TH400 External Seal-Up Kit 3L80 THM400 TH475 Automatic Transmission Gaskets O-Rings Seals

OPT Product Code: NTP-K34900-8
$36.60
(5) Reviews: 5
TH400 External Seal-Up Kit 3L80 THM400 TH475 Automatic Transmission Gaskets O-Rings Seals

Product Details

TH400, 3L80, TH475, THM400, 3 speed automatic transmission external seal up kit, O-rings, gaskets.

Brand: Transtec

Manufacturer Part Number: DP1103

Transmission makes: GM, Buick, Cadillac, Chevrolet, GMC, Jaguar, Jeep, Oldsmobile, Pontiac, and Rolls Royce

Year range: 1964-1992

This complete external transmission seal-up kit contains the following parts:

  • Pump gasket
  • Pump O-ring
  • Bolt seals and O-rings
  • Front metal clad converter seal
  • Rear metal clad drive shaft yoke seal
  • Duraprene pan gasket
  • Dipstick tube seal
  • Governor cover gasket
  • Extension housing to case gasket
  • Manual linkage seal
  • Pump filter
  • Speedometer seals and Oring
  • Vacuum modulator Oring
  • Kickdown case connector Oring

This external seal and gasket set comes with all seals, gaskets, and o-rings to seal all external portions of your transmission. This kit is a cost effective way to get all of the seals and gaskets needed to stop your transmission from leaking. Or, if you are removing your pump, to make modifications within your transmission, this kit will allow you to reseal your pump back up when reinstalling and seal up other portions at the same time.

Additionally, you can add the following upgrades to this set:

  • Torque converter bushing
  • Extension housing bushing
  • Transmission fluid filter

These transmissions are known by multiple names, codes, and casting numbers, including: TH400, TH-400, 3L80, TH475, THM375, M40, THM400, THM-400, 3L80HD, THM425, TH425, TH-425, THM-425 Turbo-Hydramatic.

TH400 External Seal-Up Kit 3L80 THM400 TH475 Automatic Transmission Gaskets O-Rings Seals

OPT Product Code: NTP-K34900-8
$36.60

(5) Reviews: 5
21 In Stock
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Review
Seal kit came well packaged. It is also a quality kit. My only recommendation would be to add a small container of seal retainer compound or permetex to coat the outside edges of the front and rear seals.
Christian Tomlin
06/15/2023
Verified Buyer
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TH400 Seal Up Kit
Everything I needed at a great price individually would have been three times more
Kent W
04/13/2020
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Th400 seal kit
Everything I needed at a great price individually would have been three times more
Kent waido
04/11/2020
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Th400 seal kit
Was excellent kit had everything i needed, quality and fitment was good.
Bill W.
04/10/2020
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Seal-up Kit
This is a good kit just for the pump gaskets and seals alone. The pan gasket I got in this kit was of the cork rubber type. I do not use them anyway,I use the reusable type, I need mainly pump,bolt seals,and fr & rear seals so for the price you can't complain.Packaging was good,delivered pretty fast with no damage.
Al
07/24/2019
Verified Buyer
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