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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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BUSHING CASE SONNAX TH400, 4L80E 4L85E - Suntransmissions
$22.44 - $22.44
$22.44
$22.44 - $22.44
$22.44

Bushing Case Sonnax TH400 4L80E 4L85E

in stock

BUSHING CASE SONNAX "NO WALK OUT" TH400, 4L80E, 4L85E The OE case bushing in vehicles with a GM THM-400, 4L80-E and 4L85-E transmissions tends to w...

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$22.44 - $22.44
$22.44
$22.44 - $22.44
$22.44
Solenoid Valve Body Detent Short Wire and Kickdown TH400 3L80
$21.94 - $21.94
$21.94
$21.94 - $21.94
$21.94

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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$21.94 - $21.94
$21.94
$21.94 - $21.94
$21.94
MODULATOR DUAL RED STRIPE TH400 4T60E 4T65E Sold Out
$21.31 - $21.31
$21.31
$21.31 - $21.31
$21.31

Modulator Dual Red Stripe TH400 4T60E 4T65E

Out of stock

MODULATOR DUAL RED STRIPE TH400 4T60E 4T65E Transmissions: TH400 (M40,3L80) 1964-UP, 4T60E (M13) 1997-UP, 4T65E (MN7,MN3,M76) 1997-UPOEM Number: 8...

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$21.31 - $21.31
$21.31
$21.31 - $21.31
$21.31
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$19.90 - $19.90
$19.90
$19.90 - $19.90
$19.90

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 (M4...

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$19.90 - $19.90
$19.90
$19.90 - $19.90
$19.90
Sprag Intermediate (8 Roller Type) TH400 M40 3L80
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$19.40 - $19.40
$19.40
$19.40 - $19.40
$19.40

Sprag Intermediate (8 Roller Type) TH400 M40 3L80

Out of stock

This 8-roller sprag replaces the intermediate one-way clutch in TH400/M40/3L80 transmissions, restoring proper intermediate gear holding. Signs You...

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$19.40 - $19.40
$19.40
$19.40 - $19.40
$19.40
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Sprag Rear Low Clutch Roller Type FMX TH400 TH425 4L80E AOD AODE 4R70W 4R70E 4R75W 4R75E
$16.30 - $16.30
$16.30
$16.30 - $16.30
$16.30

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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$16.30 - $16.30
$16.30
$16.30 - $16.30
$16.30
Band Raybestos Front TH400 3L80 M40
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$15.05 - $15.05
$15.05
$15.05 - $15.05
$15.05

Band Raybestos Front TH400 3L80 M40

Out of stock

Band Raybestos Front TH400 3L80 M40 Transmissions: TH400 (M40,3L80) 1964-UP Vehicle AM GENERALH1 HUMMER 1992 3 SP 4WD V8 6.2L DIESELBENTLEYCornich...

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$15.05 - $15.05
$15.05
$15.05 - $15.05
$15.05
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$9.83 - $9.83
$9.83
$9.83 - $9.83
$9.83

Valve Body Checkball Package Various Transmissions

in stock

Valve Body Checkballs – Set of 10 This set includes 10 high-performance checkballs (.250" size) made from durable, wear-resistant imidized plastic....

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$9.83 - $9.83
$9.83
$9.83 - $9.83
$9.83
Band Front TH400 TH425
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$9.56 - $9.56
$9.56
$9.56 - $9.56
$9.56

Band Front TH400 TH425

Out of 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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$9.56 - $9.56
$9.56
$9.56 - $9.56
$9.56
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FILTER FLAT BRASS SCREEN TH400, AT540, AT545 - Suntransmissions
$7.15 - $7.15
$7.15
$7.15 - $7.15
$7.15

Filter FLAT BRASS SCREEN TH400 AT540 AT545

in stock

FILTER FLAT BRASS SCREEN TH400, AT540, AT545 Transmissions: AT540 1964-UP, AT545 1964-UP, TH400 1964-UPOEM Number: 6437741VehicleBENTLEYCorniche 1...

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$7.15 - $7.15
$7.15
$7.15 - $7.15
$7.15
Metal Clad Seal Pump National TH350 AT540 TH400 PG TH250 TH325 ST300 AT545 TH350C TH180
$6.61 - $6.61
$6.61
$6.61 - $6.61
$6.61

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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$6.61 - $6.61
$6.61
$6.61 - $6.61
$6.61
PAN GASKET FARPACK TH400 - Suntransmissions
$6.00 - $6.00
$6.00
$6.00 - $6.00
$6.00

Farpak TH400 Pan Gasket

in stock

PAN GASKET FARPACK TH400 Transmissions: TH400 (M40,3L80) 1964-UPOEM Number: 8655625VehicleAM GENERALH1 HUMMER 1992 3 SP 4WD V8 6.2L DIESELBENTLEY...

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$6.00 - $6.00
$6.00
$6.00 - $6.00
$6.00
Bushing Output Shaft (Wide) TH400 3L80 M40
$5.43 - $5.43
$5.43
$5.43 - $5.43
$5.43

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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$5.43 - $5.43
$5.43
$5.43 - $5.43
$5.43
FILTER FELT SCREEN TH400 - Suntransmissions
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$4.24 - $4.24
$4.24
$4.24 - $4.24
$4.24

Filter Felt Screen Th400

Out of stock

Filter Felt Screen TH400Transmissions: TH400 1976-UPOEM Number: 86437741, 6438348 Vehicle BENTLEYCorniche 1971-1996 3 SP Eight 1984-1992 3 sp V8, ...

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$4.24 - $4.24
$4.24
$4.24 - $4.24
$4.24
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Friction Plate Raybestos Direct and Forward Clutch High Energy [10-11] TH400 4L80E 3L80 MT1 M40
$4.07 - $4.07
$4.07
$4.07 - $4.07
$4.07

Friction Plate Raybestos Direct and Forward Clutch High Energy TH400 4L80E 3L80 MT1 M40

in stock

Friction Plate Raybestos Direct and Forward Clutch High Energy [10-11] TH400 4L80E 3L80 MT1 M40 Transmissions: 4L80E (MT1) 1991-UP, TH400 (M40,3L8...

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$4.07 - $4.07
$4.07
$4.07 - $4.07
$4.07
STEEL PLATE INTERMEDIATE CLUTCH FLAT 0.100IN. TH400 - Suntransmissions
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$4.01 - $4.01
$4.01
$4.01 - $4.01
$4.01

Steel Plate Intermediate Clutch Flat 0.100in. TH400

Out of stock

STEEL PLATE INTERMEDIATE CLUTCH FLAT 0.100IN. TH400 Transmissions: TH400 (M40,3L80) 1964-UPOEM Number: 8655621 Vehicle AM GENERALH1 HUMMER 1992 3 ...

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$4.01 - $4.01
$4.01
$4.01 - $4.01
$4.01
Sold Out
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Friction Plate Raybestos Forward & Direct Clutch [10-11] (Waffle) TH400 M40 3L80
$3.81 - $3.81
$3.81
$3.81 - $3.81
$3.81

Friction Plate Raybestos Forward & Direct Clutch [10-11] (Waffle) TH400 M40 3L80

in stock

Friction Plate Raybestos Forward & Direct Clutch [10-11] (Waffle) TH400 M40 3L80 THICK .080”, 42T , OD: 5.895" Transmissions: TH400 (M40,3L80)...

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$3.81 - $3.81
$3.81
$3.81 - $3.81
$3.81
FRICTION PLATE ALLOMATIC INTERMEDIATE TH400, 4L80E - Suntransmissions
$3.81 - $3.81
$3.81
$3.81 - $3.81
$3.81

Friction Plate Allomatic Intermediate TH400 4L80E

in stock

FRICTION PLATE ALLOMATIC INTERMEDIATE TH400, 4L80E Transmissions: 4L80E (4L85E) 1964-1990, TH400 1964-1990 Vehicle AM GENERALH1 HUMMER 1993-2005 4...

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$3.81 - $3.81
$3.81
$3.81 - $3.81
$3.81
Bushing Extension Housing (1.995in OD) TH400 M40 3L80
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$3.78 - $3.78
$3.78
$3.78 - $3.78
$3.78

Bushing Extension Housing (1.995in OD) TH400 M40 3L80

Out of stock

Bushing Extension Housing (1.995in OD) TH400 M40 3L80 Long 1 1/2” Transmissions: TH400 (M40,3L80) 1964-UP Vehicle AM GENERALH1 HUMMER 1992 3 SP 4W...

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$3.78 - $3.78
$3.78
$3.78 - $3.78
$3.78
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FRICTION PLATE RAYBESTOS INTERMEDIATE .080 [4] (WAVED) TH400, 3L80, M40, TH425
$3.53 - $3.53
$3.53
$3.53 - $3.53
$3.53

Friction Plate Raybestos Intermediate .080 (Waved) TH400 3L80 M40 TH425

in stock

FRICTION PLATE RAYBESTOS INTERMEDIATE .080 [4] (WAVED) TH400, 3L80, M40, TH425 THICK .080” , 47T , OD: 6.560" Transmissions: TH425 1964-UP, TH400 ...

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$3.53 - $3.53
$3.53
$3.53 - $3.53
$3.53
Metal Clad Seal Pump TH350, AT540, TH400, PG, TH250, TH325, ST300, AT545, TH350C
$3.24 - $3.24
$3.24
$3.24 - $3.24
$3.24

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

in stock

Metal Clad Seal Pump TH350, AT540, TH400, PG, TH250, TH325, ST300, AT545, TH350C Transmissions: ST300 1964-1969, PG (POWERGLIDE,M35) 1962-1973, AT...

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$3.24 - $3.24
$3.24
$3.24 - $3.24
$3.24
$3.20 - $3.20
$3.20
$3.20 - $3.20
$3.20

Metal Clad Seal Extension Housing (Large) (W/O Boot) 2.705in OD TH400

in stock

Metal Clad Seal Extension Housing (Large) (Without Boot) TH400 M40 3L80 MT1 MN8  2.705” OD, 1.829” ID (Truck Type) (Without Boot) Transmissions: 4...

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$3.20 - $3.20
$3.20
$3.20 - $3.20
$3.20
FRICTION PLATE ALLOMATIC INTERMEDIATE .080 [4] (WAVED) TH400, 3L80, M40, TH425
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$3.19 - $3.19
$3.19
$3.19 - $3.19
$3.19

Friction Plate Allomatic Intermediate .080 (Waved) TH400 3L80 M40 TH425

Out of stock

FRICTION PLATE ALLOMATIC INTERMEDIATE .080 [4] (WAVED) TH400, 3L80, M40, TH425 THICK .080” , 47T , OD: 6.560" Transmissions: TH425 1964-UP, TH400 ...

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$3.19 - $3.19
$3.19
$3.19 - $3.19
$3.19
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Direct clutch steel plate .090in 14-tooth for TH400 4L80E AT540 (34305C)
$3.10 - $3.10
$3.10
$3.10 - $3.10
$3.10

Direct Clutch Steel Plate .090in 14-Tooth — TH400 4L80E AT540, 4th & Forward

in stock

Need a .090in direct clutch steel plate for a TH400 or 4L80E? This is a 14-tooth direct-clutch steel plate (.090in thick) for the 4th and forward c...

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$3.10 - $3.10
$3.10
$3.10 - $3.10
$3.10

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