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Transtar Torque Converter A1-GM55
  • Transtar Torque Converter A1-GM55
  • Transtar Torque Converter A1-GM55
  • Transtar Torque Converter A1-GM55
  • Transtar Torque Converter A1-GM55
  • Transtar Torque Converter A1-GM55

TranstarTorque ConverterPart #: A1-GM55

$239.23 $75.00 Core
Call for Availability:  +1 (833) 363-1938
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Description & Specs

A torque converter is a type of fluid coupling that transfers rotating power from a prime mover, like an internal combustion engine, to a rotating driven load. In a vehicle with an automatic transmission, the torque converter connects the power source to the load. It is usually located between the engine's flexplate and the transmission. The equivalent location in a manual transmission would be the mechanical clutch. The main characteristic of a torque converter is its ability to increase torque when the output rotational speed is so low that it allows the fluid coming off the curved vanes of the turbine to be deflected off the stator while it is locked against its one-way clutch, thus providing the equivalent of a reduction gear. This is a feature beyond that of the simple fluid coupling, which can match rotational speed but does not multiply torque, thus reduces power.

Torque Converter; Remanufactured, 12.185" Body Diameter, Slotted Hub Type, 3 Mounts, Stepped Pads Mount Type, 11" Bolt Circle, 1.7" Pilot Outside Diameter, No Ring Gear, VJCX Sticker Codes, Medium/Low Stall, 30 Turbine Splines, Lock-Up

Name Specs
Billet CoverNo
Body Diameter Inches12.185
Body Diameter mm309.5
Bolt Circle Inches11
Bolt Radius Inches5.5
Codes StickerVJCX
Cooling ShroudNo
Dimple PitchMedium High 630
Hub Internal BushingNo
Hub Length Inches2.11
Hub OD Major Inches1.747
Hub Seal GrooveNo
Hub TypeSlotted
Lock-Up UnitYes
Mount Threads10mm X 15
Mount TypeStepped Pads
Number of Mounts3
OE End Play0.013
OE Height Inches6.528
Pilot OD Major Inches1.7
Pilot TypeStraight
Pump StallMedium/Low
Stator RotationClockwise
Stator Spline Count27
Stator Sprag ConfigurationRollers
Stator Vane Count18
Turbine Internal Spline Count30
With Ring GearNo


Name Years
4L60-E2002 - 2008

Vehicle Fitment

Years Vehicle Drive Types
2004 - 2007Buick RainierAWD, RWD
2002 - 2006Chevrolet Trailblazer EXTRWD, 4WD
2002 - 2008Chevrolet TrailblazerRWD, 4WD
2004 - 2005GMC Envoy XUVRWD, 4WD
2002 - 2006GMC Envoy XLRWD, 4WD
2002 - 2008GMC EnvoyRWD, 4WD
2002 - 2004Oldsmobile BravadaAWD, RWD