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❄️ Keep your transmission chill and your ride smooth — don’t let heat slow you down!
The Hayden Aluminum Automotive 403 Ultra-Cool Tube and Fin Transmission Cooler is a compact, high-efficiency cooling solution designed for mid-size and full-size vehicles, including pick-ups. Featuring a durable aluminum construction, 3/8" inlet/outlet for OEM compatibility, and pressure testing up to 150 PSI, it ensures reliable transmission temperature control. The kit includes everything needed for easy installation, making it a top choice for professionals seeking to protect their vehicle’s transmission and enhance performance under heavy loads or towing conditions.

| ASIN | B000C39C9A |
| Best Sellers Rank | #85,752 in Automotive ( See Top 100 in Automotive ) #16 in Automotive Replacement Transmission Cooling Lines |
| Brand | Hayden Automotive |
| Brand Name | Hayden Automotive |
| Color | Aluminum |
| Customer Reviews | 4.5 out of 5 stars 2,414 Reviews |
| Global Trade Identification Number | 00036752004034, 00367520040344 |
| Included Components | Hayden Automotive 403 Ultra-Cool Tube and Fin Transmission Cooler |
| Item Dimensions L x W | 12.5"L x 12.5"W |
| Item Length | 12.5 inches |
| Item Type Name | Ultra-Cool Tube and Fin Transmission Cooler |
| Item Weight | 1.8 pounds |
| Manufacturer | Hayden Automotive |
| Manufacturer Warranty Description | 1 year or 12K Miles |
| Material | Aluminum |
| Material Type | Aluminum |
| Maximum Pressure | 150 psi |
| Nominal Wall Thickness | 1 |
| Outside Diameter | 0.75 inches |
| Product Dimensions | 12.5"L x 12.5"W |
| UPC | 036752004034 |
| Unit Count | 1 Count |
O**D
Best bang for buck! Works grear & easy installation!!
Great transmission cooler. Have had it on now for a few days I took it upon my self to see fluid temp difference. Before trans fluid after a good 30 min drive be hot now its luke warm. I am using this on my 2003 nissan sentra 1.8 automatic. Everything in boxed worked great. Clamps are good but are a pain to tightned down but for the peice I cant complain. Also if you bend a fin dont stress simply use a straight screw driver and bend ot back close as form as possible wont hurt it any.
J**N
Helps keep the trans fluid cool! Works!
Going strong! Helped save my 2004 Volvo XC70 AW55 transmission! Prior to install I had rough shifting after the transmission got really warm from stop/go traffic. Now I have much more faith in my vehicle.
W**2
Can't be beat for the price!
Install took about 30 min on a 2004 Grand Cherokee with the 4.7 non-HO and the 545rfe trans. I used fuel clamps in lieu of the included worm gear clamps, as they are a more positive grip without cutting into the hose if you were to over tighten them. I also used a 6AN fiberglass braid covered poly line, mostly because it looks better. However, having included my upgrades, you can still buy with confidence and use what the kit supplies. I have installed several Hayden coolers over the years with what was in the kit without issue. Techtip: If your vehicle has a factory tow package, it likely already has a cooler in your radiator. Assuming that doesn't have a leak, it is generally recommended that you still use the factory cooler in conjunction with the aux Hayden cooler to prevent over cooling. A lot of trannys are designed to run at a certain temp - over cooling, especially in winter, may prevent your trans from shifting into overdrive(s) thus killing your MPG. From trans: to factory cooler, then aux cooler, then return to trans. Also, if you are mounting with the in/outlets horizontal, be sure and use the lower connection as the inlet. This ensures the entire cooler fills without air. If you use the top as the inlet, you can get a "waterfall" effect, filling cooler capacity with air and reducing its efficiency. You can install vertical as well, but in that case be sure and put the in/oulets on the top to prevent the same effect.
T**P
Works
Works
T**M
Amazon
Once again amazon proves to be superior in bringing me amother quality product.. I bought a transmission cooling kit for my Nissan rogue fit perfectly installed easier than I could imagine I didn’t have a single leak or missing part it’s nice to know they are still quality parts out there and Amazon once again prove that fact to me thank you so much for making my repair stress-free
D**D
Great cheap heat exchanger
I'm not using this for my SUV. It is being used as a heat exchanger for an ice water bath. Works great. Does not leak. I rinsed it out as someone else said to do, but nothing came out. It was clean inside from the beginning. Since I change out the ice water every two days it would be easy to see any residue. Not sure how good it would be in a vehicle, but I didn't buy it for that. Happy with the product.
A**R
Love it!
Going on 6 years strong, this is and has been very benefitting for my Jeep XJ!
P**L
A new cooler and a radiator for any Nissan Sentra CVT transmission is a must if you plan on keeping
A new cooler and a radiator for any Nissan Sentra CVT transmission is a must if you plan on keeping in a long time I put pictures on here looks like they went away my 2017 Nissan Sentra S 1.8 L It only came with a cooler that has two prongs coming out of it for cooling the CVT transmission I bought one has four and added the cooler radiator this made a world of difference it’s a must before doing this the car that has only 30,000 miles on it still like brand new when you get to 75 miles an hour it felt like you couldn’t go faster after I install those two parts car runs like it should. You also need to replace the CVT transmission fluid every 35 to 40,000 miles this means a new round filter under the driver tire and a new pan filter in your transmission pan this car takes about 9 quarts of CBT oil but you add three at a time drain itPut three back in start it put your brakes on and go through all the gears really slow five seconds each gear repeat the process drain put 3 quarts in to you equal 9 quarts there’s a video on YouTube explain this better that’s my experience with my Nissan besides that thank it’s gonna be a good car now
Trustpilot
2 months ago
3 days ago