Denso 221-3137 Radiator

Denso 221-3137 Radiator for Tacoma

Denso 221-3137 is a radiator built for 1995-2004 Toyota Tacoma applications. It uses OE-style dimensions and materials to support proper engine cooling, with an integrated transmission oil cooler and inlet/outlet sizes that match the listed application.

Key Features

• Core height: 18.7500 in.
• Core width: 24.6250 in.
• Core thickness: 1.0000 in.
• Transmission oil cooler included: yes
• Inlet diameter: 0.9370 in.
• Outlet diameter: 0.9370 in.
• OE-focused radiator configuration for Toyota Tacoma cooling system service

Detailed Description

This Denso radiator is engineered around OE specifications for fitment, tank design, fin pitch, core dimensions, and material selection. For Toyota Tacoma owners replacing a leaking, clogged, or damaged radiator, part number 221-3137 provides a direct replacement solution that supports stable coolant flow and heat transfer under daily driving and demanding conditions. This part cross-references Toyota 16410-0C022 and 16410-0C023 for the same application.

Compatible With 1995-2004 Toyota Tacoma, N/A. The listed dimensions and transmission cooler provision make this radiator a practical match for Tacoma cooling system repair where factory-style fitment matters. Denso 221-3137 is also a strong reference point when comparing aftermarket radiator options for the Toyota Tacoma platform.

Common Problems This Part Can Address

• Coolant leaks from a cracked or corroded radiator
• Overheating caused by restricted coolant flow
• Transmission fluid temperature concerns when the cooler circuit is part of the radiator
• Reduced cooling efficiency from damaged fins or internal blockage
• Fitment issues after replacing a worn factory radiator

Installation Notes and Tips

Verify core dimensions, inlet and outlet diameter, and transmission cooler routing before installation. Flush the cooling system, inspect hoses and clamps, and confirm the radiator mounts and fan shroud alignment on the Tacoma before final assembly. Recheck coolant level and transmission fluid level after the engine reaches operating temperature.

Quality Assurance

Denso supplies radiators to OE vehicle manufacturers worldwide, and this radiator is built to meet rigid OE standards for performance, reliability, and fitment. Each unit is tested for durability and function to help ensure dependable cooling performance in Toyota Tacoma service.