• Koyo Hyper V-Core Radiator w/ Filler Neck | 03-07 Subaru WRX/STi (VH091672)
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Koyo Hyper V-Core Radiator w/ Filler Neck | 03-07 Subaru WRX/STi (VH091672)

Koyo Hyper V-Core Radiator w/ Filler Neck | 03-07 Subaru WRX/STi (VH091672)

VH091672

In stock

$538.20 USD
$538.20 USD $538.20 USD
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The Koyo Hyper V-Core Radiator with Filler Neck is a high-performance, all-aluminum racing radiator designed specifically for 2003-2007 Subaru WRX and STI models equipped with manual transmissions. This radiator features the innovative Hyper V-Core technology, which enhances cooling efficiency by optimizing airflow and heat dissipation in tight engine bays where space is limited. Its ultra-efficient core is engineered to handle extreme heat conditions, making it ideal for high-performance applications, track days, or demanding street use. The radiator’s construction ensures durability and corrosion resistance, providing a reliable upgrade over stock units. The inclusion of a filler neck simplifies maintenance and coolant filling procedures, contributing to overall cooling system reliability.

This radiator is a direct-fit replacement for the OEM unit on 2003-2007 Subaru WRX and STI models, with specific inlet and outlet locations designed to match factory configurations. It is suitable for vehicles subjected to high thermal loads, such as those used in racing or spirited driving, where enhanced cooling capacity is critical. Installation involves replacing the stock radiator with this unit, offering a straightforward bolt-on upgrade. The kit includes the radiator and filler neck, with no additional modifications required. Compatible with stock or upgraded cooling systems, this radiator provides improved thermal management for demanding driving conditions, ensuring optimal engine performance and longevity.

Overview

Koyo Hyper V-Core Radiator w/ Filler Neck

Part #: VH091672

Overview

The Koyo Hyper V-Core Series Radiator with Filler Neck is a high-performance cooling solution designed specifically for Subaru WRX and STI models from 2003 to 2007. Crafted from all-aluminum construction, this radiator offers superior heat dissipation and durability, making it an ideal upgrade for enthusiasts seeking enhanced cooling efficiency under extreme driving conditions. Its compact design is tailored to fit vehicles with limited space and crowded engine bays, ensuring optimal airflow and cooling performance. Whether you're pushing your car on the track or tackling demanding daily drives, this radiator helps maintain consistent engine temperatures, supporting reliability and performance. Designed for drivers who demand the best in cooling technology, the Hyper V-Core radiator improves heat transfer and reduces the risk of overheating during high-stress situations. Its robust construction and precision engineering ensure long-lasting performance, making it a reliable choice for both street and racing applications. The included filler neck simplifies installation and ensures a secure, leak-free connection, helping you achieve a professional-grade upgrade with confidence.

Key Features

The Koyo Hyper V-Core Radiator is engineered to deliver maximum cooling efficiency and durability. Key features include:
  • All-aluminum construction for lightweight strength and excellent heat dissipation
  • Hyper V-Core design optimized for extreme heat environments and limited space applications
  • Precision-machined filler neck for easy installation and secure sealing
  • Enhanced inlet and outlet locations to improve airflow and cooling performance
  • Corrosion-resistant finish for long-term durability
  • Designed specifically for 2003-2007 Subaru WRX/STi models with manual transmissions

Construction & Design

This radiator features a high-efficiency Hyper V-Core core, which maximizes surface area for superior heat transfer. The all-aluminum construction ensures lightweight durability and excellent thermal conductivity, while the precision-machined filler neck provides a seamless fit and reliable sealing. Its compact, race-inspired design is tailored to fit tightly within the engine bay, addressing space constraints without sacrificing cooling performance.

Driving Feel & Feedback

Upgrading to the Koyo Hyper V-Core radiator helps maintain consistent engine temperatures during demanding driving conditions, reducing heat-related performance drops. This results in a more responsive engine feel and improved reliability, especially during extended or high-performance use.

Installation & Fitment

Installation involves replacing the factory radiator with this direct-fit upgrade. The included filler neck simplifies the process, and compatibility with Subaru WRX/STi models from 2003 to 2007 ensures a straightforward upgrade for owners of these vehicles. Proper fitment should be verified against the vehicle’s specifications and the part number.

What’s Included

The package includes the Hyper V-Core radiator with integrated filler neck, mounting hardware, and installation instructions, providing everything needed for a professional-quality upgrade.
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