HomeBelts and Cooling > Water Pump and Related ComponentsDayco DP1226 Engine Water Pump
Part #: DP1226

Dayco DP1226 Engine Water Pump

⚙️ 92 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$133.89Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, Express 2500, Express 3500, Savana 2500, Savana 3500, Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, Silverado 3500 HD, Silverado 2500 HD Classic, Silverado 3500 Classic, Sierra 2500 HD Classic, Sierra 3500 Classic, Silverado 3500, and Sierra 3500
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Water Pump for Chevrolet and GMC Trucks

The Dayco DP1226 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
  • Durable construction for long-lasting engine cooling
  • Precision fit for direct replacement without modification
  • Maintains efficient coolant circulation to prevent overheating
  • Part number DP1226 for easy identification and ordering

Product Details and Compatibility

The Dayco DP1226 engine water pump is specifically designed for use in Chevrolet and GMC heavy-duty trucks, including the Express 2500 and 3500 series, Savana 2500 and 3500, as well as the Sierra and Silverado 2500 and 3500 HD models. This pump is engineered to meet or exceed OEM specifications, providing a reliable solution for maintaining engine temperature and preventing overheating. Its precise fitment ensures straightforward installation and compatibility with the vehicle’s cooling system.

Common Applications and Problem Resolution

This engine water pump is used to circulate coolant through the engine block and radiator, helping to regulate engine temperature. It addresses several common issues, including:

  • Engine overheating due to coolant circulation failure
  • Coolant leaks from worn or damaged water pump seals
  • Reduced engine performance caused by inefficient cooling
  • Noise or vibration from a failing water pump bearing
  • Premature engine wear from inadequate temperature control

Installation Notes and Tips

When installing the Dayco DP1226 water pump, ensure the cooling system is fully drained before removal of the old pump. Clean the mounting surface thoroughly to prevent leaks and verify that all gasket surfaces are intact. Use the correct torque specifications for mounting bolts to avoid damage. After installation, refill the cooling system with the appropriate coolant and bleed air pockets to maintain system efficiency.

Quality Assurance and Warranty

Dayco manufactures the DP1226 engine water pump to meet stringent quality standards, ensuring durability and reliable performance. While specific warranty details may vary, Dayco typically offers coverage against defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms.

This part fits 92 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2016ChevroletExpress 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2016ChevroletExpress 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2016ChevroletSilverado 2500 HD6.6LV8N/Aw/o Back Housing
2016ChevroletSilverado 3500 HD6.6LV8N/Aw/o Back Housing
2016GMCSavana 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2016GMCSavana 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2016GMCSierra 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2016GMCSierra 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2015ChevroletExpress 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2015ChevroletExpress 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2015ChevroletSilverado 2500 HD6.6LV8N/Aw/o Back Housing
2015ChevroletSilverado 3500 HD6.6LV8N/Aw/o Back Housing
2015GMCSavana 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2015GMCSavana 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2015GMCSierra 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2015GMCSierra 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2014ChevroletExpress 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2014ChevroletExpress 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2014ChevroletSilverado 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2014ChevroletSilverado 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2014GMCSavana 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2014GMCSavana 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2014GMCSierra 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2014GMCSierra 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2013ChevroletExpress 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2013ChevroletExpress 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2013ChevroletSilverado 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2013ChevroletSilverado 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2013GMCSavana 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2013GMCSavana 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2013GMCSierra 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2013GMCSierra 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2012ChevroletExpress 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2012ChevroletExpress 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2012ChevroletSilverado 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2012ChevroletSilverado 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2012GMCSavana 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2012GMCSavana 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2012GMCSierra 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2012GMCSierra 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2011ChevroletExpress 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2011ChevroletExpress 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2011ChevroletSilverado 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2011ChevroletSilverado 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2011GMCSavana 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2011GMCSavana 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2011GMCSierra 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2011GMCSierra 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2010ChevroletExpress 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2010ChevroletExpress 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2010ChevroletSilverado 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2010ChevroletSilverado 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2010GMCSavana 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2010GMCSavana 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2010GMCSierra 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2010GMCSierra 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2009ChevroletExpress 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2009ChevroletExpress 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2009ChevroletSilverado 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2009ChevroletSilverado 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2009GMCSavana 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2009GMCSavana 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2009GMCSierra 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2009GMCSierra 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2008ChevroletExpress 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2008ChevroletExpress 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2008ChevroletSilverado 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2008ChevroletSilverado 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2008GMCSavana 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2008GMCSavana 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2008GMCSierra 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2008GMCSierra 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007ChevroletExpress 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007ChevroletExpress 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007ChevroletSilverado 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007ChevroletSilverado 2500 HD Classic6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007ChevroletSilverado 3500 Classic6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007ChevroletSilverado 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007GMCSavana 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007GMCSavana 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007GMCSierra 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007GMCSierra 2500 HD Classic6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007GMCSierra 3500 Classic6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2007GMCSierra 3500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2006ChevroletExpress 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2006ChevroletExpress 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2006ChevroletSilverado 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2006ChevroletSilverado 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2006GMCSavana 25006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2006GMCSavana 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2006GMCSierra 2500 HD6.6LV8N/ASerpentine Belt Driven; w/o Back Housing
2006GMCSierra 35006.6LV8N/ASerpentine Belt Driven; w/o Back Housing

* 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:

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