How to find the right Towing Hitch Engine Oil Coolers & Kits AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Towing Hitch Engine Oil Coolers & Kits
- Size by towing weight
- Choose a cooler whose manufacturer rating (usually given by GVW or GCWR) meets or exceeds your loaded truck plus trailer weight. Manufacturers size these kits by weight, and undersized coolers overheat on long grades.
- Existing factory cooler
- Check whether the truck already has a factory tow-package auxiliary cooler. If you add one, plumb it in series after the radiator's in-tank cooler. Series plumbing keeps warm-up behavior intact and adds capacity without bypassing the factory circuit.
- Line connection type
- Modern trucks often use OE quick-connect cooler lines. Confirm the kit includes matching adapters or buy them separately. Cutting quick-connect lines to fit barb kits creates weak points.
- Core and mounting
- Prefer stacked-plate coolers with bracket mounts in front of the condenser or radiator, in direct airflow. Towing loads need maximum heat rejection and vibration-proof mounting.
- Fluid temperature monitoring
- Pair the cooler with a transmission temperature gauge or a scan tool readout when towing. Without monitoring you can't tell whether the cooler is keeping up.
Brands that matter
- B&M: SuperCooler stacked-plate kits are a long-standing towing choice.
- Hayden Automotive: Towing-rated transmission cooler kits sized by vehicle weight.
- Derale: Series 8000 plate and fan-assisted kits for heavy towing.
- Flex-a-lite: Transmission coolers, including fan-equipped units for low-speed towing.
- Dorman: OE-style quick-connect adapters and replacement cooler lines.
What to avoid
- Kits that bypass the radiator's in-tank cooler in cold climates
- Coolers rated below your combined towing weight
- Barb-and-clamp kits spliced into factory quick-connect lines without proper adapters
Questions
Does this cool engine oil or transmission fluid?
Despite the category name, most towing cooler kits cool automatic transmission fluid. Engine oil cooling for towing usually needs a separate oil cooler kit with a sandwich plate.