Whether you're cruising the highway or crawling a trail through Moab in your 2018+ Jeep Wrangler JL, keeping your transmission cool should be a priority.The 8-speed transmission mated to the 2018+ Wrangler JL makes it incredibly capable both on and off-road. But in both situations, the excellent ZF transmission could be let down by the stock transmission cooler. Poor airflow and a cramped cooling stack makes the stock transmission cooler the weak link in your JL's drivetrain, but Mishimoto has the solution.Mishimoto's performance transmission cooler for the 2018+ Jeep Wrangler JL is custom designed to extract every ounce of cooling capacity from the air passing through your JL's grille. Our transmission cooler features a 93-percent increase in external tube area and a 32-percent increase in external fin area to make sure that all of the air passing over the cooler is utilized.The Mishimoto transmission cooler also features unique fins within the tubes to add even more cooling surface area and make sure that all of the fluid is in contact with a cooling surface. This feature, combined with the 83-percent increase in fluid capacity, means that no matter how low the airflow is, your transmission will stay safe and cool.Like all Mishimoto 2018+ Jeep Wrangler JL products, this performance transmission cooler is backed by our Mishimoto Lifetime Warranty, so you'll never have to worry about an overheating transmission ruining your day on the trail or road trip ever again.
Model:
MMTC-JL-18SL
Transmission Cooler, Silver, fits Jeep Wrangler 2018+ / Gladiator 2020+ PRE-SALE
£301.20
Sale Price
PRE-SALE TERMS
Payment
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Timeline
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Alaska, Hawaii, and International Customers
For our international customers and those outside the continental US (Alaska and Hawaii), orders may take longer and international shipping charges may apply. Please contact us if you have specific questions regarding your order.
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If you’ve got any further questions or concerns about your pre-sale order, our customer service team is here to help!
Thanks for your order!
-Team Mishi
Installation Difficulty:
Medium
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Installation Specs
Medium
DIFFICULTY
4 Parts
PARTS INCLUDED
- • Mishimoto Performance Transmission Cooler
- • Aluminum Spacers
- • Note Card
- • Mounting Hardware
- • Mishimoto Lifetime Warranty
1 Resource
INSTALL DOCS
Key Benefits
- Direct fit for 2018+ Jeep Wrangler JL
- 83% increase in fluid capacity over stock transmission cooler
- 93% increase in external tube area over stock transmission cooler
- 195% increase in internal fin surface area for comprehensive cooling in even the harshest conditions
- Tube-and-fin core with internal fins balances cooling and flow
- Mishimoto Lifetime Warranty
- Note: Coupons and discounts do not apply to items in pre-sale
Key Benefits
- Direct fit for 2018+ Jeep Wrangler JL
- 83% increase in fluid capacity over stock transmission cooler
- 93% increase in external tube area over stock transmission cooler
- 195% increase in internal fin surface area for comprehensive cooling in even the harshest conditions
- Tube-and-fin core with internal fins balances cooling and flow
- Mishimoto Lifetime Warranty
| Core Length (in) | 19.44 |
|---|---|
| Core Height (in) | 4.21 |
| Core Thickness (in) | 1.25 |
| Engine Codes | 2.0L 3.6L 3.0L Diesel |
| Chassis Codes | JL JT |
| Fluid Capacity (qts) | 0.5 (total cooler capacity including lines where applicable) |
Mishimoto Performance Transmission Cooler
Aluminum Spacers
Note Card
Mounting Hardware
Mishimoto Lifetime Warranty
Aluminum Spacers
Note Card
Mounting Hardware
Mishimoto Lifetime Warranty
August 26, 2020
Despite its simple appearance, improving upon the stock 2018+ Jeep Wrangler JL transmission cooler will take some clever engineering. In many cases, the solution to extracting more efficiency from a heat exchanger is to make it bigger, but with the cramped cooling stack of the JL, the size of our cooler would be limited.
In our last post, we looked at the stock 2018+ Jeep Wrangler JL transmission cooler and its home in the 2.0L Wrangler. Our performance trans cooler will fit all of the available engines and the 2020+ Gladiator, but the complexity of the 2.0T's cooling stack makes it the perfect R&D vehicle. That complexity also restricts how much we can change the dimensions of the transmission cooler.
With the stock transmission cooler removed, we measured the space it occupied and calculated how much larger our cooler could be. The length of the cooler is effectively fixed by the line connections on the passenger side and the mounting tabs on the driver's side. In the vertical plane,
August 11, 2020
When we last saw our 2018+ Jeep Wrangler JL performance transmission cooler, it was nothing more than a box, constructed from aluminum u-channel, with plastic end tanks glued to it. This time, however, we'll be getting our hands on a fully functioning production sample.
In our last post, we began the design process for our performance transmission cooler and created a prototype. Thanks to the JL's cramped cooling stack, our ability to enlarge the transmission cooler was severely limited in the vertical and horizontal planes. However, we were able to significantly increase the thickness of the core from 19mm to 32mm. This 68% increase in core thickness would give the Mishimoto cooler a big leg up on the stock unit, but we couldn't stop there.
The cramped cooling stack of the JL also means that airflow through the transmission cooler's core is limited. With less airflow through the cooler, a thicker core won't be as efficient as it usually would. To counter this problem and make the most
July 15, 2020
Engines get a lot of press these days. Every manufacturer wants to flaunt their latest, most fuel-efficient, technologically advanced, or powerful engine yet. The hype is even more prominent when manufacturers make drastic changes to a long-standing model, like the 2018+ Jeep Wrangler.
When FCA announced the 2018+ Wrangler JL in late 2017, all the journalists were clamoring for headlines on the new 2.0L, turbocharged, mild-hybrid engine. How would the mild hybrid perform offroad? Would the turbo lag make it a dog in stop and go traffic? What about that 24-volt power system? Everybody forgot about the 3.6L Pentastar that's powered the Wrangler, and over 20 other models, for almost a decade. But the 3.6L Pentastar wasn't the only thing forgotten in the fanfare over the new 2.0T.
No matter the vehicle, transmissions never manage to garner the same amount of limelight that engines and other high-profile components do. Nobody wants to think about what happens after all the explosions and fun
Mishimoto Automotive (“Mishimoto”) warrants its products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorized dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.
For our complete warranty policy, please click here.
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£340.80
(Incl. VAT)