Radiator KAX 2173 Aluminum Core Radiator Compatible with Ranger

In this review the Radiator KAX 2173 is assessed as a direct replacement radiator for a range of late 1990s and 2000s Ford trucks and SUVs. It is aimed at DIY mechanics and repair shops that need a straightforward, dependable way to restore cooling system performance. The single biggest reason to buy is fitment confidence: the radiator is built to match OE form and function so it drops in without extensive modification, restoring cooling capacity and fit for vehicles like Ranger, Explorer, Sport Trac, Mountaineer and B3000/B4000 models.

Key Features

• Aluminum core construction: Provides improved heat transfer and corrosion resistance compared with older cores, helping the engine run cooler under load.
• Exact OE design: Precision design ensures the radiator matches original mounting points and hose locations for a simpler, faster installation.
• Comprehensive fitment coverage: Compatible with numerous Ranger, Explorer, Sport Trac, Mountaineer, B3000 and B4000 years so it suits common fleet and consumer replacements.
• Thermally shocked gaskets and rings: Seals are pre-tested for durability in extreme cold and reduce the chance of early leaks after installation.
• Standard inlet and outlet sizes: 1-1/2 in inlet and outlet diameters keep plumbing straightforward and avoid the need for adapters on compatible models.
• Measured core dimensions: A 20-3/4 in by 23-3/4 in by 1 in core size provides a clear match to the factory cooling surface area for these vehicles.

Who It's For

This radiator is best for owners of Ford Ranger (1998-2011), Explorer (1998-2001), Explorer Sport Trac (2001-2005), Mountaineer (2001), B3000 (1998-2007) and B4000 (1998-2009) who need a reliable replacement that follows original equipment design. Professional repair shops replacing cores on common model years will appreciate the drop-in fit and tested seals.

Those who should look elsewhere include owners of vehicles outside the listed years or models and anyone needing an upgraded high-capacity racing radiator; this unit is designed to restore factory performance rather than provide custom high-flow modifications.

Pros & Cons

Pros

• Direct-fit OE design minimizes installation time and fitment issues.
• Aluminum core gives good heat transfer and long-term resistance to corrosion.
• Seals and gaskets are thermally shocked for durability in cold climates.
• Clear compatibility across many Ford truck and SUV model years reduces ordering errors.

Cons

• Not marketed as a high-performance racing radiator, so users seeking extreme cooling upgrades should consider aftermarket custom units.
• Limited to the listed models and years; verify reference numbers before purchase to avoid mismatch.

Specifications

Core Width	20-3/4 in
Core Height	23-3/4 in
Core Thickness	1 in
Inlet Diameter	1-1/2 in
Outlet Diameter	1-1/2 in
Reference Number	2173 and multiple OE cross references

Our Verdict

The KAX 2173 Aluminum Core Radiator is a practical, value-focused replacement for the listed Ranger, Explorer, Sport Trac, Mountaineer and B-series trucks; it restores factory cooling performance with an OE-style fit and durable seals. For routine repairs and fleet maintenance this radiator offers dependable fitment and good thermal performance without unnecessary complexity, making it a sensible buy for most owners needing a direct replacement.

Frequently Asked Questions

Will this radiator fit my 2003 Explorer Sport?
It covers Explorer Sport 2002-2003 in the listed fitment, but always confirm by checking the vehicle year and reference numbers before ordering.

Are the inlet and outlet hose sizes standard?
Yes, both inlet and outlet diameters are 1-1/2 in, matching the factory plumbing for compatible models.

Is this radiator an upgrade for high-performance use?
No, it is designed to restore OE cooling performance rather than provide a high-capacity racing upgrade.