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Dorman 624-741 Automatic Transmission Oil Cooler Hose Assembly - Lower
| Brand | Dorman 624-741 |
|---|---|
| Position | Lower |
| Contains Spring | No |
| End 1 Inside Diameter | 0.32 |
| End 1 Type | Quick Disconnect |
| End 2 Type | Quick Disconnect |
| Flexible | Yes |
| Gasket or Seal Included | No |
| Hose Color | Natural |
| Hose Material | Metal |
| Hose Material | Rubber |
| Hose Shape | Straight |
| Length | 14.4 |
| Maximum Operating Temperature (┬░F) | 329 Deg. F |
| Maximum Working Pressure | 100 |
| Minimum Operating Temperature (┬░F) | -40 Deg. F |
| Package Contents | 1 Transmission Line |
| Fits | Chevrolet and GMC · 20 vehicles |
Leak-free delivery. Metal and rubber construction moves critical fluid cleanly between components.
Quick disconnect ends. Simplifies connection on a straight transmission hose assembly.
Flexible design. Handles temperatures from -40°F to 329°F.
Cross-references 15230698 for the same application. See all 1.
Automatic Transmission Cooler Hose Assembly
Dorman 624-741 is a replacement 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 made for lower-position applications on select Chevrolet Express and GMC Savana vans, including 2003-2008 Chevrolet Express 1500 and 2003-2008 GMC Savana 1500.
Key Features
- Direct replacement automatic transmission oil cooler hose assembly
- Metal and rubber construction for flexible routing and fluid handling
- Quick disconnect ends on both sides for the specified application
- Straight hose design with natural hose color
- Rated for up to 100 psi working pressure
- Operating temperature range from -40°F to 329°F
- Fits lower-position applications on select Chevrolet Express and GMC Savana models
Detailed Description
This Dorman transmission line is engineered to move automatic transmission fluid between the transmission and the cooler while maintaining a secure seal in the factory-style connection points. Part number 624-741 uses quick disconnect ends, a straight hose layout, and a flexible metal-and-rubber construction to match the routing needs of the original lower cooler line on select vans. It is a practical replacement for vehicles that need a transmission oil cooler hose assembly for 2003-2008 Chevrolet Express 1500, 2003-2008 GMC Savana 1500, 2003-2006 Chevrolet Express 2500, and 2003-2006 GMC Savana 2500.
This part cross-references 15230698 for the same application.
Common Repair Issues
- Transmission fluid leaks at the cooler line connection
- Cracked or deteriorated hose material from heat and age
- Restricted fluid transfer between the transmission and cooler
- Damaged quick disconnect fittings on the lower transmission line
- Loss of proper transmission cooling due to a failing hose assembly
Installation Notes and Tips
Verify lower-position fitment before installation and confirm the quick disconnect ends match the factory connection style. Inspect the mating fittings and sealing surfaces for wear, corrosion, or debris before connecting the new line. This assembly does not include a gasket or seal, so reuse or replacement of related sealing components should be confirmed during service. The hose is flexible and straight, which helps with routing in the original location on Chevrolet Express and GMC Savana applications.
Quality Assurance
Dorman replacement parts are built to restore factory-style function with materials selected for fluid handling and durability in transmission cooling service. Part number 624-741 is constructed to support leak-resistant fluid delivery between the transmission and the transmission oil cooler in the listed applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2008 | Chevrolet | Express 1500 | 4.3L | V6 | Lower | — |
| 2008 | GMC | Savana 1500 | 4.3L | V6 | Lower | — |
| 2007 | Chevrolet | Express 1500 | 4.3L | V6 | Lower | — |
| 2007 | GMC | Savana 1500 | 4.3L | V6 | Lower | — |
| 2006 | Chevrolet | Express 1500 | 4.3L | V6 | Lower | — |
| 2006 | Chevrolet | Express 2500 | 4.3L | V6 | Lower | — |
| 2006 | GMC | Savana 1500 | 4.3L | V6 | Lower | — |
| 2006 | GMC | Savana 2500 | 4.3L | V6 | Lower | — |
| 2005 | Chevrolet | Express 1500 | 4.3L | V6 | Lower | — |
| 2005 | Chevrolet | Express 2500 | 4.3L | V6 | Lower | — |
| 2005 | GMC | Savana 1500 | 4.3L | V6 | Lower | — |
| 2005 | GMC | Savana 2500 | 4.3L | V6 | Lower | — |
| 2004 | Chevrolet | Express 1500 | 4.3L | V6 | Lower | — |
| 2004 | Chevrolet | Express 2500 | 4.3L | V6 | Lower | — |
| 2004 | GMC | Savana 1500 | 4.3L | V6 | Lower | — |
| 2004 | GMC | Savana 2500 | 4.3L | V6 | Lower | — |
| 2003 | Chevrolet | Express 1500 | 4.3L | V6 | Lower | — |
| 2003 | Chevrolet | Express 2500 | 4.3L | V6 | Lower | — |
| 2003 | GMC | Savana 1500 | 4.3L | V6 | Lower | — |
| 2003 | GMC | Savana 2500 | 4.3L | V6 | Lower | — |
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