HomeBelts and Cooling > Hoses and PipesDorman 624-066 Automatic Transmission Oil Cooler Hose Assembly - Transmission to Radiator (Lower) or Upper
Part #: 624-066

Dorman 624-066 Automatic Transmission Oil Cooler Hose Assembly - Transmission to Radiator (Lower) or Upper

Transmission to Radiator (Lower) and Upper
30 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$45.26Free 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, Avalanche 2500, Sierra 2500 HD, Sierra 2500 HD Classic, Silverado 2500 HD, Suburban 2500, and Yukon XL 2500
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Automatic Transmission Oil Cooler Hose Assembly

The Dorman 624-066 automatic transmission oil cooler hose assembly is designed to provide a durable and precise fit for select Chevrolet and GMC heavy-duty trucks. Engineered to handle demanding operating conditions, this hose assembly ensures efficient transmission fluid cooling for optimal vehicle performance.

  • Length: 44 inches for proper routing and fitment
  • Hose Material: Combination of metal and rubber for strength and flexibility
  • End Connections: Male quick disconnect fittings on both ends for secure and easy installation
  • Maximum Working Pressure: Rated up to 100 PSI to withstand transmission fluid pressure
  • Operating Temperature Range: From -40°F to 329°F to endure extreme temperature variations
  • Hose Color: Natural finish for corrosion resistance and durability
  • Non-flexible design to maintain shape and prevent kinking

Durable Construction for Heavy-Duty Applications

The Dorman 624-066 hose assembly combines metal and rubber materials to provide a robust solution for automatic transmission oil cooling systems. Its 44-inch length and male quick disconnect fittings on both ends ensure compatibility and ease of installation on Chevrolet Avalanche 2500, GMC Sierra 2500 HD, Sierra 2500 HD Classic, Silverado 2500 HD, Suburban 2500, and Yukon XL 2500 models. The hose is engineered to operate reliably under pressures up to 100 PSI and temperatures ranging from -40°F to 329°F, making it suitable for heavy-duty use in various driving conditions.

Compatible Vehicles and Applications

  • Chevrolet Avalanche 2500 transmission oil cooler hose replacement
  • GMC Sierra 2500 HD and Sierra 2500 HD Classic transmission line repair
  • Silverado 2500 HD automatic transmission cooling system maintenance
  • Suburban 2500 and Yukon XL 2500 transmission fluid cooler hose upgrade

Installation Notes and Tips

Ensure the vehicle is cool and safely supported before beginning installation. The male quick disconnect fittings allow for straightforward removal and replacement without specialized tools. Verify hose routing to avoid contact with moving parts or heat sources. Inspect all connections for leaks after installation and test drive to confirm proper operation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The 624-066 transmission oil cooler hose assembly undergoes rigorous quality control to ensure durability and performance. Please refer to Dorman's warranty policy for specific coverage details.

BrandDorman
Part Number624-066
Hose ColorNatural
Length44
End 1 TypeMale quick disconnect
End 2 TypeMale quick disconnect
Contains SpringNo
Maximum Working Pressure100
Hose MaterialMetal
Hose MaterialRubber
FlexibleNo
Maximum Operating Temperature (┬░F)329
Minimum Operating Temperature (┬░F)-40
Package Contents1 transmission line

This part fits 30 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2007GMCSierra 2500 HD Classic8.1LV8Upper
2006ChevroletAvalanche 2500Transmission to Radiator (Lower)
2006ChevroletSilverado 2500 HD8.1LV8Transmission to Radiator (Lower)
2006ChevroletSuburban 25008.1LV8Transmission to Radiator (Lower)
2006GMCSierra 2500 HD8.1LV8Transmission to Radiator (Lower)
2006GMCYukon XL 25008.1LV8Transmission to Radiator (Lower)
2005ChevroletAvalanche 2500Transmission to Radiator (Lower)
2005ChevroletSilverado 2500 HD8.1LV8Transmission to Radiator (Lower)
2005ChevroletSuburban 25008.1LV8Transmission to Radiator (Lower)
2005GMCSierra 2500 HD8.1LV8Transmission to Radiator (Lower)
2005GMCYukon XL 25008.1LV8Transmission to Radiator (Lower)
2004ChevroletAvalanche 2500Transmission to Radiator (Lower)
2004ChevroletSilverado 2500 HD8.1LV8Transmission to Radiator (Lower)
2004ChevroletSuburban 25008.1LV8Transmission to Radiator (Lower)
2004GMCSierra 2500 HD8.1LV8Transmission to Radiator (Lower)
2004GMCYukon XL 25008.1LV8Transmission to Radiator (Lower)
2003ChevroletAvalanche 2500Transmission to Radiator (Lower)
2003ChevroletSilverado 2500 HD8.1LV8Transmission to Radiator (Lower)
2003ChevroletSuburban 25008.1LV8Transmission to Radiator (Lower)
2003GMCSierra 2500 HD8.1LV8Transmission to Radiator (Lower)
2003GMCYukon XL 25008.1LV8Transmission to Radiator (Lower)
2002ChevroletAvalanche 2500Transmission to Radiator (Lower)
2002ChevroletSilverado 2500 HD8.1LV8Transmission to Radiator (Lower)
2002ChevroletSuburban 25008.1LV8Transmission to Radiator (Lower)
2002GMCSierra 2500 HD8.1LV8Transmission to Radiator (Lower)
2002GMCYukon XL 25008.1LV8Transmission to Radiator (Lower)
2001ChevroletSilverado 2500 HD8.1LV8Transmission to Radiator (Lower)
2001ChevroletSuburban 25008.1LV8Transmission to Radiator (Lower)
2001GMCSierra 2500 HD8.1LV8Transmission to Radiator (Lower)
2001GMCYukon XL 25008.1LV8Transmission to Radiator (Lower)

* 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:

151901425801134

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