Description
Lexus IS300 (01-05) Mishimoto aluminium radiator
The Mishimoto radiator IS300 is an all-aluminium radiator for the 2001-2005 Lexus IS300 3.0 with the 2JZ-GE. It is designed specifically for the IS300 and fits without cutting or modification.
The two-row 36 mm core is fully brazed and the end tanks are TIG-welded. According to Mishimoto this gives 30 percent more cooling than the stock radiator, with greater fluid capacity and better heat dissipation. That applies to a stock 2JZ-GE and just as well to a modified engine or a track project. The included 1.3 bar high-pressure radiator cap raises the boiling point of the coolant.
Key benefits
- Direct fit for the 2001-2005 Lexus IS300 3.0
- Full aluminium with TIG-welded end tanks
- Two-row 36 mm core, fully brazed
- 30 percent more cooling according to Mishimoto
- For stock and modified engines
- 1.3 bar high-pressure radiator cap included
- Mishimoto Lifetime Warranty
Suitable for
Lexus IS300 (XE10)
- Lexus IS300 3.0, model years 2001 to 2005
- Engine 2JZ-GE, chassis code JCE10L
- Manual transmission only: for automatics Mishimoto recommends a universal transmission cooler kit
- The IS200 and Toyota Altezza are not mentioned by Mishimoto
Technical specifications
- Manufacturer: Mishimoto
- Part number: MMRAD-IS300-01
- Material: aluminium, fully brazed core, TIG-welded end tanks
- Core: 375 x 708 x 36 mm, 2 rows
- Overall dimensions: 505 x 739 x 49 mm
- Inlet and outlet: 36 mm
- Drain plug: M12 x 1.5
- Included: Mishimoto radiator, Mishimoto 1.3 bar radiator cap
Installation and delivery
Mishimoto rates installation as medium. The radiator fits the stock location without cutting or modification. After installation, refill with fresh coolant, bleed the system carefully and check the hose connections after the first drives. The Mishimoto installation guide (in English) is linked below. Lead time: 4 to 7 days.
A 2JZ deserves a radiator that is just as indestructible.
Why choose this Mishimoto radiator IS300?
The stock IS300 radiator has a plastic end tank that weakens over the years. This Mishimoto radiator is all aluminium, cools 30 percent better according to Mishimoto and comes complete with a high-pressure cap. Backed by the Mishimoto Lifetime Warranty.
Frequently asked questions
Does the radiator fit the IS200 or Toyota Altezza?
Mishimoto lists the Mishimoto radiator IS300 only for the 2001-2005 Lexus IS300 3.0 with 2JZ-GE. The IS200 and Toyota Altezza are not mentioned.
Can I use this radiator with an automatic?
This radiator is intended for manual transmission cars. For automatics Mishimoto recommends a universal transmission cooler kit.
What is in the box?
The aluminium radiator and a Mishimoto 1.3 bar radiator cap.
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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