HomeBelts and Cooling > Hoses and PipesDorman 624-118 Automatic Transmission Oil Cooler Hose Assembly - Auxiliary Cooler (Driver Side) to Transmission, Inlet (Lower) or Lower
Part #: 624-118

Dorman 624-118 Automatic Transmission Oil Cooler Hose Assembly - Auxiliary Cooler (Driver Side) to Transmission, Inlet (Lower) or Lower

Auxiliary Cooler (Driver Side) to Transmission, Lower, and Inlet (Lower)
83 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Cadillac, Chevrolet, and GMC, Escalade, Escalade ESV, Escalade EXT, Sierra 1500 HD, Sierra 1500 HD Classic, Sierra 2500, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Silverado 1500 HD, Silverado 1500 HD Classic, Silverado 2500, Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500, Silverado 3500 Classic, Suburban 1500, Suburban 2500, Yukon, Yukon XL 1500, and Yukon XL 2500
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Reliable Automatic Transmission Oil Cooler Hose Assembly

The Dorman 624-118 automatic transmission oil cooler hose assembly is designed to maintain optimal transmission fluid flow and temperature in select Cadillac, Chevrolet, and GMC vehicles. Engineered with durable rubber and metal materials, this hose assembly ensures consistent performance under a wide range of operating conditions.

  • Length: 56.7 inches for precise fitment
  • Hose color: Natural for easy identification
  • Ends feature quick disconnect fittings for efficient installation
  • Maximum working pressure of 100 psi
  • Operates reliably between -40°F and 329°F
  • Constructed from a combination of rubber and metal for durability
  • Non-flexible design to maintain structural integrity

Durable Construction and Precise Fitment

The Dorman 624-118 transmission line combines rubber and metal components to provide a robust and heat-resistant hose assembly. Its natural hose color allows for quick visual inspection during maintenance. The quick disconnect fittings on both ends simplify replacement and reduce service time. Designed to withstand pressures up to 100 psi and temperatures ranging from -40°F to 329°F, this hose assembly is suitable for demanding transmission cooling applications. The 56.7-inch length ensures compatibility with specific models without the need for modification.

Compatible Vehicles and Applications

This automatic transmission oil cooler hose assembly is compatible with a range of Cadillac, Chevrolet, and GMC trucks and SUVs, including:

  • Cadillac Escalade, Escalade ESV, Escalade EXT
  • Chevrolet Silverado 1500 HD, 2500, 3500 and their Classic variants
  • Chevrolet Suburban 1500 and 2500
  • GMC Sierra 1500 HD, 2500, 3500 and Classic models
  • GMC Yukon, Yukon XL 1500, Yukon XL 2500

Common Issues Addressed by This Hose Assembly

  • Transmission fluid leaks due to worn or damaged hoses
  • Overheating caused by restricted or failing cooler lines
  • Pressure loss affecting transmission cooling efficiency
  • Corrosion or cracking in original transmission cooler hoses
  • Difficulty in servicing with non-quick disconnect fittings

Installation Notes and Tips

When replacing the transmission oil cooler hose assembly, ensure the vehicle is cool and the transmission fluid system is depressurized. The quick disconnect fittings on both ends allow for straightforward removal and installation without specialized tools. Verify the hose length and fitting types match the original equipment to avoid leaks or improper fitment. Inspect surrounding components for wear or damage during installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The 624-118 transmission line undergoes rigorous quality control to ensure it withstands the operating pressures and temperatures specified. Please refer to Dorman's warranty policy for coverage details.

BrandDorman
Part Number624-118
Hose ColorNatural
Length56.7
End 1 TypeQuick disconnect
End 2 TypeQuick disconnect
Contains SpringNo
Maximum Working Pressure100
Hose MaterialRubber/metal
FlexibleNo
Maximum Operating Temperature (┬░F)329
Minimum Operating Temperature (┬░F)-40
Package Contents1 transmission line

This part fits 83 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2007ChevroletSilverado 1500 HD ClassicLower
2007ChevroletSilverado 2500 HD Classic6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2007ChevroletSilverado 3500 Classic6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2007GMCSierra 1500 HD ClassicLower
2007GMCSierra 2500 HD Classic6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2007GMCSierra 3500 Classic6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2006ChevroletSilverado 1500 HDLower
2006ChevroletSilverado 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2006ChevroletSilverado 35006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2006ChevroletSuburban 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2006GMCSierra 1500 HDLower
2006GMCSierra 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2006GMCSierra 35006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2006GMCYukon XL 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2005ChevroletSilverado 1500 HDLower
2005ChevroletSilverado 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2005ChevroletSilverado 35006.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2005ChevroletSuburban 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2005GMCSierra 1500 HDLower
2005GMCSierra 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2005GMCSierra 35006.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2005GMCYukon XL 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2004ChevroletSilverado 2500Inlet (Lower)
2004ChevroletSilverado 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2004ChevroletSilverado 35006.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2004ChevroletSuburban 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2004GMCSierra 2500Inlet (Lower)
2004GMCSierra 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2004GMCSierra 35006.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2004GMCYukon XL 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2003CadillacEscalade5.3LV8Auxiliary Cooler (Driver Side) to Transmission
2003CadillacEscalade6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2003CadillacEscalade ESV6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2003CadillacEscalade EXT6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2003ChevroletSilverado 1500 HDLower
2003ChevroletSilverado 2500Inlet (Lower)
2003ChevroletSilverado 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2003ChevroletSilverado 35006.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2003ChevroletSuburban 15005.3LV8Auxiliary Cooler (Driver Side) to Transmission
2003ChevroletSuburban 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2003GMCSierra 1500 HDLower
2003GMCSierra 2500Inlet (Lower)
2003GMCSierra 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2003GMCSierra 35006.0LV8Auxiliary Cooler (Driver Side) to TransmissionTube and Hose
2003GMCYukon XL 15005.3LV8Inlet (Lower)
2003GMCYukon XL 15006.0LV8Inlet (Lower)
2003GMCYukon XL 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2002CadillacEscalade5.3LV8Auxiliary Cooler (Driver Side) to Transmission
2002CadillacEscalade6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2002CadillacEscalade EXT6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2002ChevroletSilverado 1500 HDLower
2002ChevroletSilverado 2500Inlet (Lower)
2002ChevroletSilverado 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2002ChevroletSilverado 35006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2002ChevroletSuburban 15005.3LV8Auxiliary Cooler (Driver Side) to Transmission
2002ChevroletSuburban 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2002GMCSierra 1500 HDLower
2002GMCSierra 2500Inlet (Lower)
2002GMCSierra 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2002GMCSierra 35006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2002GMCYukon XL 1500Inlet (Lower)w/RPO Code KNP (Heavy Duty Transmission Cooling System)
2002GMCYukon XL 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2001ChevroletSilverado 1500 HDLower
2001ChevroletSilverado 2500Inlet (Lower)
2001ChevroletSilverado 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2001ChevroletSilverado 35006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2001ChevroletSuburban 15005.3LV8Auxiliary Cooler (Driver Side) to Transmission
2001ChevroletSuburban 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2001GMCSierra 1500 HDLower
2001GMCSierra 2500Inlet (Lower)
2001GMCSierra 2500 HD6.0LV8Auxiliary Cooler (Driver Side) to Transmission
2001GMCSierra 35006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2001GMCYukonInlet (Lower)w/RPO Code KNP (Heavy Duty Transmission Cooling System)
2001GMCYukon XL 1500Inlet (Lower)w/RPO Code KNP (Heavy Duty Transmission Cooling System)
2001GMCYukon XL 25006.0LV8Auxiliary Cooler (Driver Side) to Transmission
2000ChevroletSilverado 2500Inlet (Lower)
2000ChevroletSuburban 2500Auxiliary Cooler (Driver Side) to Transmission1st Design
2000ChevroletSuburban 2500Auxiliary Cooler (Driver Side) to Transmission2nd Design
2000GMCSierra 2500Inlet (Lower)
2000GMCYukon XL 2500Auxiliary Cooler (Driver Side) to Transmission1st Design
2000GMCYukon XL 2500Auxiliary Cooler (Driver Side) to Transmission2nd Design
1999ChevroletSilverado 2500Inlet (Lower)
1999GMCSierra 2500Inlet (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:

150528805801049

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