Description
Toyota GR Supra A90 (20+) / BMW Z4 G29 (18+) Mishimoto aluminium auxiliary radiators (pair)
The Mishimoto auxiliary radiators Supra are a pair of aluminium auxiliary radiators for the 2020+ Toyota GR Supra 3.0 and the 2018+ BMW Z4 3.0. They replace the slim stock auxiliary radiators with plastic end tanks.
Each auxiliary radiator has a 40 mm brazed core with 30 percent more core volume than stock and, according to the Mishimoto product description, 180 percent more fin surface area. Full aluminium construction with TIG-welded end tanks and strutted tubes throughout the core make them resistant to flex and reduce the risk of cracks or leaks. You get the best result in combination with the Mishimoto main radiator.
Key benefits
- Direct fit for GR Supra 3.0 (2020+) and BMW Z4 3.0 (2018+)
- Sold as a pair
- 30 percent more core volume than stock
- 40 mm core, brazed aluminium
- Strutted tubes for maximum durability
- Full aluminium with TIG-welded end tanks
- For stock and modified engines
- Mishimoto Lifetime Warranty
Suitable for
Toyota GR Supra A90 and BMW Z4 G29
- Toyota GR Supra 3.0 (A90), model year 2020 onwards
- BMW Z4 3.0 (G29), model year 2018 onwards
- B58 engine
Technical specifications
- Manufacturer: Mishimoto
- Part number: MMRAD-SUP-20A
- Material: aluminium, brazed core with strutted tubes, TIG-welded end tanks, polished
- Core: 40 mm thick, 1 row
- Overall dimensions per radiator: 297 x 241 x 74 mm
- Included: 2 auxiliary radiators
Installation and delivery
Mishimoto rates installation as medium. Both auxiliary radiators fit the stock locations. After installation, refill with fresh coolant and bleed the system carefully. The installation guide (in English) is linked below. Lead time: 4 to 7 days.
Extra cooling capacity where the B58 needs it most.
Why choose these Mishimoto auxiliary radiators Supra?
The auxiliary radiators are an important part of the Supra and Z4 cooling system, but they are slim and plastic-tanked from the factory. This aluminium pair increases core volume, is stronger and perfectly complements the Mishimoto main radiator. Backed by the Mishimoto Lifetime Warranty.
Frequently asked questions
Do the Mishimoto auxiliary radiators Supra also fit the BMW Z4?
Yes, according to Mishimoto the Mishimoto auxiliary radiators Supra also fit the 2018+ BMW Z4 3.0 (G29).
How many are in the set?
Two auxiliary radiators, for left and right.
Do I also need to replace the main radiator?
You do not have to, but Mishimoto gets the most out of them in combination with the Mishimoto main radiator.
What is the lead time?
The lead time is 4 to 7 days.
Downloads and documentation
Mishimoto radiator installation guide (PDF, English)
Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.











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