Drill/Impact Driver Replacement Tool Insert for Bosch GSB 21-2 RCT/RE (MPN 1600A002V4)

Replacement tool insert designed to restore the chuck/bit-holding function of the Bosch GSB 21-2 RCT/RE professional drill/impact driver. This original-equivalent spare part fits into the tool’s front assembly to replace worn or damaged internal insert components, helping to recover secure bit retention and consistent drilling or impact-driving performance. It is intended for users performing repair or maintenance, whether in a workshop or on-site, and aims to extend the service life of the power tool by renewing a critical wear part.

Advantages

The insert is manufactured to match the form and function of the original component, providing accurate fitment and reliable engagement with standard bits. Using a replacement insert restores correct alignment and reduces wobble, improving drilling precision and impact transfer. The part enables a cost-effective repair option compared with full tool replacement and allows technicians to return a machine to service quickly. It is compact, easy to install for experienced users, and compatible with the specified Bosch drill/impact driver model.

Suitable for

Key specifications

How to use

Prior to installation, disconnect the tool from power and remove any battery or power cord. Access the front assembly according to the tool’s service instructions and remove the worn insert components. Fit the replacement insert into the assembly, ensuring correct seating and alignment with the bit-holding mechanism. Reassemble the front housing and test the tool with a suitable bit at low speed to confirm secure retention and correct rotation before normal operation. If uncertain, consult the tool’s service manual or a qualified technician for assistance.

Recommendations

Use the replacement insert to return the Bosch GSB 21-2 RCT/RE to serviceable condition when the original insert shows wear, excessive play, or poor bit retention. Perform a safety and function check after installation, and follow regular maintenance schedules to prolong service life.