HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 918-545 Automatic Transmission Oil Cooler
Part #: 918-545

Dorman 918-545 Automatic Transmission Oil Cooler

⚙️ 30 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: Ram, 1500, 2500, 3500, and 4000
🔄Easy Returns — Return within 60 days for a full refund
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Reliable Automatic Transmission Oil Cooler for Ram Trucks

The Dorman 918-545 automatic transmission oil cooler is designed to maintain optimal transmission temperatures for Ram 1500, 2500, 3500, and 4000 models. Constructed from durable aluminum, this cooler ensures efficient heat dissipation and reliable performance under demanding conditions.

  • Material: High-quality aluminum core and housing
  • Dimensions: 13.7 inches length, 28.2 inches height, 1.75 inches thickness
  • Core design: 24 cooling rows for effective heat transfer
  • Inlet and outlet: Female threaded connections with 0.236 inch diameter
  • Finish: Painted black housing for corrosion resistance
  • Standard replacement grade for direct fit and function

Durable Construction and Efficient Cooling Performance

The Dorman 918-545 automatic transmission oil cooler features a robust aluminum core with 24 cooling rows, providing ample surface area to dissipate heat from transmission fluid. Its painted black finish protects against corrosion, extending the cooler's service life. The female threaded inlet and outlet connections, each with a 0.236 inch diameter, allow for secure and leak-resistant installation. With dimensions tailored for compatibility, this cooler fits Ram 1500, 2500, 3500, and 4000 trucks, ensuring proper fitment and reliable operation.

Compatible Applications and Common Uses

  • Replacement for worn or damaged transmission oil coolers on Ram 1500, 2500, 3500, and 4000 models
  • Helps prevent transmission overheating during heavy towing or hauling
  • Maintains transmission fluid temperature for improved transmission longevity
  • Addresses issues related to transmission fluid degradation due to excessive heat
  • Supports consistent transmission performance under high-load conditions

Installation Notes and Tips

This automatic transmission oil cooler is designed as a standard replacement part and requires no additional mounting hardware. Ensure that the female threaded inlet and outlet connections match your vehicle’s transmission lines for a secure fit. Properly tighten connections to avoid leaks and verify clearance around the cooler to maintain airflow. It is recommended to inspect transmission fluid levels and condition during installation.

Quality Assurance and Warranty Information

Dorman manufactures this automatic transmission oil cooler to meet standard replacement specifications, ensuring reliable performance and durability. The aluminum construction and painted finish contribute to corrosion resistance and long service life. Please refer to Dorman’s warranty policy for specific coverage details related to the 918-545 part number.

BrandDorman
Part Number918-545
MaterialAluminio
MaterialAluminum
Length13.7
Thickness1.75
FinishPainted
FinishPintado
Width1.86
Inlet Attachment TypeFemale threads
Inlet Attachment TypeRoscas hembra
Outlet Attachment TypeFemale threads
Outlet Attachment TypeRoscas hembra
Mounting Hardware IncludedNo
Mounting Hardware IncludedNon
Core MaterialAluminio
Core MaterialAluminum
Height28.2
Grade TypeReemplazo estándar
Grade TypeStandard replacement
Strap Width1.86
Electric FanNo
Electric FanNon
Core Row Quantity24
Housing ColorBlack
Housing ColorNegro
Housing ColorNoir
Inlet Diameter0.236
Outlet Diameter0.236
Contenidos del paquete1 enfriador de aceite de la transmisión
Cooling Row Quantity24
Depth1.75 in

This part fits 30 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2018Ram15005.7LV8N/A
2018Ram25005.7LV8N/A
2018Ram25006.4LV8N/A
2018Ram35005.7LV8N/A
2018Ram35006.4LV8N/A
2018Ram40005.7LV8N/A
2017Ram15005.7LV8N/A
2017Ram25005.7LV8N/A
2017Ram25006.4LV8N/A
2017Ram35005.7LV8N/A
2017Ram35006.4LV8N/A
2017Ram40005.7LV8N/A
2016Ram15005.7LV8N/A
2016Ram25005.7LV8N/A
2016Ram25006.4LV8N/A
2016Ram35005.7LV8N/A
2016Ram35006.4LV8N/A
2016Ram40005.7LV8N/A
2015Ram15005.7LV8N/A
2015Ram25005.7LV8N/A
2015Ram25006.4LV8N/A
2015Ram35005.7LV8N/A
2015Ram35006.4LV8N/A
2015Ram40005.7LV8N/A
2014Ram15005.7LV8N/A
2014Ram25005.7LV8N/A
2014Ram25006.4LV8N/A
2014Ram35005.7LV8N/A
2014Ram35006.4LV8N/A
2014Ram40005.7LV8N/A

* 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:

190766231505558035002568184883AA

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