Description
Product Overview
The Hayden Automotive Transmission Cooler is engineered for durability and performance. Constructed from precision‑machined aluminum, it measures 11.6 x 11 x 0.75 inches and weighs 2.9 pounds, offering a compact footprint without sacrificing cooling capacity. The unit includes six male flare fittings for hard‑plumb integration and pre‑drilled mounting brackets that simplify installation on a variety of towing hitch and engine oil cooler kits.
Usage
Designed for Class “A” motor homes, large travel trailers, and 5th‑wheel trailers, this cooler excels in applications where GVWR reaches up to 30,000 lb and towing capacities approach 10,000 lb. It efficiently dissipates heat from transmission and engine oil during long hauls, steep grades, and high‑temperature environments, ensuring optimal performance and longevity of drivetrain components.

Why Choose Us
Hayden Automotive combines rigorous engineering with high‑quality materials, delivering a cooler that meets demanding OEM standards. The compact, machined design reduces weight and space requirements, while the six flare fittings provide a secure, leak‑free connection. Pre‑drilled brackets cut installation time, and the unit’s proven reliability is reflected in a 4.7‑star rating from over 100 verified customers.
Key Features
- Compact machined aluminum construction for lightweight durability
- Dimensions 11.6″ x 11″ x 0.75″ and weight only 2.9 lb
- Six male flare fittings enable hard‑plumb integration
- Pre‑drilled mounting brackets for quick, tool‑free installation
- Ideal for Class A motorhomes, large travel trailers, and 5th‑wheel rigs
FAQ
What vehicles is this cooler compatible with?
The cooler is suited for Class “A” motorhomes, large travel trailers, and 5th‑wheel trailers with GVWR up to 30,000 lb and towing capacities up to 10,000 lb.
How do I install the cooler?
Use the pre‑drilled mounting brackets to secure the unit to the hitch or frame, then connect the six male flare fittings to the existing oil lines for a hard‑plumb setup.
Does the cooler require additional accessories?
All necessary fittings are included; you may need standard hose clamps and compatible oil lines if not already present on your vehicle.
What is the warranty on this product?
Hayden Automotive offers a one‑year limited warranty covering manufacturing defects.
Can this cooler handle high‑temperature environments?
Yes, the machined aluminum design efficiently dissipates heat, making it reliable for prolonged high‑temperature operation.




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