One Stop Solutions 2603 Radiator

Radiator for Lincoln Aviator Cooling Service

Restore cooling performance with this OSC Premium New Automotive Radiator, part number 2603. It is built for 2003-2005 Lincoln Aviator applications and follows OES form and function for a direct replacement in the engine cooling system.

Designed around a crossflow layout with a 21 3/4 in. core height, 23 9/16 in. core width, and 1 in. core thickness, this radiator uses a PA core and plastic tanks. The inlet and outlet diameters are both 1 1/2 in., and no engine oil cooler, transmission oil cooler, or cap is included.

Key Features

• Fits 2003-2005 Lincoln Aviator, N/A
• OSC part number 2603 for direct identification
• Crossflow radiator design with single-row core construction
• PA core material with plastic tanks
• Cadmium-plated tubes inside and out to help resist premature failure
• Die-cut gasket design for leak resistance
• Individually pressure tested during production
• Engineered for multi-fit applications without changing the original look or fit

Detailed Description

This OSC radiator is built as an OE-style replacement for the Lincoln Aviator cooling system, with factory-oriented dimensions and mounting layout. The design emphasizes consistent coolant flow, durable core construction, and a clean drop-in fit for 2003-2005 Lincoln Aviator service work. Part number 2603 is also referenced in the aftermarket under APDI 8012603, Spectra Premium CU2603, Anchor 8324, and cross-reference 5C5Z8005AA / FO3010246.

OSC uses premium-grade aluminum components in its radiator construction process and applies engineering updates to address common failure points in higher-mileage vehicles. That includes added fin density, thicker core construction, and improved cooling capacity where needed to manage heat more effectively.

Common Problems This Radiator Can Address

• Coolant leaks from a damaged or aging radiator tank or core
• Overheating caused by restricted heat transfer
• Cracked or weakened radiator components from long-term heat cycling
• Reduced cooling efficiency in a high-mileage Lincoln Aviator
• Fitment issues from a replacement radiator that does not match OE dimensions

Installation Notes and Tips

Verify inlet and outlet sizes, core dimensions, and crossflow layout before installation. Transfer any vehicle-specific connections or fittings as required by the application, and inspect hoses, clamps, and surrounding cooling components while the system is open. After installation, refill and bleed the cooling system according to factory service procedures and check for leaks under operating temperature.

Quality Assurance

Each radiator is pressure tested during production, including testing of the cooler circuits before assembly and again after final assembly. OSC also builds in design updates aimed at improving durability and service life in demanding driving conditions.