Dorman 626-543 Engine Coolant Air Bleed Pipe

Name: Dorman 626-543 Engine Coolant Air Bleed Pipe
Brand: Dorman
SKU: BKKY-626-543
Price: 82.14 USD
Availability: InStock

205 vehicles fit this part

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OE Direct Replacement — Bolt-on fit, no modifications needed

Fitment: Buick, Cadillac, Chevrolet, GMC, Hummer, and Isuzu, Ascender, Avalanche 1500, Envoy XL, Envoy XUV, Escalade, Escalade ESV, Escalade EXT, Express 1500, Express 2500, Express 3500, H2, Rainier, Savana 1500, Savana 2500, Savana 3500, Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD, Sierra 1500 HD Classic, Sierra 2500, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD, Silverado 1500 HD Classic, Silverado 2500, Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500, Silverado 3500 Classic, SSR, Suburban 1500, Tahoe, Trailblazer EXT, Yukon, Yukon XL 1500, and Yukon XL 2500

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Not what you need? See all Engine Coolant Air Bleed Pipe options

Reliable Engine Coolant Air Bleed Pipe for Select GM Vehicles

The Dorman 626-543 Engine Coolant Air Bleed Pipe is designed to maintain proper coolant flow and air removal in your vehicle's cooling system. Engineered to precise dimensions, this coolant bypass tube supports efficient engine temperature regulation for various Buick, Cadillac, Chevrolet, GMC, Hummer, and Isuzu models.

Length: 10.5 inches for optimal fitment
Inside Diameter: 0.2 inches ensuring proper coolant flow
Outside Diameter: 0.29 inches for secure connections
Width: 0.8 inches and Height: 2.91 inches for accurate installation
Package includes one coolant bypass tube

Detailed Product Description

The Dorman 626-543 Engine Coolant Air Bleed Pipe is manufactured to meet or exceed OEM specifications, providing a precise fit for a range of GM vehicles including the Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, and Hummer H2. This component plays a critical role in the cooling system by allowing trapped air to escape, preventing overheating and maintaining consistent engine temperature. Its dimensions—10.5 inches in length, 0.2 inches inside diameter, and 0.29 inches outside diameter—ensure compatibility with the cooling system's design parameters. The pipe's width and height measurements support a secure and leak-free installation, contributing to the overall reliability of the cooling system.

Compatible Vehicles and Applications

Buick Rainier
Cadillac Escalade, Escalade ESV, Escalade EXT
Chevrolet Avalanche 1500, Silverado 1500, Suburban 1500, Tahoe
GMC Sierra 1500, Sierra 2500 HD, Sierra 3500, Yukon XL 1500
Hummer H2
Isuzu Ascender, Envoy XL, Envoy XUV

This part is specifically designed for use in the engine cooling systems of these models to ensure proper air bleed and coolant circulation.

Common Cooling System Issues Addressed

Air trapped in the cooling system causing overheating
Coolant bypass failures leading to inefficient temperature regulation
Leaks or cracks in existing air bleed pipes
Reduced coolant flow affecting engine performance
Corrosion or wear in original equipment air bleed components

Installation Notes and Tips

When installing the Dorman 626-543 Engine Coolant Air Bleed Pipe, ensure the cooling system is fully drained and cooled to prevent injury. Verify the pipe dimensions match the original part to guarantee proper fitment. Inspect surrounding hoses and clamps for wear and replace as necessary to maintain system integrity. After installation, bleed the cooling system according to manufacturer guidelines to remove trapped air and confirm leak-free operation.

Quality Assurance and Warranty

Dorman parts are engineered to meet or exceed OEM standards, providing dependable performance and durability. The 626-543 Engine Coolant Air Bleed Pipe undergoes rigorous quality control to ensure fit, form, and function. While specific warranty details are not provided, Dorman typically offers limited warranties covering defects in materials and workmanship.

Brand	Dorman
Part Number	626-543
Length	10.5
Inside Diameter	0.2
Width	0.8
Outside Diameter	0.29
Height	2.91
Package Contents	Coolant bypass tube

This part fits 205 vehicles. Search below:

Year	Make	Model	Liters	Cylinders	Position
2007	Chevrolet	Express 1500	5.3L	V8	N/A
2007	Chevrolet	Express 2500	6.0L	V8	N/A
2007	Chevrolet	Express 3500	6.0L	V8	N/A
2007	Chevrolet	Silverado 1500 Classic	5.3L	V8	N/A
2007	Chevrolet	Silverado 1500 Classic	6.0L	V8	N/A
2007	Chevrolet	Silverado 1500 HD Classic	6.0L	V8	N/A
2007	Chevrolet	Silverado 2500 HD Classic	6.0L	V8	N/A
2007	Chevrolet	Silverado 3500 Classic	6.0L	V8	N/A
2007	GMC	Savana 1500	5.3L	V8	N/A
2007	GMC	Savana 2500	6.0L	V8	N/A
2007	GMC	Savana 3500	6.0L	V8	N/A
2007	GMC	Sierra 1500 Classic	5.3L	V8	N/A
2007	GMC	Sierra 1500 Classic	6.0L	V8	N/A
2007	GMC	Sierra 1500 HD Classic	6.0L	V8	N/A
2007	GMC	Sierra 2500 HD Classic	6.0L	V8	N/A
2007	GMC	Sierra 3500 Classic	6.0L	V8	N/A
2007	Hummer	H2	6.0L	V8	N/A
2006	Cadillac	Escalade	6.0L	V8	N/A
2006	Cadillac	Escalade ESV	6.0L	V8	N/A
2006	Cadillac	Escalade EXT	6.0L	V8	N/A
2006	Chevrolet	Avalanche 1500	5.3L	V8	N/A
2006	Chevrolet	Express 1500	5.3L	V8	N/A
2006	Chevrolet	Express 2500	6.0L	V8	N/A
2006	Chevrolet	Express 3500	6.0L	V8	N/A
2006	Chevrolet	Silverado 1500	5.3L	V8	N/A
2006	Chevrolet	Silverado 1500	6.0L	V8	N/A
2006	Chevrolet	Silverado 1500 HD	6.0L	V8	N/A
2006	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2006	Chevrolet	Silverado 3500	6.0L	V8	N/A
2006	Chevrolet	Suburban 1500	5.3L	V8	N/A
2006	Chevrolet	Tahoe	5.3L	V8	N/A
2006	GMC	Savana 1500	5.3L	V8	N/A
2006	GMC	Savana 2500	6.0L	V8	N/A
2006	GMC	Savana 3500	6.0L	V8	N/A
2006	GMC	Sierra 1500	5.3L	V8	N/A
2006	GMC	Sierra 1500	6.0L	V8	N/A
2006	GMC	Sierra 1500 HD	6.0L	V8	N/A
2006	GMC	Sierra 2500 HD	6.0L	V8	N/A
2006	GMC	Sierra 3500	6.0L	V8	N/A
2006	GMC	Yukon	5.3L	V8	N/A
2006	GMC	Yukon	6.0L	V8	N/A
2006	GMC	Yukon XL 1500	5.3L	V8	N/A
2006	GMC	Yukon XL 1500	6.0L	V8	N/A
2006	GMC	Yukon XL 2500	6.0L	V8	N/A
2006	Hummer	H2	6.0L	V8	N/A
2005	Cadillac	Escalade	5.3L	V8	N/A
2005	Cadillac	Escalade	6.0L	V8	N/A
2005	Cadillac	Escalade ESV	6.0L	V8	N/A
2005	Cadillac	Escalade EXT	6.0L	V8	N/A
2005	Chevrolet	Avalanche 1500	5.3L	V8	N/A
2005	Chevrolet	Express 1500	5.3L	V8	N/A
2005	Chevrolet	Express 2500	5.3L	V8	N/A
2005	Chevrolet	Express 2500	6.0L	V8	N/A
2005	Chevrolet	Express 3500	6.0L	V8	N/A
2005	Chevrolet	Silverado 1500	5.3L	V8	N/A
2005	Chevrolet	Silverado 1500	6.0L	V8	N/A
2005	Chevrolet	Silverado 1500 HD	6.0L	V8	N/A
2005	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2005	Chevrolet	Silverado 3500	6.0L	V8	N/A
2005	Chevrolet	Suburban 1500	5.3L	V8	N/A
2005	Chevrolet	Tahoe	5.3L	V8	N/A
2005	GMC	Savana 1500	5.3L	V8	N/A
2005	GMC	Savana 2500	5.3L	V8	N/A
2005	GMC	Savana 2500	6.0L	V8	N/A
2005	GMC	Savana 3500	6.0L	V8	N/A
2005	GMC	Sierra 1500	5.3L	V8	N/A
2005	GMC	Sierra 1500	6.0L	V8	N/A
2005	GMC	Sierra 1500 HD	6.0L	V8	N/A
2005	GMC	Sierra 2500 HD	6.0L	V8	N/A
2005	GMC	Sierra 3500	6.0L	V8	N/A
2005	GMC	Yukon	5.3L	V8	N/A
2005	GMC	Yukon	6.0L	V8	N/A
2005	GMC	Yukon XL 1500	5.3L	V8	N/A
2005	GMC	Yukon XL 1500	6.0L	V8	N/A
2005	GMC	Yukon XL 2500	6.0L	V8	N/A
2005	Hummer	H2	6.0L	V8	N/A
2004	Buick	Rainier	5.3L	V8	N/A
2004	Cadillac	Escalade	5.3L	V8	N/A
2004	Cadillac	Escalade	6.0L	V8	N/A
2004	Cadillac	Escalade ESV	6.0L	V8	N/A
2004	Cadillac	Escalade EXT	6.0L	V8	N/A
2004	Chevrolet	Avalanche 1500	5.3L	V8	N/A
2004	Chevrolet	Express 1500	5.3L	V8	N/A
2004	Chevrolet	Express 2500	5.3L	V8	N/A
2004	Chevrolet	Express 2500	6.0L	V8	N/A
2004	Chevrolet	Express 3500	6.0L	V8	N/A
2004	Chevrolet	Silverado 1500	5.3L	V8	N/A
2004	Chevrolet	Silverado 1500	6.0L	V8	N/A
2004	Chevrolet	Silverado 2500	6.0L	V8	N/A
2004	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2004	Chevrolet	Silverado 3500	6.0L	V8	N/A
2004	Chevrolet	SSR	5.3L	V8	N/A
2004	Chevrolet	Suburban 1500	5.3L	V8	N/A
2004	Chevrolet	Tahoe	5.3L	V8	N/A
2004	Chevrolet	Trailblazer EXT	5.3L	V8	N/A
2004	GMC	Envoy XL	5.3L	V8	N/A
2004	GMC	Envoy XUV	5.3L	V8	N/A
2004	GMC	Savana 1500	5.3L	V8	N/A
2004	GMC	Savana 2500	5.3L	V8	N/A
2004	GMC	Savana 2500	6.0L	V8	N/A
2004	GMC	Savana 3500	6.0L	V8	N/A
2004	GMC	Sierra 1500	5.3L	V8	N/A
2004	GMC	Sierra 1500	6.0L	V8	N/A
2004	GMC	Sierra 2500	6.0L	V8	N/A
2004	GMC	Sierra 2500 HD	6.0L	V8	N/A
2004	GMC	Sierra 3500	6.0L	V8	N/A
2004	GMC	Yukon	5.3L	V8	N/A
2004	GMC	Yukon	6.0L	V8	N/A
2004	GMC	Yukon XL 1500	5.3L	V8	N/A
2004	GMC	Yukon XL 1500	6.0L	V8	N/A
2004	GMC	Yukon XL 2500	6.0L	V8	N/A
2004	Hummer	H2	6.0L	V8	N/A
2004	Isuzu	Ascender	5.3L	V8	N/A
2003	Cadillac	Escalade	5.3L	V8	N/A
2003	Cadillac	Escalade	6.0L	V8	N/A
2003	Cadillac	Escalade ESV	6.0L	V8	N/A
2003	Cadillac	Escalade EXT	6.0L	V8	N/A
2003	Chevrolet	Avalanche 1500	5.3L	V8	N/A
2003	Chevrolet	Express 1500	5.3L	V8	N/A
2003	Chevrolet	Express 2500	5.3L	V8	N/A
2003	Chevrolet	Express 2500	6.0L	V8	N/A
2003	Chevrolet	Express 3500	6.0L	V8	N/A
2003	Chevrolet	Silverado 1500	5.3L	V8	N/A
2003	Chevrolet	Silverado 1500	6.0L	V8	N/A
2003	Chevrolet	Silverado 1500 HD	6.0L	V8	N/A
2003	Chevrolet	Silverado 2500	6.0L	V8	N/A
2003	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2003	Chevrolet	Silverado 3500	6.0L	V8	N/A
2003	Chevrolet	Suburban 1500	5.3L	V8	N/A
2003	Chevrolet	Tahoe	5.3L	V8	N/A
2003	Chevrolet	Trailblazer EXT	5.3L	V8	N/A
2003	GMC	Envoy XL	5.3L	V8	N/A
2003	GMC	Savana 1500	5.3L	V8	N/A
2003	GMC	Savana 2500	5.3L	V8	N/A
2003	GMC	Savana 2500	6.0L	V8	N/A
2003	GMC	Savana 3500	6.0L	V8	N/A
2003	GMC	Sierra 1500	5.3L	V8	N/A
2003	GMC	Sierra 1500	6.0L	V8	N/A
2003	GMC	Sierra 1500 HD	6.0L	V8	N/A
2003	GMC	Sierra 2500	6.0L	V8	N/A
2003	GMC	Sierra 2500 HD	6.0L	V8	N/A
2003	GMC	Sierra 3500	6.0L	V8	N/A
2003	GMC	Yukon	5.3L	V8	N/A
2003	GMC	Yukon	6.0L	V8	N/A
2003	GMC	Yukon XL 1500	5.3L	V8	N/A
2003	GMC	Yukon XL 1500	6.0L	V8	N/A
2003	GMC	Yukon XL 2500	6.0L	V8	N/A
2003	Hummer	H2	6.0L	V8	N/A
2003	Isuzu	Ascender	5.3L	V8	N/A
2002	Cadillac	Escalade	5.3L	V8	N/A
2002	Cadillac	Escalade	6.0L	V8	N/A
2002	Cadillac	Escalade EXT	6.0L	V8	N/A
2002	Chevrolet	Avalanche 1500	5.3L	V8	N/A
2002	Chevrolet	Silverado 1500	5.3L	V8	N/A
2002	Chevrolet	Silverado 1500 HD	6.0L	V8	N/A
2002	Chevrolet	Silverado 2500	6.0L	V8	N/A
2002	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2002	Chevrolet	Silverado 3500	6.0L	V8	N/A
2002	Chevrolet	Suburban 1500	5.3L	V8	N/A
2002	Chevrolet	Tahoe	5.3L	V8	N/A
2002	GMC	Sierra 1500	5.3L	V8	N/A
2002	GMC	Sierra 1500	6.0L	V8	N/A
2002	GMC	Sierra 1500 HD	6.0L	V8	N/A
2002	GMC	Sierra 2500	6.0L	V8	N/A
2002	GMC	Sierra 2500 HD	6.0L	V8	N/A
2002	GMC	Sierra 3500	6.0L	V8	N/A
2002	GMC	Yukon	5.3L	V8	N/A
2002	GMC	Yukon	6.0L	V8	N/A
2002	GMC	Yukon XL 1500	5.3L	V8	N/A
2002	GMC	Yukon XL 1500	6.0L	V8	N/A
2002	GMC	Yukon XL 2500	6.0L	V8	N/A
2001	Chevrolet	Silverado 1500	5.3L	V8	N/A
2001	Chevrolet	Silverado 1500 HD	6.0L	V8	N/A
2001	Chevrolet	Silverado 2500	6.0L	V8	N/A
2001	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2001	Chevrolet	Silverado 3500	6.0L	V8	N/A
2001	Chevrolet	Suburban 1500	5.3L	V8	N/A
2001	Chevrolet	Tahoe	5.3L	V8	N/A
2001	GMC	Sierra 1500	5.3L	V8	N/A
2001	GMC	Sierra 1500	6.0L	V8	N/A
2001	GMC	Sierra 1500 HD	6.0L	V8	N/A
2001	GMC	Sierra 2500	6.0L	V8	N/A
2001	GMC	Sierra 2500 HD	6.0L	V8	N/A
2001	GMC	Sierra 3500	6.0L	V8	N/A
2001	GMC	Yukon	5.3L	V8	N/A
2001	GMC	Yukon	6.0L	V8	N/A
2001	GMC	Yukon XL 1500	5.3L	V8	N/A
2001	GMC	Yukon XL 1500	6.0L	V8	N/A
2001	GMC	Yukon XL 2500	6.0L	V8	N/A
2000	Chevrolet	Silverado 1500	5.3L	V8	N/A
2000	Chevrolet	Silverado 2500	5.3L	V8	N/A
2000	Chevrolet	Silverado 2500	6.0L	V8	N/A
2000	Chevrolet	Suburban 1500	5.3L	V8	N/A
2000	Chevrolet	Tahoe	5.3L	V8	N/A
2000	GMC	Sierra 1500	5.3L	V8	N/A
2000	GMC	Sierra 2500	5.3L	V8	N/A
2000	GMC	Sierra 2500	6.0L	V8	N/A
2000	GMC	Yukon	5.3L	V8	N/A
2000	GMC	Yukon XL 1500	5.3L	V8	N/A
1999	Chevrolet	Silverado 1500	5.3L	V8	N/A
1999	Chevrolet	Silverado 2500	5.3L	V8	N/A
1999	Chevrolet	Silverado 2500	6.0L	V8	N/A
1999	GMC	Sierra 1500	5.3L	V8	N/A
1999	GMC	Sierra 2500	5.3L	V8	N/A
1999	GMC	Sierra 2500	6.0L	V8	N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

12559091

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.