $17.69
$17.69
Solenoid Valve Body Detent Short Wire and Kickdown TH400 3L80
$17.17 - $17.17
$17.17
$17.17 - $17.17
$17.17

Solenoid Valve Body Detent Short Wire and Kickdown TH400 3L80

in stock

Solenoid Valve Body Detent Short Wire and Kickdown TH400 3L80 Transmissions: TH400 (M40,3L80) 1964-UP Vehicle AM GENERALH1 HUMMER 1992 3 SP 4WD V8...

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$17.17 - $17.17
$17.17
$17.17 - $17.17
$17.17
Sprag Rear Low Clutch Roller Type FMX TH400 TH425 4L80E AOD AODE 4R70W 4R70E 4R75W 4R75E
$15.66 - $15.66
$15.66
$15.66 - $15.66
$15.66

Sprag Rear Low Clutch Roller Type FMX TH400 TH425 4L80E AOD AODE 4R70W 4R70E 4R75W 4R75E

in stock

Sprag Rear Low Clutch Roller Type FMX TH400 TH425 4L80E AOD AODE 4R70W 4R70E 4R75W 4R75E Transmissions: 4R75W (4R75E) 2003-UP, 4R70E 2003-UP, 4R70...

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$15.66 - $15.66
$15.66
$15.66 - $15.66
$15.66
Band Front TH400 TH425
$7.56 - $7.56
$7.56
$7.56 - $7.56
$7.56

Band Front TH400 TH425

in stock

Band Front TH400 TH425 Transmissions: TH425 1966-1978, TH400 (M40,3L80) 1965-UPOEM Number: 8623123 Vehicle BUICKCentury 1973-1977 3 SP Electra, Le...

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$7.56 - $7.56
$7.56
$7.56 - $7.56
$7.56
Metal Clad Seal Pump National TH350 AT540 TH400 PG TH250 TH325 ST300 AT545 TH350C TH180
$6.13 - $6.13
$6.13
$6.13 - $6.13
$6.13

Metal Clad Seal Pump National TH350 AT540 TH400 PG TH250 TH325 ST300 AT545 TH350C TH180

in stock

Metal Clad Seal Pump National TH350 AT540 TH400 PG TH250 TH325 ST300 AT545 TH350C TH180 Transmissions: TH180 (MD3,MD2,3L30,TH180C) 1969-UP, TH325 ...

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$6.13 - $6.13
$6.13
$6.13 - $6.13
$6.13
Bushing Output Shaft (Wide) TH400 3L80 M40
$4.58 - $4.58
$4.58
$4.58 - $4.58
$4.58

Bushing Output Shaft (Wide) TH400 3L80 M40

in stock

Bushing Output Shaft (Wide) TH400 3L80 M40 Transmissions: TH400 (M40,3L80) 1964-1974OEM Number: 8623943, 8624988 Vehicle BUICKCentury 1973-1977 3 ...

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$4.58 - $4.58
$4.58
$4.58 - $4.58
$4.58

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