Bosch 2606316226 — Pinion gear (genuine Bosch)

Keep your Bosch drill running like new with the genuine Bosch pinion gear, part number 2606316226. This is the small, precision-machined metal drive pinion that sits in the tool’s gearbox and mates with the gearbox train to transfer motor torque to the chuck. It’s made to Bosch’s original tolerances and metallurgy so tooth profile and shaft fit match the factory parts.

Why you’d replace it

A worn, chipped or noisy pinion produces grinding, slipping under load, rough chuck rotation or loss of torque. Replacing the worn pinion with this Bosch part restores smooth gear meshing and extends life of the surrounding gears and the gearbox.

Example models this part is used with

This pinion is listed for use in a number of Bosch cordless drill/driver and related models, including SDI 96 and SDI 120 and various GSR (12 V and 14.4 V) series drills. It also appears in parts diagrams for specific Bosch drill model assemblies (for example parts lists that include model numbers such as 32614 (0601916460) and 32618 (0601916370)), and it is referenced in Bosch power tool parts breakdowns for other tools where the same gearbox pinion is used. Verify your tool’s parts diagram or model number against 2606316226 before ordering.

Part identifiers & fit note

Bosch part number: 2606316226 (sometimes shown in Bosch listings as 2 606 316 226). It’s a direct-fit Bosch replacement intended to drop into the original gearbox assembly without modification—made to the same profiles Bosch specifies so alignment, tooth count and shaft fit match the factory unit.

If your drill shows gear noise, reduced torque or visible tooth wear, this genuine Bosch pinion is the exact replacement component that returns the gearbox to factory-spec performance.