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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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Sprag Intermediate HD 34 Element TH400 4L80E
$113.72 - $113.72
$113.72
$113.72 - $113.72
$113.72

Sprag Intermediate HD 34 Element TH400 4L80E

Only 1 left!

Sprag Intermediate HD 34 Element TH400 4L80E Transmissions: TH400 (M40,3L80) 1964-UP, 4L80E (MT1) 1991-UPOEM Number: 8633173 Vehicle ASTON MARTIND...

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$113.72 - $113.72
$113.72
$113.72 - $113.72
$113.72
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
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...

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$47.98 - $47.98
$47.98
$47.98 - $47.98
$47.98
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
Sprag Rear Low Clutch Roller Type FMX TH400 TH425 4L80E AOD AODE 4R70W 4R70E 4R75W 4R75E
$15.09 - $15.09
$15.09
$15.09 - $15.09
$15.09

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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$15.09 - $15.09
$15.09
$15.09 - $15.09
$15.09
$8.74 - $8.74
$8.74
$8.74 - $8.74
$8.74

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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$8.74 - $8.74
$8.74
$8.74 - $8.74
$8.74
Friction Plate Raybestos Direct and Forward Clutch High Energy [10-11] TH400 4L80E 3L80 MT1 M40
$3.62 - $3.62
$3.62
$3.62 - $3.62
$3.62

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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$3.62 - $3.62
$3.62
$3.62 - $3.62
$3.62
$2.97 - $2.97
$2.97
$2.97 - $2.97
$2.97

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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$2.97 - $2.97
$2.97
$2.97 - $2.97
$2.97
Friction Plate Raybestos Forward & Direct Clutch [10-11] TH400 TH425 4L80E 4L85E 3L80 M40
$2.75 - $2.75
$2.75
$2.75 - $2.75
$2.75

Friction Plate Raybestos Forward & Direct Clutch [10-11] TH400 TH425 4L80E 4L85E 3L80 M40

in stock

Friction Plate Raybestos Forward & Direct Clutch [10-11] TH400 TH425 4L80E 4L85E 3L80 M40 THICK .080” , 42T , OD: 5.895" Transmissions: 4L85E ...

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$2.75 - $2.75
$2.75
$2.75 - $2.75
$2.75
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...

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$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...

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$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...

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$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...

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$2.33 - $2.33
$2.33
$2.33 - $2.33
$2.33
O-Ring Front Pump (Lip Seal) TH400 TH700-R4 4L60E 4L65E 4L80E AT540
$2.06 - $2.06
$2.06
$2.06 - $2.06
$2.06

O-Ring Front Pump (Lip Seal) TH400 TH700-R4 4L60E 4L65E 4L80E AT540

in stock

O-Ring Front Pump (Lip Seal) TH400 TH700-R4 4L60E 4L65E 4L80E AT540 Transmissions: AT540 (AT543) 1970-UP, 4L65E (M32) 1997-2003, TH700-R4 (TH700R4...

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$2.06 - $2.06
$2.06
$2.06 - $2.06
$2.06
Manual lever shaft metal clad seal for GM & Allison automatics (38511)
$1.22 - $1.22
$1.22
$1.22 - $1.22
$1.22

Manual Lever Shaft Metal Clad Seal — TH350 TH400 TH700-R4 4L60E 4L80E 6L80

in stock

Need the manual lever (selector) shaft seal for a GM or Allison automatic?This is the metal clad manual-lever shaft seal that seals the manual sele...

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$1.22 - $1.22
$1.22
$1.22 - $1.22
$1.22
GM & Ford transmission filler tube boot seal (top-hat design) – Sun Transmissions
$0.76 - $0.76
$0.76
$0.76 - $0.76
$0.76

Transmission Filler Tube Boot Seal (Top Hat) – GM & Ford

in stock

Need the filler tube boot seal for your automatic transmission? This top-hat-design boot seals the dipstick filler tube where it enters the transmi...

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$0.76 - $0.76
$0.76
$0.76 - $0.76
$0.76

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