Dorman 904-939 Engine Oil Cooler Gasket Set

Reliable Engine Oil Cooler Gasket Set for Ford Super Duty

The Dorman 904-939 Engine Oil Cooler Gasket Set is designed specifically for Ford F-250 Super Duty and F-350 Super Duty models. This gasket set ensures a secure seal for your engine oil cooler, helping maintain optimal engine temperature and performance.

• Includes 8 gaskets and 1 O-ring for complete sealing
• Gasket face width measures 6.5 inches for precise fit
• Black NBR gasket material with 0.235-inch thickness for durability
• Oval-shaped black O-ring with 3.6-inch inside diameter and 3.9-inch outside diameter
• Designed for one cooler inlet (0.984 in) and one cooler outlet (1.22 in)
• Installation hardware not required, simplifying replacement
• Standard replacement grade for dependable performance

Detailed Product Description

The Dorman 904-939 gasket set is engineered to provide a reliable seal for the engine oil cooler system in Ford F-250 Super Duty and F-350 Super Duty trucks. The set includes eight black NBR gaskets and one oval-shaped O-ring, designed to withstand the thermal and pressure demands of the cooling system. The gasket's 6.5-inch face width and 0.235-inch thickness ensure a tight seal, preventing leaks and maintaining proper oil flow. The O-ring features a 0.13-inch thickness and fits securely with a compression-type inlet attachment, while the outlet uses a bolt-on connection. This gasket set supports an 11-row cooling core, matching the OEM specifications for these Ford Super Duty models.

Common Applications and Issues Addressed

• Prevents engine oil leaks around the oil cooler
• Maintains proper engine oil temperature by ensuring cooler efficiency
• Eliminates coolant contamination in engine oil
• Resolves issues related to worn or damaged gaskets causing oil pressure loss
• Helps avoid engine overheating due to compromised oil cooler seals

Installation Notes and Tips

• No additional installation hardware is required for this gasket set
• Ensure all old gasket material and sealant residues are thoroughly cleaned before installation
• Check the oval O-ring for proper seating in the compression inlet to avoid leaks
• Tighten bolt-on outlet connections to manufacturer torque specifications
• Inspect the oil cooler and surrounding components for damage during replacement

Quality Assurance and Warranty

Dorman 904-939 is a standard replacement grade gasket set manufactured to meet OEM fit and function standards for Ford F-250 Super Duty and F-350 Super Duty trucks. While no core charge applies, this product is backed by Dorman's quality control processes to ensure reliable sealing performance. Please refer to Dorman's warranty policy for specific coverage details.