DeWALT Cordless Drill Transmissions and Clutches

Fix Number

FIX12489025

Manufacturer Part Number

N470330

This gearcase assembly is a critical transmission component that houses the internal gearing responsible for transferring power from the motor to the chuck while supporting speed selection and torque output. Built to original equipment specifications, it helps ensure smooth power delivery, reliable drilling performance, and efficient operation under demanding conditions. This assembly is an ideal replacement for worn, damaged, or malfunctioning gearcases that may cause gear slippage, shifting problems, excessive noise, or reduced performance, helping restore the tool's durability and operating efficiency.

Fix Number

FIX10189077

Manufacturer Part Number

N279940

It is an authentic manufacturer-sourced component which is specially designed for DeWALT power tools. The purpose of this transmission assembly is to help transfer the drive motion to the chuck. If the original item is damaged or is missing, this will provide an identical replacement. This assembly is made of high-quality metal and is sold as an individual item. Check the diagrams for your model to ensure the correct replacement procedure. A screwdriver and a wrench set might be needed to perform this repair.

Fix Number

FIX12523149

Manufacturer Part Number

N438742

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.

Fix Number

FIX16689111

Manufacturer Part Number

N703439

Fix Number

FIX10189044

Manufacturer Part Number

N267879

Fix Number

FIX10187581

Manufacturer Part Number

N039577SV

Fix Number

FIX16688940

Manufacturer Part Number

N681261

Fix Number

FIX16686127

Manufacturer Part Number

N384357

Fix Number

FIX10189080

Manufacturer Part Number

N287494

This is an authentic DeWalt replacement part that has been sourced from the original manufacturer to be used with drill/drivers. The transmission assembly is a complete part that includes the gears that are used to adjust the speed of the drill's chuck. This item is available as an individual replacement part.

Fix Number

FIX12525777

Manufacturer Part Number

N410832