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THM250 Transmission parts

Transmission general data

Number of gears Transmission Type Drive ATF (full capacity) L ATF (change) L ATF type (recommended)
3 AT RWD 9,5 5,6 Dexron II

The automatic gearbox THM250 is based on the THM350. This gearbox was released in 1974 and was applied in Chevrolet cars. The THM250 was developed and designed by GM as a part of Turbo Hydra-Matic family of automatic gearboxes. When taking into consideration the internal structure of the gearbox, the THM250 is very similar to THM350, apart from the intermediate clutch package with a band adjuster.

What are you looking for?

Overhaul Kit | Friction Kit | Friction | Steel Plate | Steel Kit | Band | Solenoid Kit | Solenoid EPC | Solenoid TCC | Pump | Shaft | Drum | Valve body | Torque converter | Hub | Piston | Piston Kit | Planetary Gear | Filter | Gasket | Bushing | Seal | Bearing | Pressure Plate | Stator | Differential | Retainer | Inhibitor Switch | Instruction manual | TOOLS & ACCESORIES | Sensor

Related transmission models or modifications of this transmission:

Generally, the THM250 was attached to small displacement engines. In 1976 this gearbox was taken out of production and was replaced by the light-duty THM200 transmission. However, the THM250 reemerged in 1979 as the THM250-C as a result of numerous issues withTHM200/200C. The 250C version had a reduced weight thanks to the use of a central gear shell applied the THM350, but with three holes to decrease flywheel mass and the low/reverse piston with eight notches.

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