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

in 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
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
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
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...

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$2.74 - $2.74
$2.74
$2.74 - $2.74
$2.74
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...

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$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...

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$2.04 - $2.04
$2.04
$2.04 - $2.04
$2.04
Metal Clad Seal Extension Housing with Flange TH350 TH250 TH700 4L60E C4 C5 PG TH180 TH200 AOD
$1.45 - $1.45
$1.45
$1.45 - $1.45
$1.45

Metal Clad Seal Extension Housing with Flange (Small) TH350 TH400 TH700 4L60E C4 C5 PG TH180 TH200 AOD

in stock

Metal Clad Seal Extension Housing with Flange (Small) TH350 TH250 TH700 4L60E C4 C5 PG TH180 TH200 AOD  Transmissions: L3N71B 1971-1987, TH700-R4 ...

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$1.45 - $1.45
$1.45
$1.45 - $1.45
$1.45
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
Metal Clad Seal Speedometer Shaft TH350 TH400 TH125 TH180 TH700-R4 TH200C A904 TH440 PG
$0.89 - $0.89
$0.89
$0.89 - $0.89
$0.89

Metal Clad Seal Speedometer Shaft TH350 TH400 TH125 TH180 TH700-R4 TH200C A904 TH440 PG

in stock

Metal Clad Seal Speedometer Shaft TH350 TH400 TH125 TH180 TH700-R4 TH200C A904 TH440 PG Transmissions: TH400 (M40,3L80) 1964-UP, TH325-4L 1979-198...

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$0.89 - $0.89
$0.89
$0.89 - $0.89
$0.89

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