CSF 3-Row All-Metal Radiator | 4WD (1990-95 4Runner)

CSF Heavy-Duty 3-Row All-Metal Radiator

For 1990–1995 2nd Gen Toyota 4Runner 4WD

Overview

The CSF Heavy-Duty 3-Row All-Metal Radiator is an upgraded cooling solution for 1990–1995 2nd Gen Toyota 4Runner 4WD models equipped with the 2.4L 22RE or 3.0L 3VZ-E V6 engine.

Both engine-specific configurations use a three-row copper core with brass tanks, providing durable all-metal construction and additional cooling capacity compared with the common factory-style 2-row radiator. The three-row design—often referred to as a 3-core radiator—is well suited to daily driving, hot climates, towing, off-road use, larger tires, added vehicle weight, and older Toyota trucks that can benefit from additional cooling reserve.

This is a heavy-duty 3-row upgrade rather than an exact stock-replacement radiator. Preserve Rad recommends upgrading to a quality 3-row radiator when replacing the cooling system on classic Toyota 4Runners and Pickups whenever the correct application is available. Because the larger-core upgrade does not duplicate every original radiator and fan-shroud configuration exactly, minor installation modifications may be required.

Key Features

• Heavy-duty 3-row / 3-core radiator design

• Upgrade over common factory-style 2-row radiators

• Durable copper core with brass tanks

• Fully all-metal construction

• Separate 22RE and 3VZ-E V6 configurations

• Downflow radiator design

• Integrated transmission cooler

• Reinforced inlet and outlet connections

• Increased cooling reserve for demanding operating conditions

• Serviceable copper/brass construction that can often be repaired or recored

Heavy-Duty 3-Row Upgrade

Many Toyota Pickups and 4Runners from this era used thinner 2-row radiator configurations from the factory. A properly functioning 2-row radiator can adequately cool a stock vehicle under normal conditions, but moving to a heavy-duty 3-row radiator provides additional heat-exchange surface and greater cooling reserve.

The additional capacity is particularly useful for:

• Hot-weather driving

• Slow-speed off-road use

• Towing or hauling

• Larger tires

• Steel bumpers, winches, armor, or added vehicle weight

• Extended idling

• Engine modifications

• Increased engine and drivetrain load

For owners already replacing an aging, leaking, clogged, or damaged radiator, Preserve Rad recommends stepping up to the heavy-duty 3-row configuration rather than installing another basic 2-row replacement when the correct application is available.

This upgrade is worthwhile even for many otherwise stock Toyota Pickups and 4Runners. The goal is to improve cooling capacity while the radiator is already being replaced rather than simply duplicating the minimum original cooling configuration.

Original radiator dimensions and fan-shroud arrangements can vary between trucks. These CSF radiators should therefore be considered heavy-duty cooling upgrades rather than exact reproductions of every factory radiator assembly.

Material & Construction

Both configurations use traditional copper-and-brass construction with a three-row copper core and brass tanks.

Copper/brass construction is particularly attractive for long-term ownership of a classic Toyota because a properly equipped radiator shop can often solder, repair, or recore the radiator rather than requiring replacement of the complete assembly after minor damage.

The 22RE and 3VZ-E configurations use different core dimensions to suit their respective cooling-system layouts. An integrated transmission cooler is included for applications utilizing radiator-based transmission cooling.

Vehicle Fitment

Toyota 4Runner

• 1990–1995 Toyota 4Runner – 2nd Gen – 4WD – 2.4L 22RE

• 1990–1995 Toyota 4Runner – 2nd Gen – 4WD – 3.0L 3VZ-E V6

Fitment Notes

• 4WD models only

• Select the configuration matching your engine

• 2.4L configuration is for the 22RE

• 3.0L configuration is for the 3VZ-E V6

• This is a heavy-duty 3-row upgrade and not an exact stock-replacement radiator

• The larger-core configuration can affect factory fan-shroud and surrounding-component clearance

• Fan-shroud trimming, mounting-hole adjustment, different hardware, or other minor modifications may be required

• The 22RE configuration may require fan-shroud modification or an alternate shroud arrangement

• Previous radiator replacements, fan-shroud changes, body condition, or other modifications can affect final fitment

• Inspect existing cooling-system components and clearances before installation

• Radiator cap is not included

• Uses a compatible mini-style 13 psi radiator cap

Product Specifications

Brand: CSF
Product Type: Heavy-Duty Engine Radiator
Construction: All-Metal
Core Material: Copper
Tank Material: Brass
Core Design: 3-Row
Radiator Design: Downflow
Inlet Diameter: 1 3/8 in. – Right
Outlet Diameter: 1 3/8 in. – Left
Transmission Cooler: Integrated
Drivetrain: 4WD
Fit: Vehicle-Specific Heavy-Duty Upgrade
Installation: Minor fan-shroud, mounting, or clearance modification may be required

Available Configurations

1990–1995 | 2.4L 22RE

• Heavy-duty 3-row copper/brass radiator

• Core height: 15 3/4 in.

• Core width: 20 13/16 in.

• Core thickness: 1 11/16 in.

• Integrated transmission cooler: 14 3/4 in.

• Fan-shroud modification or adjustment may be required

1990–1995 | 3.0L 3VZ-E V6

• Heavy-duty 3-row copper/brass radiator

• Core height: 18 11/16 in.

• Core width: 20 11/16 in.

• Core thickness: 1 11/16 in.

• Integrated transmission cooler: 14 3/4 in.