HomeBelts and Cooling > Hoses and PipesDorman 624-624 Automatic Transmission Oil Cooler Hose Assembly - Upper
Part #: 624-624

Dorman 624-624 Automatic Transmission Oil Cooler Hose Assembly - Upper

Upper
⚙️ 12 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Buick and Cadillac, Lucerne and DTS
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Reliable Automatic Transmission Oil Cooler Hose Assembly

The Dorman 624-624 automatic transmission oil cooler hose assembly is designed to provide a durable and flexible connection for your vehicle's transmission cooling system. Specifically engineered for Buick Lucerne and Cadillac DTS models, this hose assembly ensures efficient fluid transfer under varying temperature and pressure conditions.

  • Compatible with Buick Lucerne and Cadillac DTS models
  • Hose length: 8.58 inches for precise fitment
  • Natural-colored hose with straight shape for easy routing
  • Quick disconnect fittings on both ends for fast installation and removal
  • Constructed from a combination of metal and rubber for flexibility and durability
  • Operates reliably between -40°F and 329°F
  • Maximum working pressure of 100 psi
  • Flexible design without internal spring for smooth fluid flow

Durable Construction and Precise Fitment

The Dorman 624-624 transmission oil cooler hose assembly features a hybrid construction using metal and rubber materials, providing both flexibility and strength. Its straight hose shape and natural color allow for straightforward installation and compatibility with the original equipment layout. The quick disconnect fittings on both ends, each with a 0.31-inch inside diameter, facilitate secure and leak-free connections while simplifying maintenance tasks. Designed to withstand a maximum working pressure of 100 psi and operating temperatures ranging from -40°F to 329°F, this hose assembly is built to endure the demanding conditions of automatic transmission cooling systems in Buick Lucerne and Cadillac DTS vehicles.

Application and Common Issues Addressed

  • Replacement of worn or cracked transmission oil cooler hoses
  • Resolving transmission fluid leaks caused by damaged hose assemblies
  • Restoring proper transmission fluid flow to prevent overheating
  • Addressing hose failures due to temperature or pressure stress
  • Maintaining transmission system integrity in Buick Lucerne and Cadillac DTS models

Installation Notes and Tips

Before installation, ensure the vehicle is cool and the transmission fluid system is depressurized. The quick disconnect fittings on both ends allow for straightforward removal and replacement without specialized tools. Verify the hose length and fitting sizes match your vehicle’s specifications. Inspect surrounding components for wear or damage during installation to prevent future issues. Properly secure the hose to avoid contact with moving parts or excessive heat sources.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The 624-624 transmission oil cooler hose assembly undergoes rigorous quality control to provide consistent fit and function. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship to support long-term vehicle maintenance.

BrandDorman
Part Number624-624
Contains SpringNo
End 1 Inside Diameter0.31
End 1 TypeQuick Disconnect
End 2 TypeQuick Disconnect
FlexibleYes
Gasket or Seal IncludedNo
Hose ColorNatural
Hose MaterialMetal
Hose MaterialRubber
Hose ShapeStraight
Length8.58
Maximum Operating Temperature (┬░F)329 Deg. F
Maximum Working Pressure100
Minimum Operating Temperature (┬░F)-40 Deg. F
Package Contents1 Transmission Line

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2011BuickLucerne4.6LV8Upper
2011CadillacDTS4.6LV8Upper
2010BuickLucerne4.6LV8Upper
2010CadillacDTS4.6LV8Upper
2009BuickLucerne4.6LV8Upper
2009CadillacDTS4.6LV8Upper
2008BuickLucerne4.6LV8Upper
2008CadillacDTS4.6LV8Upper
2007BuickLucerne4.6LV8Upper
2007CadillacDTS4.6LV8Upper
2006BuickLucerne4.6LV8Upper
2006CadillacDTS4.6LV8Upper

* 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:

15777138

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