Mishimoto MMRAD-IS300-01 Perf Alum Radiator for 2001-2005 Lexus IS300 3.0L

Vehicle Fitment

• 2001-2005 Lexus IS300 (Base/SportCross, 2JZ-GE 3.0L I6, RWD, Manual trans only)

Features

• Direct bolt-in OEM form factor - no cutting or trimming
• 100% brazed aluminum core and polished TIG-welded end tanks
• Dual-row 1.42"-thick core for up to 30% more cooling efficiency
• Includes high-pressure 1.3 bar radiator cap - raises coolant boiling point
• Lifetime warranty from Mishimoto for long-term reliability
• Enhanced heat exchange for stock or modified engines
• Medium installation difficulty - fits with factory mounting points
• Optimized for manual-transmission cooling needs

Specifications

• Overall size: 29.1" H x 19.9" W x 1.92" D
• Core size: 27.87" x 14.76"
• Coolant capacity: 2.24 gal
• Rows: 2; Core thickness: 1.42"
• Inlet/outlet: 1.4" diameter
• Drain plug: M12 x 1.5 thread
• Core material: Brazed aluminum; Tanks: TIG-welded aluminum
• DPI spec: 2356

Included Components

• 1x MMRAD-IS300-01 radiator assembly
• 1x 1.3 bar Mishimoto radiator cap
• 1x Lifetime warranty documentation

Product Description

The Mishimoto MMRAD-IS300-01 performance aluminum radiator is a direct-fit upgrade for 2001-2005 Lexus IS300 models with the 2JZ-GE 3.0 L inline-6 and manual transmission. Featuring a full brazed, dual-row core and polished TIG-welded end tanks, this radiator boosts cooling efficiency by approximately 30% over the OEM plastic/aluminum unit - ideal for spirited driving or track use.

Fitment is confirmed for Base and SportCross trims in RWD with manual transmission only; automatic-transmission vehicles require Mishimoto's universal transmission cooler kit. All factory mounting points remain intact, and the included high-pressure 1.3 bar cap raises coolant boiling point for added thermal headroom. Installation is rated moderate and retains OEM reliability with the added assurance of Mishimoto's lifetime warranty.