- Tools & Garage Gear
- Garage Tools & Equipment
- OTC Tools GM Water Pump Socket
OTC Tools is an affiliated Bosch Tools brand and major supplier of servicing tools and equipment. They offer this water pump socket for GM engines. Designed with a 1/2" square drive for use with a breaker bar or ratchet. This socket from OTC self-centers itself in the water pump housing allowing the tangs to fully engage the water pump for removal or installation.