Spectra 2001-1739P Radiator

Spectra 2001-1739P Heavy Duty Radiator

The Spectra 2001-1739P radiator is a heavy duty replacement built for cooling-system service where OE-level fit and thermal performance matter. It uses an aluminum core with plastic tanks and includes an integrated transmission oil cooler for applications that route automatic transmission fluid through the radiator.

Key Features

• Aluminum core with plastic tank construction
• Downflow radiator design
• 2-row core for efficient heat transfer
• Integrated plated transmission oil cooler on the engine side
• Upper right inlet and lower left outlet layout
• 2.5 in. inlet and outlet diameters
• Mounting hardware included
• Pin attachment method

Detailed Description

Spectra Premium engineers this radiator to meet or exceed the performance of the original equipment unit it replaces, with attention to the core, tanks, and transmission cooler assembly. The core measures 45.625 in. high, 41.25 in. wide, and 2.1875 in. thick, giving it the size and surface area needed for dependable heat rejection in heavy duty cooling systems. The plated transmission cooler is built into the radiator for vehicles that use radiator-based transmission fluid cooling. This part cross-references Perfection 800106 for the same application. Compatible with select Freightliner and related heavy duty applications, the Spectra 2001-1739P is a direct-fit radiator replacement for service work where OE-style dimensions and hose locations are important.

What It Helps Address

• Engine overheating caused by a worn or leaking radiator
• Transmission fluid temperature issues tied to a failing cooler circuit
• Coolant loss from cracked tanks or aged core seams
• Poor heat dissipation from restricted or damaged radiator passages
• Fitment problems when replacing an OE-style downflow radiator

Installation Notes and Tips

Verify inlet and outlet placement before installation: upper right inlet, lower left outlet. Confirm the 2.5 in. hose connections, downflow orientation, and transmission cooler line spacing match the original unit. The radiator uses a pin attachment method and includes mounting hardware for installation. Inspect hoses, clamps, and transmission cooler lines before reassembly to reduce the chance of repeat leaks.

Quality Assurance

Spectra Premium uses manufacturing controls and engineering standards aimed at matching or exceeding OE performance for heavy duty cooling components. The radiator is built with an aluminum core, plastic tanks, and an integrated transmission oil cooler to support consistent cooling performance in service applications. Part number 2001-1739P is the reference to confirm the correct replacement before ordering.