One Stop Solutions 13251 Radiator

Radiator for Toyota 4Runner

Replace a worn cooling system component with this OSC Premium New Automotive Radiator for the Toyota 4Runner. Part number 13251 is built to OES form and function with a downflow design, plastic tanks, a PA core, and a plated transmission oil cooler for direct-fit service on 2010-2024 Toyota 4Runner applications.

Key Features

• Fits 2010-2024 Toyota 4Runner, N/A
• Downflow radiator design with 1-row core construction
• PA core material with plastic tanks for OE-style packaging
• Transmission oil cooler included with plated cooler type
• Cap included
• Core dimensions: 22 5/8 in. height, 25 13/16 in. width, 1 in. thickness
• Inlet and outlet diameters: 1 3/8 in.
• Engine oil cooler not included
• OSC part number 13251

Detailed Description

OSC designs this radiator to match original equipment form and function for the Toyota 4Runner. The radiator uses premium-grade aluminum construction with cadmium-plated tubes inside and out to help resist premature failure, while the die-cut gasket helps support a leak-resistant seal. Each unit is individually pressure tested, and the cooling package is engineered for multi-fit applications without changing the intended look or fit. Part number 13251 also includes the transmission oil cooler where originally equipped and follows OE-style cooler design requirements.

This part cross-references APDI 8013251 and Spectra Premium CU13251 for the same application.

Common Problems This Radiator Helps Address

• Overheating caused by a leaking or restricted radiator
• Transmission fluid temperature issues related to a failing cooler circuit
• Coolant loss from cracked tanks or worn seals
• Reduced cooling performance from aged core fins and tubes
• Fitment problems when replacing an original Toyota 4Runner radiator

Installation Notes and Tips

Verify inlet and outlet hose sizes, cooler line routing, and overall core dimensions before installation. Transfer any required fittings or related components from the original setup only when needed for your specific vehicle configuration. For 2010-2024 Toyota 4Runner service, confirm that the radiator matches the factory cooling layout before final assembly.

Quality Assurance

OSC tests complete radiators up to three times during production: cooler circuits are checked before installation into the tank, the core is tested before assembly, and the finished unit is tested again. The design also incorporates engineering updates aimed at improving durability and cooling performance in higher-mileage vehicles.