Skip to content
Free Shipping on Orders greater than $90.00.
Free Shipping on Orders greater than $90.00.

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.

Filters

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...

View full details
$69.01 - $69.01
$69.01
$69.01 - $69.01
$69.01
Overhaul Kit Transtec without Rear Metal Clad Seal TH400 M40 3L80
$59.07 - $59.07
$59.07
$59.07 - $59.07
$59.07

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...

View full details
$59.07 - $59.07
$59.07
$59.07 - $59.07
$59.07
$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 ...

View full details
$50.81 - $50.81
$50.81
$50.81 - $50.81
$50.81
Band Borg Warner Rear Reverse (New Design, Smooth Lining) TH400 4L80E 3L80 M40 MT1
$47.98 - $47.98
$47.98
$47.98 - $47.98
$47.98

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...

View full details
$47.98 - $47.98
$47.98
$47.98 - $47.98
$47.98
SHIFT KIT SUPERIOR WTH PLATE TH400 - Suntransmissions
Sold Out
$47.06 - $47.06
$47.06
$47.06 - $47.06
$47.06

Shift Kit With Plate Superior TH400

Out of stock

Transgo SHIFT KIT Valve Body Repair Kit with Plate for TH400 1965/Up This repair kit is designed to address and rectify common issues associated wi...

View full details
$47.06 - $47.06
$47.06
$47.06 - $47.06
$47.06
Sold Out
Notify When Available
Washer Kit TH400 M40 3L80
$21.00 - $21.00
$21.00
$21.00 - $21.00
$21.00

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...

View full details
$21.00 - $21.00
$21.00
$21.00 - $21.00
$21.00
BUSHING CASE SONNAX TH400, 4L80E 4L85E - Suntransmissions
$20.79 - $20.79
$20.79
$20.79 - $20.79
$20.79

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...

View full details
$20.79 - $20.79
$20.79
$20.79 - $20.79
$20.79
MODULATOR DUAL RED STRIPE TH400 4T60E 4T65E
Sold Out
$19.74 - $19.74
$19.74
$19.74 - $19.74
$19.74

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...

View full details
$19.74 - $19.74
$19.74
$19.74 - $19.74
$19.74
Sold Out
Notify When Available
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 ...

View full details
$6.13 - $6.13
$6.13
$6.13 - $6.13
$6.13
FILTER FLAT BRASS SCREEN TH400, AT540, AT545 - Suntransmissions
$6.02 - $6.02
$6.02
$6.02 - $6.02
$6.02

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...

View full details
$6.02 - $6.02
$6.02
$6.02 - $6.02
$6.02
PAN GASKET FARPACK TH400 - Suntransmissions
$5.33 - $5.33
$5.33
$5.33 - $5.33
$5.33

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...

View full details
$5.33 - $5.33
$5.33
$5.33 - $5.33
$5.33
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 ...

View full details
$4.58 - $4.58
$4.58
$4.58 - $4.58
$4.58
FILTER FELT SCREEN TH400 - Suntransmissions
$3.93 - $3.93
$3.93
$3.93 - $3.93
$3.93

Filter Felt Screen Th400

in stock

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

View full details
$3.93 - $3.93
$3.93
$3.93 - $3.93
$3.93
STEEL PLATE INTERMEDIATE CLUTCH FLAT 0.100IN. TH400 - Suntransmissions
$3.38 - $3.38
$3.38
$3.38 - $3.38
$3.38

Steel Plate Intermediate Clutch Flat 0.100in. TH400

in stock

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

View full details
$3.38 - $3.38
$3.38
$3.38 - $3.38
$3.38
FRICTION PLATE ALLOMATIC INTERMEDIATE TH400, 4L80E - Suntransmissions
$3.38 - $3.38
$3.38
$3.38 - $3.38
$3.38

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...

View full details
$3.38 - $3.38
$3.38
$3.38 - $3.38
$3.38
FRICTION PLATE RAYBESTOS INTERMEDIATE .080 [4] (WAVED) TH400, 3L80, M40, TH425
Sold Out
$3.14 - $3.14
$3.14
$3.14 - $3.14
$3.14

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

Out of stock

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

View full details
$3.14 - $3.14
$3.14
$3.14 - $3.14
$3.14
Sold Out
Notify When Available
FRICTION PLATE ALLOMATIC INTERMEDIATE .080 [4] (WAVED) TH400, 3L80, M40, TH425
Sold Out
$2.84 - $2.84
$2.84
$2.84 - $2.84
$2.84

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 ...

View full details
$2.84 - $2.84
$2.84
$2.84 - $2.84
$2.84
Sold Out
Notify When Available
Metal Clad Seal Pump TH350, AT540, TH400, PG, TH250, TH325, ST300, AT545, TH350C
$2.74 - $2.74
$2.74
$2.74 - $2.74
$2.74

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...

View full details
$2.74 - $2.74
$2.74
$2.74 - $2.74
$2.74
Direct clutch steel plate .090in 14-tooth for TH400 4L80E AT540 (34305C)
$2.61 - $2.61
$2.61
$2.61 - $2.61
$2.61

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...

View full details
$2.61 - $2.61
$2.61
$2.61 - $2.61
$2.61
4L80E TH400 forward & direct clutch waffle friction plate – face view (42 teeth, 0.080in)
$2.54 - $2.54
$2.54
$2.54 - $2.54
$2.54

4L80E TH400 Forward & Direct Clutch Friction Plate – Waffle

in stock

Need a forward/direct clutch friction plate for your 4L80E or TH400? This Allomatic waffle (grooved) friction plate fits the forward and direct clu...

View full details
$2.54 - $2.54
$2.54
$2.54 - $2.54
$2.54
FRICTION PLATE ALLOMATIC FOWARD AND DIRECT CLUTCH TH400, 4L80E
$2.39 - $2.39
$2.39
$2.39 - $2.39
$2.39

Friction Plate Allomatic Foward And Direct Clutch TH400 4L80E

in stock

FRICTION PLATE ALLOMATIC FOWARD AND DIRECT CLUTCH TH400, 4L80E USES 11 FRICTION PLATES Transmissions: TH400 (M40,3L80) 2000, 4L80E (MT1) 2000 Vehi...

View full details
$2.39 - $2.39
$2.39
$2.39 - $2.39
$2.39
4L80E TH400 forward clutch flat steel plate 0.077in – Sun Transmissions
$2.33 - $2.33
$2.33
$2.33 - $2.33
$2.33

4L80E TH400 Forward Clutch Steel Plate – Flat 0.077in

in stock

Need a forward clutch steel plate for your 4L80E or TH400? This flat steel separator plate fits the forward clutch pack in GM TH400 and 4L80E trans...

View full details
$2.33 - $2.33
$2.33
$2.33 - $2.33
$2.33
Metal Clad Seal Extension Housing National with Flange TH350 TH250 TH700 4L60E C4 C5 PG TH180 TH200
$2.23 - $2.23
$2.23
$2.23 - $2.23
$2.23

Metal Clad Seal Extension Housing National with Flange TH350 TH250 TH700 4L60E C4 C5 PG TH180 TH200

in stock

Metal Clad Seal Extension Housing National with Flange TH350 TH250 TH700 4L60E C4 C5 PG TH180 TH200 Transmissions: TH700-R4 (TH700R4) 1982-UP, ST3...

View full details
$2.23 - $2.23
$2.23
$2.23 - $2.23
$2.23
BUSHING PUMP BABBIT TH180C 4L30E 325 TH250C TH350C TH400 AT540 AT545 POWERGLIDE ST300
$2.04 - $2.04
$2.04
$2.04 - $2.04
$2.04

Bushing Pump BABBIT TH180C 4L30E 325 TH250C TH350C TH400 AT540 AT545 POWERGLIDE ST300

in stock

BUSHING PUMP BABBIT TH180C 4L30E 325 TH250C TH350C TH400 AT540 AT545 POWERGLIDE ST300 Transmissions 4L30E (ML4) – 1962-UP AT540 (AT543) – 1962-U...

View full details
$2.04 - $2.04
$2.04
$2.04 - $2.04
$2.04

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare