Wish Lists
0 My Cart

Your cart is currently empty.

Continue shopping
Total: $0.00
View cart
Toggle menu
0
  • Home
  • Performance Koyo Radiator, Lancer Evolution 4-9, 48mm, (KH031610U06)
Performance Koyo Radiator, Lancer Evolution 4-9, 48mm, (KH031610U06)
Click to zoom in
Load image into Gallery viewer, Performance Koyo Radiator, Lancer Evolution 4-9, 48mm, (KH031610U06)

Have Questions? Call Us Now

+61275010174

  • Guaranteed Fitment

    Always the correct part

  • In-House Experts

    We know our products

  • Added Value

    Mounting, Balancing

  • Free Delivery

    For selected products

Performance Koyo Radiator, Lancer Evolution 4-9, 48mm, (KH031610U06)

KOYO-KH031610U06
In stock
$561.43
Additional charges will be calculated at checkout based on your delivery address.
$561.43
customers are viewing this product
Performance Koyo Radiator, Lancer Evolution 4-9, 48mm, (KH031610U06)
Description

Performance Koyo Radiator for Lancer Evolution 4–9, 48mm (KH031610U06)

The Performance Koyo Radiator for Lancer Evolution 4–9 (KH031610U06) is the ultimate cooling upgrade for serious Mitsubishi Evo owners. Whether you're running a stock setup or a high-boost build with a bigger turbo, this Koyo Evo radiator delivers unmatched cooling performance and reliability. With a 48mm HH Series high-density core, it’s engineered to keep temps low under load—ideal for New Zealand’s track days, backroad blasts, and everything in between.

Built in Koyorad’s own Japanese facilities, this Koyo Evo radiator is hand-assembled, Nocolok brazed, and TIG-welded using premium-grade aluminium. It’s designed as a direct-fit replacement, with application-specific mounting points for quick installs and no fabrication required. Perfect for those with big builds, the repositioned upper outlet also clears larger turbo setups, especially on Evo 7–9.

Compatible with Evo 4–6 (requires Evo 7–9 fan) and Evo 7–9 models (using Evo 6 radiator hoses), this Koyo Evo radiator gives Kiwi tuners room to grow while keeping the stock fan mount option intact. It even includes a 1/8” NPT sensor port (with plug)—ready to pair with aftermarket temp gauges. It’s a no-nonsense, high-performance solution built for New Zealand roads and racetracks.

Features and Benefits

48mm HH Series High-Density Core – Maximises cooling efficiency for street and track use.

All-Aluminium Construction – Resists corrosion and delivers long-term reliability under high heat and pressure.

Nocolok Brazed & TIG-Welded – Hand-built in Japan with high-precision welds for strength and vibration resistance.

1/8” NPT Sensor Port (Plug Included) – Allows for easy integration of aftermarket temperature sensors.

Direct OE Fitment – No cutting or fabrication needed; bolts directly into factory mounting points.

Billet Filler Neck – Precision-machined for a better seal and increased durability.

Turbo Clearance Friendly – Repositioned outlet on Evo 7–9 fitment clears large turbo setups with ease.

Technical Specifications

Feature Specification
Part Number KOYO-KH031610U06 (International), KOYO-HH030939 (Koyorad USA)
OEM Cross-Reference MB890505, MB890506
Core Thickness 48mm HH Series
Construction Fully Aluminium – Hand TIG-Welded, Nocolok Brazed
Filler Neck Billet Aluminium
Sensor Port 1/8” NPT Female (Plug Supplied)
Mounting OE-specific for factory fans, hoses, and shrouds
Fitment 1995–2001 Evo 4–6 (requires Evo 7–9 fan), 2001–2007 Evo 7–9 (uses Evo 6 hoses)
Fan Compatibility Evo 7–9 stock fan mounts, but not compatible with stock intake setup
Transmission Note Automatic models require external transmission cooler
Warranty Manufacturer’s Warranty

 

REVIEWS

T.N.
Been running this Koyo Evo radiator in my Evo 5 down in Dunedin—zero issues even after pushing hard up to Signal Hill. Install was smooth with the Evo 7 fan, and coolant temps are super stable now. Quality is top-notch.

Tim N.
Dunedin, OTA
★★★★★

S.H.
Fitted this in my Evo 8 for better turbo clearance, and it worked a treat. Love the build quality. Been doing laps at Ruapuna, and this radiator holds temps like a champ. A must-have if you're running more boost!

Sam H.
Christchurch, CAN
★★★★★

Read More
Read Less

Nam tempus turpis at metus scelerisque placerat nulla deumantos solicitud felis. Pellentesque diam dolor, elementum etos lobortis des mollis ut risus. Sedcus faucibus an sullamcorper mattis drostique des commodo pharetras loremos.

Returns Policy

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi ut blandit risus. Donec mollis nec tellus et rutrum. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Ut consequat quam a purus faucibus scelerisque. Mauris ac dui ante. Pellentesque congue porttitor tempus. Donec sodales dapibus urna sed dictum. Duis congue posuere libero, a aliquam est porta quis.

Donec ullamcorper magna enim, vitae fermentum turpis elementum quis. Interdum et malesuada fames ac ante ipsum primis in faucibus.

Curabitur vel sem mi. Proin in lobortis ipsum. Aliquam rutrum tempor ex ac rutrum. Maecenas nunc nulla, placerat at eleifend in, viverra etos sem. Nam sagittis lacus metus, dignissim blandit magna euismod eget. Suspendisse a nisl lacus. Phasellus eget augue tincidunt, sollicitudin lectus sed, convallis desto. Pellentesque vitae dui lacinia, venenatis erat sit amet, fringilla felis. Nullam maximus nisi nec mi facilisis.

Shipping

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi ut blandit risus. Donec mollis nec tellus et rutrum. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Ut consequat quam a purus faucibus scelerisque. Mauris ac dui ante. Pellentesque congue porttitor tempus. Donec sodales dapibus urna sed dictum. Duis congue posuere libero, a aliquam est porta quis.

Donec ullamcorper magna enim, vitae fermentum turpis elementum quis. Interdum et malesuada fames ac ante ipsum primis in faucibus.

Curabitur vel sem mi. Proin in lobortis ipsum. Aliquam rutrum tempor ex ac rutrum. Maecenas nunc nulla, placerat at eleifend in, viverra etos sem. Nam sagittis lacus metus, dignissim blandit magna euismod eget. Suspendisse a nisl lacus. Phasellus eget augue tincidunt, sollicitudin lectus sed, convallis desto. Pellentesque vitae dui lacinia, venenatis erat sit amet, fringilla felis. Nullam maximus nisi nec mi facilisis.

×

Someone recently bought a

Your cart

×