HomeBelts and Cooling > Hoses and PipesDorman 624-031 Automatic Transmission Oil Cooler Hose Assembly - Upper
Part #: 624-031

Dorman 624-031 Automatic Transmission Oil Cooler Hose Assembly - Upper

Upper
14 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick, Chevrolet, Oldsmobile, and Pontiac, Century, Regal, Lumina, Monte Carlo, Intrigue, and Grand Prix
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Reliable Automatic Transmission Oil Cooler Hose Assembly

The Dorman 624-031 automatic transmission oil cooler hose assembly is designed to provide a durable and flexible connection for your vehicle's transmission cooling system. Engineered to meet the demands of Buick, Chevrolet, Oldsmobile, and Pontiac models, this hose assembly ensures efficient fluid transfer and temperature regulation.

  • 24-inch length for precise fitment
  • Natural hose color for easy identification
  • Constructed with both metal and rubber materials for strength and flexibility
  • Male threaded end and male quick disconnect end for secure connections
  • 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 Compatibility

This Dorman transmission oil cooler hose assembly combines metal and rubber components to balance durability with flexibility. The natural color hose measures 24 inches, making it suitable for specific transmission cooling lines. The male threaded end and male quick disconnect end provide secure and leak-resistant connections, essential for maintaining transmission fluid integrity. Designed to withstand temperatures from -40°F to 329°F and pressures up to 100 PSI, this hose assembly is built to perform under typical operating conditions.

Compatible with Buick Century, Chevrolet Lumina and Monte Carlo, Oldsmobile Intrigue and Regal, as well as Pontiac Grand Prix models, the Dorman 624-031 is a direct replacement part that meets OEM specifications.

Common Applications and Problem Resolution

  • Replacement of worn or cracked transmission oil cooler hoses
  • Fixing leaks caused by damaged or brittle hose material
  • Restoring proper transmission fluid flow and cooling efficiency
  • Preventing overheating issues related to faulty cooler lines
  • Addressing pressure loss in transmission cooling systems

Installation Notes and Tips

Before installation, ensure the vehicle is cool and the transmission fluid system is depressurized. The 24-inch hose length and specific end fittings require matching to the original hose for proper fit. Use appropriate tools to connect the male threaded and quick disconnect ends securely, avoiding overtightening which can damage fittings. Inspect all connections for leaks after installation and test drive the vehicle to confirm proper operation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for your transmission cooling needs. The 624-031 hose assembly undergoes rigorous quality control to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship.

BrandDorman
Part Number624-031
Contains SpringNo
End 1 TypeMale Threads
End 2 TypeMale Quick Disconnect
FlexibleYes
Hose ColorNatural
Hose MaterialMetal
Hose MaterialRubber
Length24
Maximum Operating Temperature (┬░F)329
Maximum Working Pressure100
Minimum Operating Temperature (┬░F)-40
Package Contents1 Transmission Line

This part fits 14 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1999BuickCenturyUpperRadiator to Transmission
1999BuickRegalUpperRadiator to Transmission
1999ChevroletLuminaUpperRadiator to Transmission; wo/Auxiliary Oil Cooler
1999ChevroletMonte CarloUpperRadiator to Transmission; wo/Auxiliary Oil Cooler
1999OldsmobileIntrigue3.8LV6UpperRadiator to Transmission
1999PontiacGrand Prix3.8LV6UpperRadiator to Transmission
1999PontiacGrand Prix3.1LV6UpperRadiator to Transmission
1998BuickCenturyUpperRadiator to Transmission
1998BuickRegalUpperRadiator to Transmission
1998ChevroletLuminaUpperRadiator to Transmission; wo/Auxiliary Oil Cooler
1998ChevroletMonte CarloUpperRadiator to Transmission; wo/Auxiliary Oil Cooler
1998OldsmobileIntrigueUpperRadiator to Transmission
1998PontiacGrand Prix3.8LV6UpperRadiator to Transmission
1998PontiacGrand Prix3.1LV6UpperRadiator to Transmission

* 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:

104090595801122

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