Denso 221-3234 Radiator

Brand Denso 221-3234
Core Height 14.7500
Core Thickness 1.0000
Core Width 26.6250
Inlet Diameter 1.2500
Outlet Diameter 1.2500
Transmission Oil Cooler Included NO
Fits Honda · 6 vehicles

OE experience. Built to OE standards for reliable performance and fit.

Radiator performance. Essential for proper engine cooling and function.

Durability tested. Passes strict function and durability checks.

Cross-references APDI 8012922, CSF 3281 and DPI Performance Racing Products 2922 for the same application. See all 9.

$143.73Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $143.73
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Denso 221-3234 Radiator for Civic Cooling

Denso 221-3234 is a direct-fit radiator for 2006-2011 Honda Civic applications. Built around OE-style dimensions and materials, it supports consistent engine cooling for daily driving and demanding conditions.

Key Features

  • Core dimensions: 14.7500 in. height, 26.6250 in. width, and 1.0000 in. thickness
  • 1.2500 in. inlet and 1.2500 in. outlet for proper coolant flow routing
  • No transmission oil cooler included
  • OE-focused radiator configuration for fitment accuracy
  • Built to Denso’s durability and function testing standards

Detailed Description

Denso 221-3234 radiator is engineered for 2006-2011 Honda Civic cooling system service, with core sizing and connection diameters that match the application requirements. Denso supplies radiators to OE vehicle manufacturers worldwide, and this part reflects that OE experience through controlled tank design, fin pitch, core dimensions, and material selection. If you are replacing a leaking, clogged, or damaged radiator on a Honda Civic, this radiator provides a direct replacement path with the fitment and cooling capacity expected for the vehicle.

This part cross-references Honda 19010-RNB-C51 for the same application.

What It Helps Resolve

  • Engine overheating caused by a restricted or inefficient radiator
  • Coolant loss from cracked tanks or damaged core passages
  • Temperature instability during stop-and-go driving
  • Cooling system performance issues after radiator failure
  • Fitment problems from non-OE-style replacement parts

Installation Notes and Tips

Fits 2006-2011 Honda Civic, N/A. Verify inlet and outlet hose sizes, mounting points, and overall radiator dimensions before installation. Flush the cooling system, inspect hoses and clamps, and refill with the correct coolant mixture after installation. Confirm there is no transmission oil cooler requirement for your specific vehicle setup before ordering.

Quality Assurance

Denso radiators are built using OE supplier know-how and are subjected to durability and function testing before release. That manufacturing approach helps ensure reliable cooling performance and fitment consistency for Honda Civic radiator replacement service.

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionPositionNotes
2011HondaCivicAutomaticN/A—
2010HondaCivicAutomaticN/A—
2009HondaCivicAutomaticN/A—
2008HondaCivicAutomaticN/A—
2007HondaCivicAutomaticN/A—
2006HondaCivicAutomaticN/A—
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
APDI — 8012922CSF — 3281DPI Performance Racing Products — 2922Honda — 19010-RNB-C51OSC — 2922Reach Cooling — 41-2922Spectra Premium — CU2922TYC Cooling - Archived — 2922Vista Pro — 433986