Dorman 624-557 Automatic Transmission Oil Cooler Hose Assembly - Lower

Brand Dorman 624-557
Position Lower
Contains Spring No
End 1 Inside Diameter 0.30
End 1 Type Male Threads
End 2 Type None
Flexible Yes
Gasket or Seal Included Yes
Hose Color Black
Hose Color Silver
Hose Material Metal
Hose Material Rubber
Hose Shape Molded Assembly
Length 15.5
Maximum Operating Temperature (┬░F) 329 Deg. F.
Maximum Working Pressure 100
Minimum Operating Temperature (┬░F) -40 Deg. F.
Package Contents 1 Transmission Line
Fits Cadillac and Pontiac · 5 vehicles

Leak-free delivery. Metal and rubber construction moves critical fluid securely.

Molded assembly. Flexible hose shape helps simplify installation.

Seal included. Ready for a secure connection at the ends.

Cross-references 5801442 and 25701686 for the same application. See all 2.

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Dorman 624-557 Transmission Oil Cooler Hose

Dorman 624-557 is an automatic transmission oil cooler hose assembly built with metal and rubber components for fluid transfer between the transmission and the transmission oil cooler. It is a direct-fit replacement for select Cadillac and Pontiac applications, including 2004-2005 Cadillac DeVille, 2004 Cadillac Seville, and 2004-2005 Pontiac Bonneville, lower.

Key Features

  • Automatic transmission oil cooler hose assembly for cooler line service
  • Metal and rubber construction for a molded OE-style routing
  • Male threads on end 1; end 2 is not threaded
  • 15.5-inch length with a 0.30-inch inside diameter at end 1
  • Includes gasket or seal for the connection point
  • Rated for 100 psi maximum working pressure
  • Operating range from -40°F to 329°F
  • Black and silver hose finish

Detailed Description

This Dorman 624-557 transmission cooler hose assembly is built to replace a worn, leaking, or damaged cooler line that carries automatic transmission fluid between the transmission and the transmission oil cooler. The molded assembly uses metal and rubber materials to match the routing and connection style needed for select lower-position applications on 2004-2005 Cadillac DeVille, 2004 Cadillac Seville, and 2004-2005 Pontiac Bonneville. This part cross-references OE numbers 5801442 and 25701686 for the same application.

What It Helps Fix

  • Transmission fluid leaks at the cooler line
  • Cracked, corroded, or damaged hose sections
  • Restricted fluid transfer between the transmission and cooler
  • Improper hose routing from a failed molded line
  • Service issues caused by deteriorated seals at the connection point

Installation Notes and Tips

Verify lower-position fitment before ordering. Confirm the end 1 male-thread connection, hose length, and seal style against the original line on the vehicle. Clean the mating surfaces and inspect adjacent cooler fittings and transmission ports before installation to help ensure a secure seal and proper fluid flow.

Quality Assurance

Dorman replacement parts are engineered as service replacements for specific vehicle applications. This hose assembly is constructed from metal and rubber components to support leak-resistant transmission fluid delivery in the listed Cadillac and Pontiac fitments.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelPositionNotes
2005CadillacDeVille—Lower—
2005PontiacBonnevilleGXPLower—
2004CadillacDeVille—Lower—
2004CadillacSeville—Lower—
2004PontiacBonnevilleGXPLower—
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
580144225701686