HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 918-231 Automatic Transmission Oil Cooler
Part #: 918-231

Dorman 918-231 Automatic Transmission Oil Cooler

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⚙️ 2 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Dodge, Ram 1500
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Overview of Dorman 918-231 Automatic Transmission Oil Cooler

The Dorman 918-231 automatic transmission oil cooler is designed specifically for Dodge Ram 1500 models, providing reliable cooling performance to maintain optimal transmission temperatures. Constructed from durable aluminum with a black finish, this cooler supports efficient heat dissipation for extended transmission life.

  • Compatible with Dodge Ram 1500 vehicles
  • Aluminum construction with black finish for corrosion resistance
  • Core features 15 rows for effective cooling
  • Dimensions: 20.2 inches width, 5.5 inches height, 0.5 inch depth
  • Inlet and outlet diameters both 18.375 inches with female threaded attachments
  • Standard replacement grade part
  • Installation hardware not included

Detailed Product Description

The Dorman 918-231 automatic transmission oil cooler is engineered to meet the cooling requirements of Dodge Ram 1500 trucks. Its aluminum core with 15 rows ensures efficient heat exchange, helping to prevent transmission overheating during heavy-duty or extended driving conditions. The cooler measures 20.2 inches in width, 5.5 inches in height, and 0.5 inch in depth, making it a direct fit replacement for compatible models. Both the inlet and outlet feature 18.375-inch diameters with female threaded attachments, facilitating secure and leak-free connections. The black finish adds a layer of protection against environmental elements, contributing to the cooler's durability.

Common Applications and Problem Solving

  • Prevents transmission fluid overheating under heavy load or towing conditions
  • Reduces risk of transmission failure due to excessive heat
  • Replaces damaged or leaking transmission oil coolers
  • Maintains consistent transmission fluid temperature for smoother shifting
  • Helps extend transmission component lifespan by improving cooling efficiency

Installation Notes and Tips

This Dorman transmission oil cooler is designed as a direct replacement for Dodge Ram 1500 models. Installation requires compatible fittings with female threaded connections. Note that installation hardware is not included, so ensure you have the necessary fittings and tools before beginning the replacement. Properly secure all connections to avoid leaks and verify fluid levels after installation. It is recommended to consult the vehicle’s service manual for specific installation procedures and torque specifications.

Quality Assurance and Warranty

The Dorman 918-231 automatic transmission oil cooler is manufactured to meet standard replacement part specifications, ensuring reliable performance and fitment. Made from aluminum with a protective black finish, it offers corrosion resistance suitable for automotive environments. While installation hardware is not included, the product is backed by Dorman’s quality standards. Please refer to Dorman’s official warranty policy for detailed coverage information.

BrandDorman
Part Number918-231
Core Row Quantity15
Depth0.5 in
Friction Material ThicknessBlack
Height5.5 in
Inlet Attachment TypeFemale Threads
Inlet Diameter18.375
Installation Hardware IncludedNo
Item GradeStandard Replacement
MaterialAluminum
Outlet Attachment TypeFemale Threads
Outlet Diameter18.375
Package ContentsTransmission Cooler
Width20.2

This part fits 2 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2003DodgeRam 15005.9LV8N/Awo/Sales Code NMC (Heavy Duty Engine Cooling); wo/Sales Code NMS (Severe Duty Engine Cooling)
2002DodgeRam 15005.9LV8N/Awo/Sales Code NMC (Heavy Duty Engine Cooling); wo/Sales Code NMS (Severe Duty Engine Cooling)

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

52028808ABFC1317TSKTOC026

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.