Mishimoto Mitsubishi 3000GT Aluminium Radiator 1991-99 | MMRAD-3KGT-91

Mishimoto Performance Aluminium Radiator for Mitsubishi 3000GT

Keeping engine temperatures under control is essential on a performance vehicle such as the Mitsubishi 3000GT, especially when the engine has been modified, driven enthusiastically or used on track.

The Mishimoto MMRAD-3KGT-91 Performance Aluminium Radiator provides an upgraded cooling solution for compatible Mitsubishi 3000GT 3.0L models and replaces the original radiator with a durable, high-performance full-aluminium design.

Improved Cooling Performance

The Mishimoto radiator uses a two-row brazed aluminium core designed to improve heat transfer and maintain more consistent coolant temperatures.

Whether your 3000GT is a weekend road car, highly modified performance build or occasional track car, improving the cooling system can help reduce the risk of excessive coolant temperatures during demanding driving conditions.

Full Aluminium Construction

Unlike many factory radiators that combine aluminium cores with plastic end tanks, the Mishimoto radiator uses full aluminium construction with TIG-welded end tanks.

This design provides increased durability while also giving the engine bay a high-quality motorsport-inspired appearance.

Direct-Fit Installation

The MMRAD-3KGT-91 has been engineered around the original vehicle installation points, helping make installation straightforward without requiring extensive vehicle modification.

For owners restoring or upgrading a Mitsubishi 3000GT, this makes the Mishimoto radiator an excellent replacement for an ageing factory cooling system.

Designed for the Mitsubishi 6G72 3.0L V6

The radiator is designed for compatible vehicles equipped with Mitsubishi’s 6G72 3.0-litre V6, including naturally aspirated and VR-4 applications listed by Mishimoto.

The 3000GT VR-4’s twin-turbocharged engine can create considerable additional heat under boost, making an efficient cooling system particularly important on modified and high-performance cars.

Two-Row Aluminium Core

The radiator features a two-row aluminium core with a core thickness of approximately 1.65 inches, providing an effective balance between cooling capacity, airflow and packaging.

The complete radiator measures approximately:

• Overall Length: 19 in
• Overall Height: 29.1 in
• Overall Width: 2.15 in
• Core Length: 14.76 in
• Core Height: 28.27 in
• Core Thickness: 1.65 in

Increased Coolant Capacity

The radiator provides approximately 2.39 gallons of coolant capacity, giving the cooling system significant thermal capacity to help manage engine temperatures during demanding use.

Magnetic Drain Plug Included

Mishimoto includes a magnetic drain plug with the radiator.

The magnetic plug can help capture small metallic particles circulating within the cooling system, providing an additional level of protection and making coolant servicing easier.

Ideal for Modified 3000GT Builds

The MMRAD-3KGT-91 is particularly suitable for vehicles running performance upgrades such as:

• Increased turbocharger boost
• Upgraded turbochargers
• ECU remapping
• Performance exhaust systems
• High-flow intake systems
• Track modifications
• Higher-output engine builds

Increasing engine output generally results in additional heat generation, making cooling-system performance an important consideration when modifying the 3000GT.

Technical Specifications

Manufacturer: Mishimoto
Manufacturer Part Number: MMRAD-3KGT-91
Product Type: Performance Aluminium Radiator
Construction: Full Aluminium
Core Design: Two Row
Overall Length: 19 in
Overall Height: 29.1 in
Overall Width: 2.15 in
Core Length: 14.76 in
Core Height: 28.27 in
Core Thickness: 1.65 in
Coolant / Fluid Capacity: 2.39 gal
Inlet Diameter: 1.4 in
Outlet Diameter: 1.4 in
Drain Plug Thread: M12 x 1.5
DPI: 1298
Engine Code: 6G72
Chassis Codes: Z11A / Z15A / Z16A
Finish: Polished Aluminium
Warranty: Mishimoto Lifetime Warranty

Vehicle Compatibility

Designed for compatible:

Mitsubishi 3000GT

• 1991–1999 3000GT SL
• 1991–1999 3000GT VR-4
• 1995–1996 3000GT Spyder SL
• 1995–1996 3000GT Spyder VR-4

Dodge Stealth

• 1991–1993 Stealth ES
• 1991–1996 Stealth R/T
• 1991–1996 Stealth R/T Turbo
• 1994–1995 Stealth R/T Sport

Important Transmission Note

This radiator is intended for manual-transmission vehicles.

Automatic-transmission applications require an additional external transmission cooler because this performance radiator does not provide the same transmission-fluid cooling arrangement as some OE automatic radiators.

Always confirm vehicle specification before ordering.

What’s Included?

• 1 × Mishimoto Performance Aluminium Radiator
• 1 × Magnetic Drain Plug
• Mishimoto Lifetime Warranty

Why Upgrade Your 3000GT Radiator?

The cooling system is particularly important on ageing performance vehicles. Original radiators can deteriorate internally, become partially blocked or lose efficiency after decades of use.

Installing a performance aluminium radiator can provide:

• Improved cooling efficiency
• Improved heat dissipation
• Greater cooling capacity
• More consistent coolant temperatures
• Increased durability compared with ageing OE components
• Better support for modified engines
• Increased confidence during spirited road or track driving

Recommended For

• Mitsubishi 3000GT restoration projects
• 3000GT VR-4 performance builds
• Modified 6G72 engines
• Fast-road vehicles
• Track-day cars
• High-boost VR-4 builds
• Owners replacing an ageing factory radiator