Hayden 689 transmission cooler side view shows compact, secure installation.
Hayden 689 transmission cooler front view highlights sturdy, space-saving design.
Hayden 689 cooler mounted brackets demonstrate easy pre-drilled mounting.
Hayden 689 cooler six male flare fittings enable secure hard-plumbed install.
Hayden 689 cooler supports towing with efficient heat transfer in a compact form.
Hayden 689 transmission cooler side view shows compact, secure installation.
Hayden 689 transmission cooler front view highlights sturdy, space-saving design.
Hayden 689 cooler mounted brackets demonstrate easy pre-drilled mounting.
Hayden 689 cooler six male flare fittings enable secure hard-plumbed install.
Hayden 689 cooler supports towing with efficient heat transfer in a compact form.

Hayden Automotive 689 Universal Add-On Transmission Cooler — 11.6-inch x 11-inch x 0.75-inch (Not OE Replacement)

Hayden Automotive presents the 689 Universal Add-On Transmission Cooler, a compact yet capable plate-and-fin unit designed to...
Vendor: Hayden Automotive
Availability: In stock
£106.70
£106.70
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Subtotal: £106.70
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Hayden 689 transmission cooler side view shows compact, secure installation.

Hayden Automotive 689 Universal Add-On Transmission Cooler — 11.6-inch x 11-inch x 0.75-inch (Not OE Replacement)

£106.70
Hayden 689 transmission cooler side view shows compact, secure installation.
Hayden 689 transmission cooler front view highlights sturdy, space-saving design.
Hayden 689 cooler mounted brackets demonstrate easy pre-drilled mounting.
Hayden 689 cooler six male flare fittings enable secure hard-plumbed install.
Hayden 689 cooler supports towing with efficient heat transfer in a compact form.

Hayden Automotive 689 Universal Add-On Transmission Cooler — 11.6-inch x 11-inch x 0.75-inch (Not OE Replacement)

£106.70
Description
Description
x

Hayden Automotive presents the 689 Universal Add-On Transmission Cooler, a compact yet capable plate-and-fin unit designed to support demanding towing scenarios. Measuring 11.6 inches by 11 inches with a 0.75 inch thickness (about 19 mm), it fits tighter engine bays and RV compartments while delivering a substantial heat exchange surface. The kit includes the cooler, hose, and mounting hardware, providing a ready-to-install solution for curious DIY setups or professional installs.

Key design highlights

  • Size and durability: 11.6 by 11 by 0.75 inches, built for heavy duty use
  • 13.5 plate surface with a plate-and-fin core designed for efficient heat transfer
  • Patented Flow Path Design to boost heat transfer while minimizing pressure drop
  • Includes cooler, hose assembly, and mounting hardware for a complete install

Rugged compatibility for heavy tow setups

This add-on cooler is crafted for Class A motor homes, large travel trailers, and fifth wheel trailers. It supports demanding towing when combined with your vehicle’s cooling loop, with GVWR up to 30,000 pounds and towing capability up to 10,000 pounds.

  • Pre-drilled mounting brackets for straightforward installation
  • Six male flare fittings allow a secure hard plumb into the system
  • Compact, robust design that works in a range of engine bays and trailer compartments

Real-world use scenarios

On long highway climbs, in summer heat, or during continuous towing, this cooler is designed to help manage transmission temperatures. RV owners and tow enthusiasts may experience more stable performance under load, depending on the overall system setup.

  • RV caravans and camping trips with steady towing demands
  • Mountain grades and hot weather conditions

Note: This is an add-on cooler, not a direct OE replacement. It is designed to supplement your existing cooling system and requires compatible hoses and fittings.

FAQ

Q: What vehicles is the Hayden 689 cooler suitable for?

A: Suitable for Class A motor homes, large travel trailers, and 5th wheels; GVWR up to 30,000 lb and towing up to 10,000 lb.

Q: Is this cooler a direct OE replacement?

A: No. It is an add-on cooler designed to supplement existing cooling capacity; includes mounting hardware and hose for installation.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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