DENSO 221-3137 Engine Coolant Radiator Aluminum Core with Transmission Cooler

The DENSO 221-3137 Engine Coolant Radiator delivers OE-quality performance and precision fitment for reliable engine cooling. As a leading supplier to automotive manufacturers worldwide, DENSO brings decades of engineering expertise to every radiator they produce.

Key Features:

• Aluminum core with plastic tanks for lightweight durability and efficient heat dissipation
• Integrated transmission oil cooler for automatic transmission applications
• Downflow radiator style with inlet on upper passenger side and outlet on lower driver side
• Core dimensions: 18.75" height x 24.625" width x 1.0" thickness for optimal cooling capacity
• 0.937" inlet and outlet diameter for proper coolant flow
• First Time Fit design ensures precision fitment without modifications, brackets, or adjustments
• Superior fin wave technology provides maximum heat transfer efficiency
• Thin-tube construction maximizes cooling performance

This radiator meets or exceeds OE manufacturer standards for configurations, materials, fin pitch, and core dimensions. DENSO manufactures OEM radiators for Toyota, making this an ideal direct replacement that maintains factory cooling performance. All DENSO radiators pass strict durability and function tests to ensure reliable operation even under demanding conditions.

Cross-Reference Part Numbers: Replaces Toyota 16410-0C022, 16410-0C023, 16410-0C024, Spectra Premium CU1778, TYC 1778, APDI 8011778, CSF 3154, and Vista Pro 431372.