Part Location Diagram of N438742 DeWALT Transmission Assembly
See part 1 in the diagram
( Grid squares measure 1x1 inch )

Transmission Assembly N438742

Manufactured by:
DeWALT
ERP Number:
ERP12523149
Part Number:
N438742
Original Equipment Manufacturer ?
$124.62
In Stock
Delivers in 3-5 Business Days!

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Product Description

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Maintain the power and performance of your drill with this transmission assembly, a critical gearbox component that transfers power from the motor to the chuck while providing the speed and torque needed for drilling and fastening applications. A worn or damaged transmission can cause slipping, loss of torque, or speed selection issues, making replacement an effective way to restore proper tool operation. Designed as a complete OEM replacement assembly, it helps return your drill to smooth, reliable performance. Refer to your tool's parts diagram or service manual to confirm the correct application before installation. Sold individually.

Troubleshooting

This part works with the following brands:
  • DeWALT
This part works with the following products:
  • Electric Drill
  • Cordless Drill

Questions & Answers

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Transmission
Clifton For model number Dcd791 - December 26, 2023

Hello Clifton, Thank you for your inquiry. We show the compatible transmission assembly as part# N438742. We hope this helps with your repair.

eReplacementParts Team
December 26, 2023

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I'm looking for the gear wheel spurs that are located in the transmission. I need one of the medium gears and 2 of the smaller gears
Joey For model number Dcd791 - January 5, 2024

Hello Joey, thank you for your question. We find only the complete transmission N438742 but not the individual gears. Good luck with this repair.

eReplacementParts Team
January 5, 2024

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Model Cross Reference

This part works with the following models:
ERP Number: ERP12523149
Manufacturer Part Number: N438742
Brand Model Number Description
DeWALT DCD791B Hammer Drill - 20v Max Brushless Cordless Compact 1/2-Inch (13mm) Drill/Driver
DeWALT DCD791B-B3 Hammer Drill - 20v Max Brushless Dd Bare
DeWALT DCD791D2 Hammer Drill - 20v Max Brushless Cordless Compact 1/2-Inch (13mm) Drill/Driver
DeWALT DCD791D2-AR Electric Drill - 20v Max Brushless Dd Kit-
DeWALT DCD791D2-B2 Electric Drill - 20v Max Brushless Dd Kit-
DeWALT DCD791D2-B2C Electric Drill - 20v Max Brushless Dd Kit-
DeWALT DCD791D2-B3 Electric Drill - 20v Max Brushless Dd Kit-
DeWALT DCD791D2-BR Electric Drill - 20v Max Brushless Dd Kit-
DeWALT DCD791D2R Cordless Drill - Cordless Drill/Driver
DeWALT DCD792B Cordless Drill - 20v Max Xr Tl Com Dd
DeWALT DCD792D2 Cordless Drill - 20v Max Xrtool Tool Connect Drill/Driver