Denso 221-9179 Radiator
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Denso

Denso 221-9179 Radiator

Brand Denso 221-9179
Core Height 26.5748
Core Thickness 1.2598
Core Width 16.4567
Inlet Diameter 1.3780
Outlet Diameter 1.3780
Transmission Oil Cooler Included YES
Fits Pontiac · 2 vehicles

OE experience. Built to meet strict manufacturer standards for fit, performance, and reliability.

Radiator performance. Helps maintain proper engine cooling and function.

Durability tested. Passes rigorous function checks for dependable operation under demanding conditions.

Cross-references ACDelco 21702, ACDelco 21703 and APDI 8012987 for the same application. See all 9.

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Denso 221-9179 Radiator for Pontiac GTO

The Denso 221-9179 radiator is built for direct-fit cooling performance on 2005-2006 Pontiac GTO applications. It combines OE-style dimensions with an integrated transmission oil cooler to support stable engine and transmission temperatures in daily driving and demanding conditions.

Key Features

  • Fits 2005-2006 Pontiac GTO
  • Radiator assembly with transmission oil cooler included
  • Core height: 26.5748 in.
  • Core width: 16.4567 in.
  • Core thickness: 1.2598 in.
  • Inlet diameter: 1.3780 in.
  • Outlet diameter: 1.3780 in.
  • Denso part number 221-9179 for OE-style replacement selection

Detailed Description

Denso 221-9179 is a radiator engineered to match OE manufacturer standards for configuration, fitment, and cooling performance. Denso supplies radiators to vehicle manufacturers worldwide, and this experience is reflected in the radiator’s core dimensions, tank design, fin pitch, and material selection. For Pontiac GTO owners, the result is a radiator built to support consistent heat transfer and dependable operation under normal and severe driving conditions. This part cross-references Spectra Premium CU2987 for the same application.

Common Problems This Radiator Helps Address

  • Engine overheating caused by reduced radiator efficiency
  • Transmission temperature rise when the cooler circuit is compromised
  • Coolant flow restriction from an aging or damaged radiator core
  • Leaks from cracked tanks, seams, or worn radiator components
  • Poor heat rejection during stop-and-go driving or high-load use

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet size, and transmission cooler connections before installation. Flush the cooling system, inspect hoses and clamps, and confirm the cooling fan and thermostat are functioning correctly. Fits 2005-2006 Pontiac GTO, N/A. Fits 2005-2006 Pontiac GTO, N/A.

Quality Assurance

Denso radiators are built to meet OE manufacturer standards and undergo durability and function testing before release. That quality process supports reliable cooling performance and fitment consistency for the Pontiac GTO application.

Related reading

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2006PontiacGTON/A—
2005PontiacGTON/A—
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 21702ACDelco — 21703APDI — 8012987DPI Performance Racing Products — 2987OSC — 2987Pontiac — 92147990Reach Cooling — 41-2987Spectra Premium — CU2987TYC Cooling - Archived — 2987