SKU: 20032052191

do88 Transmission cooler - BMW G-Series / Toyota GR Supra A90

Sale price$261.00 Regular price$290.00
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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30

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Description

do88 Transmission cooler - BMW G-Series / Toyota GR Supra A90Upgrade your cars performance with the do88 Performance Transmission Cooler! Background Designed specifically for BMW M340i Z4 and Toyota GR Supra, the do88 Automatic Transmission Cooler ensures smooth and efficient shifting. While the latest Supra M340i Z4 lacks the manual gearbox, the swift ZF 8HP transmission coupled with the B58 compensates impressively. Yet, like all sports cars, heat remains a significant challenge, especially in tuned cars that

Upgrade your cars performance with the do88 Performance Transmission Cooler!

Background

Designed specifically for BMW M340i/Z4 and Toyota GR Supra, the do88 Automatic Transmission Cooler ensures smooth and efficient shifting. While the latest Supra / M340i / Z4 lacks the manual gearbox, the swift ZF 8HP transmission coupled with the B58 compensates impressively. Yet, like all sports cars, heat remains a significant challenge, especially in tuned cars that generate more heat during rigorous street, track, or drag strip driving.

Our solution

The 2019+ BMW M340i/Z4 and GR Supra models come with an external liquid-to-air transmission cooler. However, for tuned cars, the generated heat can often exceed the OE cooler's capacity. Recognizing this, our engineers redesigned the transmission cooler's core, increasing its volume by 184% and the cooling surface area by 176% while maintaining similar fluid pressures. We upgraded the tubes with harmonica tubes with internal channels, ensuring optimal cooling efficiency. Whether you're spending a day on the track or enjoying a drive through the backroads, the do88 Transmission Cooler helps keeping the temperatures in check.

Installation

Installing the much larger do88 Performance Transmission Cooler is hassle-free, requiring no modifications (see installation instructions).

Key Features:

  • Core volume increased by 184% and the active cooling area by 176% compared to the original cooler (OE).
  • Harmonica tubes ensure optimal oil flow and maximum surface area contact.
  • Compatible with the do88 Front Intercooler Radiator (WC-400).
  • OEM-style Quick Connect inlet/outlet connections.
  • Drop-in fit, eliminating the need for modifications.
Download Installation Guide 
    Shipping Notes
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    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
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    SKU: 20032052191

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    Barb
    Whiting, US
    ★★★★★ 5
    SOOOO COMFORTABLE
    Size: Large, Color: 2 Black,2 Blue,light Coffee
    LOVED THESE SO MUCH. FIRST, BOUGHT THEM IN A MEDIUM (I AM 5'3 AND 143 LBS -- WEIGHT GAIN OF 10 LBS DUE TO COVID 19), BUT THEY DID CURL UP. IT DIDN'T MATTER...I COULDN'T EVEN 'FEEL' ANYTHING DIFFERENT FROM THE MOMENT I PUT THEM ON -- THEY FLEX RIGHT WITH YOU -- SO SOFT. LOVED THEM SO MUCH, I BOUGHT THEM IN A LARGE. I WILL EITHER WEAR THEM TO BED...OR UNDER MY DRESSES. BOTH SIZES FEEL SO COMFORTABLE -- DOESN'T MATTER WHICH SIZE. IF THEY DON'T HAVE YOUR DESIRED SIZE, TRY THE NEXT SIZE -- YOU WON'T FEEL ANY PINCHING OR DISCOMFORT. AGAIN...SOOO SOFT.
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    Reviewed in the United States on August 21, 2020
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    Amazon Customer
    Lexington, US
    ★★★★★ 5
    Great product
    Size: Small, Color: Light Coffee,grass Green,blue,orange,black
    Softest underwear I’ve ever worn
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    Reviewed in the United States on March 22, 2026
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    Osmara
    Dallas, US
    ★★★★★ 5
    Perfect UV Protection and Comfort for Outdoor Activities
    Color: Mist Green, Size: Medium
    I recently purchased this UV long sleeve shirt for outdoor activities, and I'm extremely satisfied with my choice. It offers excellent UV protection with a UPF rating of 50+, keeping me safe while at my sons soccer game. The lightweight, breathable fabric kept me cool and comfortable, and its moisture-wicking properties worked well. The fit is was a little flowy. While it is slightly pricier than other options, the quality and performance make it worth the investment. I highly recommend this shirt for anyone seeking a stylish and functional solution for outdoor adventures!
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    Reviewed in the United States on May 28, 2025
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    Dee K.
    Alexandria, US
    ★★★★★ 5
    Ideal fabric, great fit.
    Color: Light Pink, Size: Medium
    Loose fitting back is ideal for hiking, walking and other outdoor activities. The fabric is breathable - great for working out. Even though the back if loose fitting, the front and boatneck fit well.
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    Reviewed in the United States on May 20, 2026
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    B Sieling
    Charlottesville, US
    ★★★★★ 5
    Prefect coverage and cooling.
    I have to have sun protection and I live in the south. This is perfect for my daily walks. Covers what I don’t want to put sun screen on, the loose fit hides tummy area and loose in back. Liked it so much, I just ordered two more. Soft, silky, and Very cooling and lightweight.
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    Reviewed in the United States on March 26, 2026

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