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More Information for RETECH UMT428M
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RETECH UMT428M Specifications
Transfer Case CodeBW4405
Speedometer Typew/ Speedometer Hole
Shift TypeElectric
FinishMedia Blasted Natural Finish
Position Sensor Typew/ Front and Rear Sensor Holes
Front Yoke TypeCup
Rear Output TypeCircular Flange
Transfer Case ManufacturerBorg Warner
Transfer Case Assembly, With Motor
Transfer case assemblies include the gasket, studs (if required) and motor if specified.

ReTech tests every transfer case before it leaves the factory with a state-of-the-art transfer case tester to recreate actual driving conditions and analyze performance. This final test ensures a quality product is received by the customer.
  • 100% Inspection of case halves for cracks, stripped threads, and internal wear
  • 100% Inspection of all internal parts, including chain stretch and main shaft straightness
  • 100% Viscous clutch torque testing
  • 100% Spin test procedure for shift-ability and noise
  • 100% New seals
  • All bearings certified to manufacturers specifications
  • OEM cores are processed as individual units throughout the tear down and assembly process
  • Cores cleaned using our Hydro Blast cleaning and rinse process
  • All case halves and many internal parts are blasted in zinc cut wire to exceed OE appearance specifications
  • Expert aluminum case welding if required
  • All case halves wet sanded to ensure perfect mating surfaces
  • Loctite gasket eliminator and primer used to seal all aluminum mating surfaces
  • Air pressure leak down test used to ensure component is free of leaks
  • All units are shipped with new mounting studs (where applicable)
  • Packaged and shipped in hard plastic reusable dunnage for ultimate protection

Note: to receive full core credit, transfer case core returns must come back whole and assembled.

Additional Resources

Read this notice prior to installation
OEM / Interchange Numbers: F67ARA, F77AGA

RETECH Warranty Information:
12 months/12,000 miles