Dorman 626-588 Engine Coolant Air Bleeder

Engine Coolant Air Bleeder for OE-Style Repair

Dorman 626-588 is a replacement engine coolant air bleeder built to match the fit and durability of the original part on specified vehicles. It is made from black plastic and engineered to handle repeated temperature swings in the cooling system.

Compatible With Chevrolet Impala, Cadillac XTS, Buick LaCrosse, Cadillac SRX, and Buick Allure applications that use an air bleeder pipe design.

Key Features

• Replacement engine coolant air bleeder for specified OE applications
• Black plastic housing with a 45-degree neck angle
• Two-port design with 2 mounting holes and 2 bolt holes
• O-rings included for sealing at the connection points
• Built to withstand extreme temperature changes in the cooling system
• Direct interchange reference: 12637183

Detailed Description

This Dorman coolant air bleeder, part number 626-588, is designed for vehicles that use an air bleeder pipe in the engine cooling circuit. It follows the original fit and mounting layout, with port diameters of 0.65 in and 0.31 in, outlet diameters of 0.59 in and 0.31 in, and bolt hole diameters of 0.31 in and 0.29 in. The housing uses a 45-degree neck angle to match the OE routing on the listed applications.

Use 626-588 when servicing cooling-system components on 2014-2020 Chevrolet Impala, 2013-2019 Cadillac XTS, 2010-2016 Buick LaCrosse, 2010-2016 Cadillac SRX, and 2010 Buick Allure models. This part cross-references 12637183 for the same application.

Common Repair Symptoms

• Cooling system air trapped after service
• Coolant circulation issues caused by improper bleeding
• Leaks at a cracked or worn bleeder housing
• Fitment problems with a damaged OE air bleeder pipe
• Repeated coolant service failures from a deteriorated plastic component

Installation Notes and Tips

Verify the port sizes, mounting hole spacing, and 45-degree neck angle against the original part before installation. Transfer the O-rings as needed only if the replacement sealing surfaces require it; this part includes O-rings. Confirm the vehicle uses an air bleeder pipe configuration and inspect the surrounding cooling hoses and connections for wear before reassembly.

Quality Assurance

Dorman designs this replacement coolant air bleeder to match OE fit and durability requirements for the listed vehicles. The plastic construction is engineered for temperature cycling in engine cooling service.