Dorman 800-604 Automatic Transmission Oil Cooler Line Connector

Reliable Automatic Transmission Oil Cooler Line Connector

The Dorman 800-604 automatic transmission oil cooler line connector is engineered to provide a durable and precise connection for transmission cooling systems. Designed specifically for select Buick, Cadillac, Chevrolet, GMC, Hummer, Oldsmobile, and Pontiac models, this steel connector ensures efficient fluid transfer and system integrity.

• Constructed from high-strength steel for durability and corrosion resistance
• Features a straight fitting angle for straightforward installation
• Includes quick disconnect and male thread fittings for secure attachment
• Thread sealer applied to prevent leaks and maintain system pressure
• Compatible with transmission lines requiring 0.375 inch and 1/4-18 inch thread fittings

Durable Steel Construction and Precise Fitment

The Dorman 800-604 transmission line connector is made from steel, providing the necessary strength to withstand high pressure and temperature conditions typical in automatic transmission cooling systems. Its design incorporates both external and internal profile ends, with a 0.68 inch outside diameter, ensuring a tight and reliable seal. The straight fitting angle simplifies routing and installation in tight engine compartments. This connector is equipped with a quick disconnect fitting on one end and a male thread fitting on the other, sized at 0.375 inches and 1/4-18 inch thread respectively, to match factory specifications on compatible vehicles.

Compatible Vehicle Applications

This transmission oil cooler line connector is compatible with a wide range of GM vehicles, including but not limited to the Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, Buick Rainier, Pontiac Grand Prix, and Hummer H2. It fits models such as the Chevrolet Avalanche, Suburban 1500, and Trailblazer, as well as the GMC Canyon and Envoy XL. The Dorman 800-604 is designed to meet the exacting requirements of these vehicles’ transmission cooling systems.

Common Issues Addressed by This Connector

• Leaking transmission fluid due to worn or damaged line connectors
• Transmission overheating caused by poor fluid circulation
• Loose or corroded fittings leading to pressure loss
• Difficulty in disconnecting or reconnecting transmission lines during maintenance
• Replacement of cracked or bent connectors to restore system integrity

Installation Notes and Tips

Installation of the Dorman 800-604 connector requires no additional mounting hardware, as it is designed to integrate directly with existing transmission lines. Ensure that the quick disconnect fitting is fully engaged and the male thread is tightened to manufacturer torque specifications. The included thread sealer helps prevent leaks, but it is recommended to inspect all connections for tightness after installation. Use appropriate tools to avoid damaging the steel fittings during installation or removal.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 800-604 transmission line connector undergoes rigorous quality control to ensure proper fit and function. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship, supporting long-term vehicle maintenance needs.