AE86 Koyo HH Series 4AGE Aluminum Performance Radiator (1983-87 Corolla)

Koyorad HH Series 48mm Aluminum Performance Radiator

For 1983–1987 Toyota Corolla Levin / Sprinter Trueno AE86 with 4A-GE and Manual Transmission

Overview

The Koyorad HH Series 48mm Aluminum Performance Radiator is a high-capacity direct-fit cooling upgrade for 1983–1987 Toyota Corolla Levin and Sprinter Trueno AE86 models equipped with the 1.6L 4A-GE engine and manual transmission.

Built around Koyorad's 48mm HH Series Hyper Core, this all-aluminum radiator uses an ultra-high-density tube and fin design to increase coolant capacity and heat-transfer capability compared with a conventional factory-style radiator. The increased thermal capacity is well suited to spirited street driving, drifting, track use, modified engines, and hot-climate operation.

Vehicle-specific mounting points allow the radiator to install in the factory location while retaining the original radiator hoses and OEM fan-shroud mounting provisions.

Key Features

• 48mm HH Series Hyper Core

• All-aluminum performance radiator construction

• Ultra-high-density tube and fin design

• Designed for RWD AE86 models with the 4A-GE engine

• Manual-transmission application

• Vehicle-specific direct-fit mounting

• Nocolok-R brazed radiator core

• Hand-welded aluminum construction

• Billet aluminum filler neck

• Integrated 1/8-inch NPT female accessory port

• Retains OEM fan-shroud mounting points

• Compatible with factory radiator hose connections

48mm HH Series Hyper Core

The 48mm Hyper Core provides substantially greater core thickness and coolant capacity than the factory-style radiator while maintaining application-specific fitment.

Its high-density tube and fin arrangement increases the available heat-transfer surface area, helping the cooling system manage sustained engine loads and repeated high-RPM operation more effectively.

This additional cooling capacity makes the HH Series particularly well suited to street-driven AE86s, drift cars, track builds, canyon cars, and modified 4A-GE engines where the cooling system is subjected to greater thermal demand.

All-Aluminum Construction

The radiator uses an all-aluminum core and tanks for efficient heat transfer and increased durability.

Construction features include:

• Hand-assembled aluminum radiator core

• Nocolok-R brazing process

• Hand-welded aluminum tanks

• Precision tube and fin alignment

• Billet aluminum filler neck

• Vehicle-specific mounting points

The direct-fit design retains the original radiator mounting provisions, fan-shroud mounts, and coolant-hose connections without requiring a universal mounting system or vehicle modification.

Vehicle Fitment

Toyota Corolla Levin / Sprinter Trueno

• 1983–1987 Toyota Corolla Levin / Sprinter Trueno – 5th Gen / AE86 – RWD – 1.6L 4A-GE – Manual Transmission

Fitment Notes

• RWD AE86 chassis only

• 1.6L 4A-GE engine only

• Manual transmission only

• Fits Corolla Levin and Sprinter Trueno AE86 applications

• Does not fit 4A-C-equipped models

• Does not fit automatic-transmission applications

• Uses factory radiator mounting locations

• OEM fan-shroud mounting points are retained

• Factory radiator hose connections are retained

• No cutting or vehicle modification required for the listed application

• Integrated 1/8-inch NPT accessory port can be used for an aftermarket coolant-temperature sensor

• Radiator cap is not included

Product Specifications

Brand: Koyorad
Series: HH Series
Product Type: Performance Radiator
Core Type: Hyper Core
Core Thickness: 48 mm
Construction: All Aluminum
Engine: 1.6L 4A-GE
Transmission: Manual
Drivetrain: RWD
Chassis: AE86
Core Construction: Nocolok-R Brazed
Tanks: Hand-Welded Aluminum
Filler Neck: Billet Aluminum
Accessory Port: 1/8-Inch NPT Female
Installation: Vehicle-Specific / Direct Fit
Primary Use: Street, Drift, Track & Performance Driving

What's Included

• (1) Koyorad HH Series 48mm all-aluminum performance radiator

• (1) Pre-installed threaded accessory-port plug

Radiator cap is not included.