CSF 5th Gen Toyota 4Runner High-Performance All-Aluminum Radiator

With over five decades of specialized experience in radiator manufacturing, CSF stands as a leader in delivering cooling solutions that meet the highest standards of quality and performance. The CSF 5th Gen Toyota 4Runner High-Performance All-Aluminum Radiator is engineered to ensure optimal engine cooling, enhancing the reliability and longevity of your vehicle under a variety of demanding conditions.

This radiator is meticulously designed for both on-road and off-road applications, making it an essential upgrade for off-road enthusiasts, overlanders, and adventurers who require dependable cooling performance in challenging environments. The core of this radiator features a 2-Row design utilizing CSF's exclusive B-Tube Technology. Unlike conventional oval "O" type tubes, CSF employs a uniquely engineered "B"-shaped tube that is seam brazed for superior strength and durability.

The innovative "B-Tube" design allows the use of thinner and lighter aluminum material without compromising structural integrity, resulting in enhanced cooling efficiency. This design increases the heat transfer surface area by approximately 15% compared to standard tubes, effectively doubling the cooling capacity within the same spatial constraints. Additionally, the "B-Tube" facilitates dual liquid laminar flow, further optimizing heat dissipation.

Complementing the advanced tubing is CSF’s ultra-efficient multi-louvered fin design. These fins, precisely aligned and measured for each specific application, maximize airflow through the radiator core. The fin dimensions and configurations have been rigorously tested in CSF’s wind-tunnel laboratory to ensure maximum heat rejection efficiency, contributing to superior engine temperature management.

The CSF radiator is a true “Drop-in fit” replacement, requiring no modifications for installation. All brackets are CNC machined and welded to OE specifications, ensuring exceptional fitment and long-term durability. The inlet and outlet connections are designed to match the original equipment manufacturer (OEM) standards, allowing seamless integration with existing OEM or aftermarket hoses.

Whether your driving involves rigorous off-roading, heavy towing, or everyday commuting, the CSF 5th Gen Toyota 4Runner radiator delivers dependable cooling performance that meets professional standards. Trust in CSF’s commitment to quality and innovation to maintain your vehicle’s engine temperature within optimal ranges, thereby protecting critical components and enhancing overall vehicle performance.

Features

• 2 Row, 42mm Ultra High-Performance Core Featuring CSF's Exclusive B-Tube Technology
• Core Features Ultra-Efficient, 6.5mm Tall Fins with a Multi-Louvered Design for Maximum Surface Area Contact
• Upgraded 4-Plate Automatic Transmission Cooler Built Into Bottom End Tank
• Individually Leak and Pressure Tested to Ensure Reliability
• CNC Machined Mounting Brackets for Superb Fit and Durability
• 100% All Aluminum TIG-Welded Construction for Strength and Longevity
• True "Drop-In-Fit" Design Requires No Modifications to Install
• 1 Hour "Mirror Finish" Hand Polish for Corrosion Resistance and Aesthetic Quality
• 2 Year Limited Warranty for Peace of Mind

Applications

OEM Part Numbers

• Toyota: 16400 31B70
• Toyota: 16400-31B70
• Toyota: 1640031B70
• Toyota: 16410 AZ030
• Toyota: 16410-AZ030
• Toyota: 16410AZ030
• Toyota: 16400 31710
• Toyota: 16400-31710
• Toyota: 1640031710
• Toyota: 16400 31711
• Toyota: 16400-31711
• Toyota: 1640031711
• Toyota: 16400 31712
• Toyota: 16400-31712
• Toyota: 1640031712
• Toyota: 16400 31713
• Toyota: 16400-31713
• Toyota: 1640031713

Warranty

Cooling Systems and Flexibles, Inc. (CSF) guarantees the performance and durability of its High-Performance Cooling Systems under normal use and service conditions to the original purchaser of the vehicle in which the product was installed. This warranty reflects CSF’s commitment to quality and customer satisfaction. For comprehensive warranty information, please visit our Warranty Page.

SKU# 7085 Warranty Term: 2 years

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.