Dorman 904-940 Engine Oil Cooler Gasket Set

Reliable Engine Oil Cooler Gasket Set for Ford Super Duty Vehicles

The Dorman 904-940 Engine Oil Cooler Gasket Set is designed to provide a dependable seal for your Ford E-350 Club Wagon, E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty models. Engineered to maintain optimal oil cooler performance, this gasket set helps prevent leaks and ensures efficient engine cooling.

• Includes 1 oil cooler, 2 gaskets, 11 O-rings, and 1 screen for a complete replacement
• Gaskets made from durable NBR material with thicknesses of 0.142 and 0.231 inches
• Black gaskets and O-rings with round rim shape for secure sealing
• O-ring dimensions: inside diameter 0.92 in, outside diameter 1.29 in, thickness 0.21 in
• Compatible with quick connect inlet and outlet attachment types, each sized at 0.75 inches
• Designed for engine oil coolers with 2 inlets and 2 outlets, featuring 18 cooling rows
• Standard replacement grade without included sealant or installation hardware

Detailed Product Description and Specifications

The Dorman 904-940 gasket set is specifically engineered for Ford heavy-duty trucks and vans, including the E-350 Club Wagon, E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty. The set features gaskets constructed from NBR (nitrile butadiene rubber), known for its resistance to oil and heat, ensuring a reliable seal under demanding engine conditions. The gasket face width measures 1.55 inches, providing a precise fit for the oil cooler assembly. The included O-rings have a round rim shape and are sized to fit the cooler’s quick connect inlet and outlet ports, each 0.75 inches in diameter. This gasket set supports oil coolers with two inlets and two outlets and an 18-row cooling core, matching the specifications of the original equipment.

Common Applications and Issues Addressed

• Prevents engine oil leaks around the oil cooler assembly
• Maintains proper oil pressure and cooling efficiency
• Replaces worn or damaged gaskets and O-rings in Ford Super Duty models
• Helps avoid engine overheating caused by compromised oil cooler seals
• Restores sealing integrity after oil cooler maintenance or replacement

Installation Notes and Tips

• Ensure all old gasket material and debris are thoroughly cleaned from mating surfaces before installation
• Verify compatibility with your vehicle’s oil cooler inlet and outlet quick connect fittings sized at 0.75 inches
• Use proper torque specifications for oil cooler mounting bolts to avoid gasket damage
• Sealant is not included or required; rely on the gasket and O-ring materials for sealing
• Installation hardware is not included and should be reused or replaced as needed

Quality Assurance and Warranty Information

Dorman’s 904-940 Engine Oil Cooler Gasket Set is manufactured to meet standard replacement grade requirements, ensuring reliable performance and durability. While no core charge applies, the product is backed by Dorman’s quality standards. For specific warranty details, refer to Dorman’s official warranty policy or contact the manufacturer directly.