TH425 Rebuild Kit TH-425 Automatic Transmission Master Overhaul Banner Set Cadillac Oldsmobile

OPT Product Code: OPT-TH425-RB
$229.99
(5) Reviews: 1
TH425 Rebuild Kit TH-425 Automatic Transmission Master Overhaul Banner Set Cadillac Oldsmobile

Product Details


Overhaul rebuild kit for the GM TH425 automatic transmission – Stock, heavy duty, or high performance

Application specifics:

  • Transmission make: Cadillac, GM, GMC, Oldsmobile
  • Transmission model: THM425, TH425, TH-425, THM-425
  • Year range: 1966-1978
  • Speeds: 3 speed automatic overdrive
  • Drivetrain type: FWD

This transmission master rebuild box kit comes with the following rebuild parts:

  • Toledo driveline overhaul gasket set
  • BorgWarner Friction clutch plates
  • Font overrun band
  • Internal fluid filter
  • Red stripe adjustable vacuum modulator
  • Pump bushing
  • Case bushing
  • Output shaft bushing

The overhaul gasket set included in this overhaul banner box kit is the highest quality available. The set includes every rubber seal, paper gasket, O-ring, sealing rings, and metal clad seals that you will need to complete your rebuild. The Toledo Driveline gasket sets are considered a premium kit, with higher quality gaskets and seals throughout.

Additionally, you can add the following upgrades to this banner box kit:

  • Raybestos steel plates*(Pictured)
  • Rear reverse band*(Pictured)
  • Transgo Shift Kit – SK-425 or 425-1 reprogramming kit
  • HD high energy friction plates
  • HP Raybestos red clutches and Alto black Kolene steel plates
  • Assembly Grease - Lubegard, Life Smart Blend, or Transjel
  • Platinum Lubegard - Insider tip: Many shops use this synthetic supplement in every freshly rebuilt transmission to keep them on the road past the warranty.

Remember to soak all of your clutches in transmission fluid for thirty minutes before you install them.

This transmission master overhaul banner box set will work well for stock, HD, and even HP uses in the following vehicles applications:

Cadillac

  • Eldorado, 1967-1978

GMC

  • Motorhome, 1973-1978

Oldsmobile

  • Toronado, 1966-1978

This transmission master rebuild kit fits the following years: 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, and 1978.

This transmission is know my multiple name and codes including: THM425, TH425, TH-425, THM-425

TH425 Rebuild Kit TH-425 Automatic Transmission Master Overhaul Banner Set Cadillac Oldsmobile

OPT Product Code: OPT-TH425-RB
$229.99

(5) Reviews: 1
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Great Response and Service
When you have an orphan car ('67 Olds Toronado) it's great to have a supplier that has great parts and knowledge of that series of transmissions. OPT has great reviews for GMC motorhome transmission parts, which is a big brother to my car. I bought a set with options and due to other plans had the shipping schedule set for my schedule. Great communication, perfect timing and when I took it to my rebuild shop I could see he recognized good quality parts.
Russ Barnes
12/31/2019
Verified Buyer
9 of 12 customers found this helpful.
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