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Dayco DP1226B Engine Water Pump
Reliable Engine Water Pump for Chevrolet and GMC Trucks
The Dayco DP1226B engine water pump is designed to maintain optimal engine temperature for heavy-duty Chevrolet and GMC trucks. Engineered for models like the Silverado 2500 HD and Sierra 3500, this water pump ensures consistent coolant flow and reliable performance under demanding conditions.
- Compatible with Chevrolet Express 2500, Express 3500, GMC Savana 2500, Savana 3500, Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, and Silverado 3500 models
- Direct replacement for factory water pumps to maintain proper engine cooling
- Durable construction designed for heavy-duty truck applications
- Part number DP1226B ensures precise fit and function
- Supports engine cooling system efficiency to prevent overheating
Product Details and Compatibility
The Dayco DP1226B engine water pump is specifically engineered for use in Chevrolet and GMC heavy-duty trucks, including the Express 2500 and 3500 series, Savana 2500 and 3500, Sierra 2500 HD and 3500 HD, as well as Silverado 2500 HD and 3500 HD models. This pump is a critical component in the vehicle's cooling system, circulating coolant through the engine block and radiator to maintain optimal operating temperatures. Its design matches OEM specifications to ensure proper fitment and reliable operation.
Common Applications and Problem Resolution
- Replaces failing or leaking water pumps causing coolant loss
- Addresses engine overheating due to insufficient coolant circulation
- Resolves unusual noises from worn or damaged pump bearings
- Prevents engine damage related to cooling system failure
- Restores proper coolant flow in Chevrolet and GMC heavy-duty trucks
Installation Notes and Tips
When installing the Dayco DP1226B water pump, ensure the cooling system is fully drained before removal of the old pump. Clean the mounting surface thoroughly to prevent leaks. Use a new gasket or sealant as recommended by the vehicle manufacturer. After installation, refill the cooling system and bleed air pockets to avoid overheating. Verify compatibility with your specific Chevrolet or GMC model year and engine configuration prior to installation.
Quality Assurance and Warranty
Dayco manufactures the DP1226B engine water pump to meet stringent quality standards for durability and performance. While specific warranty details are not provided here, Dayco products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Refer to Dayco’s official documentation or your parts supplier for exact warranty terms.
This part fits 92 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2016 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2016 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2016 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2016 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2016 | GMC | Savana 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2016 | GMC | Savana 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2016 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2016 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2015 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2015 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2015 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2015 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2015 | GMC | Savana 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2015 | GMC | Savana 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2015 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2015 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2014 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2014 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2014 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2014 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2014 | GMC | Savana 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2014 | GMC | Savana 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2014 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2014 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2013 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2013 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2013 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2013 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2013 | GMC | Savana 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2013 | GMC | Savana 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2013 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2013 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2012 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2012 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2012 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2012 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2012 | GMC | Savana 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2012 | GMC | Savana 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2012 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2012 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2011 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2011 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2011 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2011 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2011 | GMC | Savana 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2011 | GMC | Savana 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2011 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2011 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2010 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2010 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2010 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2010 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2010 | GMC | Savana 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2010 | GMC | Savana 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2010 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2010 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2009 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2009 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2009 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2009 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2009 | GMC | Savana 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2009 | GMC | Savana 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2009 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2009 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2008 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2008 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2008 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2008 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2008 | GMC | Savana 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2008 | GMC | Savana 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2008 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2008 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | Chevrolet | Silverado 2500 HD Classic | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | Chevrolet | Silverado 3500 Classic | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | GMC | Savana 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | GMC | Savana 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | GMC | Sierra 2500 HD Classic | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | GMC | Sierra 3500 Classic | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2007 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2006 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2006 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2006 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2006 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2006 | GMC | Savana 2500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2006 | GMC | Savana 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2006 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
| 2006 | GMC | Sierra 3500 | 6.6L | V8 | N/A | Serpentine Belt Driven; w/Back Housing |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.