Transmission Kit – Cummins B Series to Tremec TR-4050


Bell housing adapter kit combining the Cummins 4BT and Tremec TR-4050.


Cummins 4BT & 6BT Adapter kit with Tremec TR4050 5 Speed

  • Brand New Tremec TR4050 5 Speed Transmission (With Warranty thru Tremec)
  • Includes the 1995 Chevy 3500 6.5 Diesel Solid flywheel clutch 12″ (Must be round edge, not square; see photos)
  • 6.16 first gear, all gears synchronized
  • Bolts to a number of Dodge & Jeep Transfer cases with 6 bolt 23 spline outputs
  • Designed to work with External Slave from the 1998 Mopar vintage vehicles
  • Bolts directly to the 1994 to 2002 Dodge Cummins flywheel housing
  • Works with 1987 to 2002 Cummins 4BT and 6BT diesel engines
  • Uses 1995 Dodge Ram 2500 Diesel starter
  • Kit# TR-00004
  • Solid Aluminum Bell Housing

Parts Included in Kit:

QTYDescriptionPart# and Location
1Tremec TR4050 Transmission(TDET17341)
1Clutch Kit04-163
1Slave CylinderQDB-220033
1Slave Cylinder FittingQDB-220046
1Shifter LeverQDB-220035
1Bell HousingQDB-220001
1Throw Out BearingQDB-220044
1Clutch Fork53006388
1Pivot BallQDB-210146
1Pivot Ball Retainer4338855
1Pilot BearingQDB-210076
1T.O. Bearing SnoutQDB-220026
2M12-1.75x40mmSHCS (Bottom trans to Bell)
4M12 Flat Washer(Bell to Trans)
2M12-1.75x70mmSHCS (Top trans to Bell)
2M12-1.75 Flange Lock Nut(Top trans to Bell)
83/8-16×1.75″SHCS (Bell to Engine)
8M10 SAE Flat WasherSmaller OD (Bell to Engine)
25/16-18×1.5″Hex Head (Snout)
25/16-18×1.25″Hex Head (Slave cylinder)
25/16 Flat Washer(Slave Cylinder)
25/16 Lock Washer(Slave Cylinder)
63/8-16×1.0″Hex Head (Clutch)
63/8 Lock Washer(Clutch)


Length from Face of Dodge flywheel housing to Transfer case mounting face: 24.5″

Weight of Kit: 225lbs

Additional information

Weight350 lbs
Dimensions48 × 40 × 28 in