Denso 221-3112 Radiator

Denso Radiator for Toyota Yaris and Scion xD

The Denso 221-3112 radiator is built for direct-fit cooling system service on select Toyota Yaris and Scion xD applications. It uses OE-style dimensions and materials to support consistent engine temperature control, transmission cooling, and dependable fitment.

• OE-focused radiator construction from Denso
• Core height: 13.7500 in.
• Core width: 19.1870 in.
• Core thickness: 0.6250 in.
• Inlet diameter: 1.2500 in.
• Outlet diameter: 1.2500 in.
• Transmission oil cooler included
• Part number: 221-3112

OE-Style Cooling Performance

Denso supplies radiators to original equipment vehicle manufacturers worldwide, and this radiator reflects that OE engineering approach. The core dimensions, tank design, fin pitch, and material selection are built to match manufacturer standards for cooling efficiency, fitment, and durability. For drivers replacing a worn radiator on a Toyota Yaris or Scion xD, Denso 221-3112 provides a direct replacement path with the cooling capacity needed for everyday driving.

This part cross-references Toyota 16400-21300 for the same application.

What This Radiator Helps Address

• Engine overheating caused by a leaking or restricted radiator
• Loss of coolant from cracked tanks or damaged core passages
• Poor heat rejection during stop-and-go driving
• Transmission fluid temperature control when the cooler circuit is used
• Fitment issues from non-OE replacement radiators

Fitment Details

• Fits 2018 Toyota Yaris, Japan Built Part
• Fits 2007-2017 Toyota Yaris
• Fits 2008-2014 Scion xD

Installation Notes and Quality

Verify inlet and outlet sizing, core dimensions, and transmission cooler connections before installation. Flush the cooling system, inspect hoses and clamps, and confirm proper coolant fill and bleed procedures after replacement. Denso radiators are manufactured to OE standards and undergo durability and function testing to support reliable service under demanding operating conditions.