GM 425thm transmission

1966-78 GM 425THM Parts for Sale

I can get 100's of additional parts for these transmissions that I don't yet have listed. E-mail me with a list of other parts you may need for these. If I have them (or can get them) I will list them for you.

ATTENTION International Customers

If you want parts shipped to International addresses you must fill out the International Shipping Cost Request form INSTEAD of clicking on "Add to Cart" so I can quote International Shipping Rates

I will combine shipping if you order more than one item.
PayPal will add each item's shipping charges, but I will refund excess shipping charges based on how I can combine items to minimize shipping costs. Sturdiness of parts as well as size and weight may impact how parts can be combined, but I will try to get the costs as low as practical for you.

Parts to be shipped from Belleville, MI AFTER received from supplier(s) (which can take a week or more)

Click on category below to jump to that section of this page

Overhaul Kits/Rebuild Kits
Bands
Filters
Vacuum Modulators
Metal Clad Seals
Misc. Gaskets/Seals
Bushings
Pans/Dipsticks/Filler Tubes
Electrical
Pumps and Related Parts
Gears
Shafts
Valve Bodies
Governor
Other Hard Parts

Overhaul Kits/Rebuild Kits
For International Shipping Rates click here
New GM 425THM Overhaul Kit (1) sent to anywhere in the lower 48 USA states via US Postal Mail (256.00+29.75 shipping and handling)

New 425THM Less Steel Rebuild Kit (2) sent to anywhere in the lower 48 USA states via US Postal Mail (368.00+29.75 shipping and handling)

New 425THM Master Rebuild Kit (3) sent to anywhere in the lower 48 USA states via US Postal Mail (464.00+29.75 shipping and handling)

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Bands
For International Shipping Rates click here
1964-98 400THM/425THM New Front Band sent to anywhere in the lower 48 USA states via US Postal Mail (49.00+23.40 shipping and handling)

1964-98 400THM/425THM Used Front Band sent to anywhere in the lower 48 USA states via US Postal Mail (20.00+23.40 shipping and handling)

1964-98 400THM/425THM Used Rear Band sent to anywhere in the lower 48 USA states via US Postal Mail (50.00+23.40 shipping and handling)

1964-98 400THM/425THM New Rear Band sent to anywhere in the lower 48 USA states via US Postal Mail (130.00+23.40 shipping and handling)
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Filters
For International Shipping Rates click here
New 425THM Filter sent to anywhere in the lower 48 USA states via US Postal Mail (85.00+23.40 shipping and handling)

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Vacuum Modulators
For International Shipping Rates click here
1966-78 425THMM Red Stripe Modulator sent to anywhere in the lower 48 USA states via US Postal Mail (75.00+23.40 shipping and handling)

1966-78 425THM Purple Stripe Modulator (Low Vacuum 1.75" DIA) sent to anywhere in the lower 48 USA states via US Postal Mail (75.00+23.40 shipping and handling)
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Metal Clad Seals
For International Shipping Rates click here
1966-78 425THM Front Seal sent to anywhere in the lower 48 USA states via US Postal Mail (35.00+15.40 shipping and handling)

1966-78 425THM Manual Shaft Seal sent to anywhere in the lower 48 USA states via US Postal Mail (25.00+15.40 shipping and handling)
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Misc. Gaskets/Seals
For International Shipping Rates click here
1966-78 425THM Pan Gasket sent to anywhere in the lower 48 USA states via US Postal Mail (46.00+23.40 shipping and handling)

1966-78 425THM Side Cover Gasket sent to anywhere in the lower 48 USA states via US Postal Mail (46.00+23.40 shipping and handling)
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Bushings
For International Shipping Rates click here
1966-78 425THM Front Bushing sent to anywhere in the lower 48 USA states via US Postal Mail (35.00+15.40 shipping and handling)
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Pans/Dipsticks/Filler Tubes
For International Shipping Rates click here
Used 425THM Bottom Pan sent to anywhere in the lower 48 USA states via Ground Transportation (65.00+shipping and handling) Click to get a shipping quote.

Used 425THM Chain Cover sent to anywhere in the lower 48 USA states via Ground Transportation (40.00+shipping and handling) Click to get a shipping quote.

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Electrical
For International Shipping Rates click here
New 425THM 1966-67 Two Prong (for Variable Pitch Units) Electrical Case Connector sent to anywhere in the lower 48 USA states via US Postal Mail (105.00+15.40 shipping and handling)

New 425THM One Prong Electrical Case Connector sent to anywhere in the lower 48 USA states via US Postal Mail (48.00+15.40 shipping and handling)

Used 425THM detent (passing gear) solenoid sent to anywhere in the lower 48 USA states via US Postal Mail (35.00+15.40 shipping and handling)

New 425THM detent (passing gear) solenoid (may have a longer wire spliced on) sent to anywhere in the lower 48 USA states via US Postal Mail (156.00+15.40 shipping and handling)

New 425THM Variable Pitch (aka Switch Pitch) Solenoid (may have a longer wire spliced on) sent to anywhere in the lower 48 USA states via US Postal Mail (310.00+15.40 shipping and handling)

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Pumps and Related Parts
For International Shipping Rates click here
Used 425THM 1968-up Pump (this is a NON-variable pitch Pump) sent to anywhere in the lower 48 USA states via US Postal Mail (125.00+23.40 shipping and handling)
(Click to see Special Notice on this Part) Used 425THM 1968-up Pump Stator Shaft (Input Bearing Support) (this is a NON-variable pitch Pump Stator Shaft) sent to anywhere in the lower 48 USA states via US Postal Mail
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Gears
For International Shipping Rates click here
Used 425THM Front Planet Assembly sent to anywhere in the lower 48 USA states via US Postal Mail (95.00+23.40 shipping and handling)

Used 425THM Rear Planet Assembly sent to anywhere in the lower 48 USA states via US Postal Mail (95.00+23.40 shipping and handling)

Used 425THM Sun Gear sent to anywhere in the lower 48 USA states via US Postal Mail (65.00+23.40 shipping and handling)

Used 425THM Rear Ring Gear sent to anywhere in the lower 48 USA states via US Postal Mail (85.00+23.40 shipping and handling)

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Shafts
For International Shipping Rates click here
Used 425THM Intermediate (Sun Gear) Shaft sent to anywhere in the lower 48 USA states via US Postal Mail (45.00+23.40 shipping and handling)

Used 425THM Main Shaft sent to anywhere in the lower 48 USA states via US Postal Mail (45.00+23.40 shipping and handling)

Used 425THM Output Flange (Output Shaft) sent to anywhere in the lower 48 USA states via US Postal Mail (65.00+23.40 shipping and handling)

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Valve Bodies
For International Shipping Rates click here

Used 425THM 1966-67 Valve Body (for variable pitch unit) sent to anywhere in the lower 48 USA states via US Postal Mail (350.00+23.40 shipping and handling)

Used 425THM 1968-up Valve Body sent to anywhere in the lower 48 USA states via US Postal Mail (195.00+23.40 shipping and handling)

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Governor
For International Shipping Rates click here
Used 425THM Governor sent to anywhere in the lower 48 USA states via US Postal Mail (150.00+23.40 shipping and handling)

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Other Hard Parts
For International Shipping Rates click here
Used 425THM Forward Clutch Piston sent to anywhere in the lower 48 USA states via US Postal Mail (45.00+23.40 shipping and handling)

Used 425THM Case Center Support sent to anywhere in the lower 48 USA states via US Postal Mail (55.00+23.40 shipping and handling)

(Click to see Special Notice on this Part) 1968-up Used 425THM Input (Drive) Bearing Support (non-Variable Pitch {AKA non-Switch Pitch} Torque Converter) sent to anywhere in the lower 48 USA states via US Postal Mail

Used 425THM Output Bearing Support sent to anywhere in the lower 48 USA states via US Postal Mail (45.00+23.40 shipping and handling)

LAST ONE Used 1968-78 425THM Drive Chain and both Sprockets (matched set from same transmission to minimize chain noise) sent to anywhere in the lower 48 USA states via Ground Transportation (395.00+shipping and handling) Click to get a shipping quote.
Used 425THM Manual Selector Shaft (4) sent to anywhere in the lower 48 USA states via US Postal Mail (40.00+15.40 shipping and handling)
Used 425THM Transfer Plate sent to anywhere in the lower 48 USA states via Ground Transportation (125.00+shipping and handling) Click to get a shipping quote.

Sold out Used 425THM Bare Case sent to anywhere in the lower 48 USA states via Ground Transportation

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(1) Overhaul kit includes: gaskets, o'rings, lip seals, sealing rings (rotating ones only), and metal clad seals

(2) Less steel rebuild kit includes: gaskets, o'rings, lip seals, sealing rings (rotating ones only), metal clad seals, and friction clutches (but no unlined clutches)

(3) Master rebuild kit includes: gaskets, o'rings, lip seals, sealing rings (rotating ones only), metal clad seals, unlined clutches (steels) and friction clutches (but no unlined clutches)

(4) You must E-mail me a picture of your part to make sure I send you the proper one.

(Special Notice)

Due to severe disruption in the supply sources for this part, you must E-mail to me to find out about price and availability of this part. Make SURE that in your email you include 1. Name of the transmission, 2. The name of the part, 3. The year of the vehicle, 4. The model of the vehicle, 5. The engine size of the vehicle, 6. Your country, Your Postal (ZIP) Code,
AND Your Phone Number.

(Ground Shipping Cost Request)

Since
Ground Transportation prices have skyrocketed and are continually changing, I can no longer put those charges into my listings. You must fill out the form that you can access HERE. After filling it out, save it to your desktop. You can then attach it to the E-mail you send to me to find out the cost for ground transportation on heavy and/or bulky items. If you need instructions on how to save the file to your computer, click HERE. You will need Acrobat Reader to access the form. If you don't have it, you can download it for free HERE.

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