Denso 221-9549 Radiator

Radiator Overview

Denso radiator part number 221-9549 is an OE-style cooling replacement built to match factory radiator specifications. It is engineered for direct fitment and dependable engine temperature control in heavy-duty truck applications.

• OE supplier pedigree from Denso for consistent fit and function.
• Built to OE standards for tanks, fin pitch, core dimensions, and materials.
• Transmission oil cooler included for integrated cooling system service.
• Core dimensions: 26.69 in. height, 21.57 in. width, and 1.57 in. thickness.
• 1.81 in. inlet and outlet diameters for proper hose connection sizing.

Fitment Details

Fits 2013-2018 Ram 2500, OE radiator application. Fits 2013-2018 Ram 3500, OE radiator application. This part cross-references Spectra Premium (e.g., CU13490) and TYC (e.g., 13491) for the same application.

What It Helps Address

• Overheating caused by a worn or inefficient radiator.
• Coolant temperature instability under load or towing.
• Leaks or damage in the radiator core or tanks.
• Reduced cooling performance from aging internal passages.

Installation Notes

Verify core dimensions, inlet and outlet sizes, and transmission cooler connections before installation. Confirm the vehicle uses the OE radiator configuration listed for the application. Match all hose and cooler line connections to the existing system layout.

Quality Assurance

Denso applies OE engineering experience and durability testing to each radiator. The brand states that its radiators are built to meet strict manufacturer standards for performance, reliability, and fitment.