Denso 221-3221 Radiator

Denso Radiator for Honda Civic and CRX

The Denso 221-3221 radiator is built for 1988-1991 Honda Civic and 1988-1991 Honda CRX applications with DENSO radiator fitment. It is engineered to match OE-style dimensions and cooling requirements for dependable engine temperature control in daily driving and demanding conditions.

Key Features

• Core height: 12.8750 in.
• Core width: 25.9370 in.
• Core thickness: 0.6250 in.
• Inlet diameter: 1.1250 in.
• Outlet diameter: 1.1250 in.
• Transmission oil cooler included
• OE-focused radiator construction for fitment and cooling performance

Detailed Description

Denso part number 221-3221 is a radiator designed around OE specifications for the Honda Civic and Honda CRX. Denso supplies radiators to vehicle manufacturers worldwide, and this unit reflects that OE engineering approach with controlled core dimensions, tank design, fin pitch, and materials selected to meet strict durability and function standards. The result is a radiator built to support stable coolant flow and consistent heat rejection.

This radiator cross-references Honda 19010-PM3-901 for the same application.

What This Radiator Helps Address

• Engine overheating caused by reduced cooling efficiency
• Coolant temperature instability during stop-and-go driving
• Leaking or aging radiator cores and tanks
• Poor fitment from non-OE-style replacement parts
• Transmission cooling concerns on vehicles using an integrated cooler

Installation Notes and Tips

Fits 1988-1991 Honda Civic, N/A. Fits 1988-1991 Honda CRX, N/A. Confirm inlet and outlet hose sizes, mounting points, and transmission cooler line routing before installation. Flush the cooling system, inspect hoses and clamps, and refill with the correct coolant mixture after replacement.

Quality Assurance

Denso radiators are tested for durability and function before release. This OE-oriented manufacturing process helps ensure consistent fitment, cooling performance, and reliability for Honda Civic and Honda CRX applications.