One Stop Solutions 1826 Radiator

Radiator for 1996-2005 Chevrolet Blazer and More

OSC Premium radiator Part Number 1826 is built for direct replacement service in select Chevrolet, GMC, Oldsmobile, and Isuzu applications. It is engineered for OES form and function, with a crossflow design, plastic tanks, and a premium aluminum core for dependable cooling performance.

Key Features

• Crossflow radiator design with a 26 1/4 in. core height and 15 1/16 in. core width
• 1 in. core thickness and single-row core construction
• Plastic tank construction with premium-grade core materials
• Transmission oil cooler included; engine oil cooler included
• Plated transmission and engine oil cooler design
• Die-cut gasket construction for leak resistance
• Individually pressure tested during production
• Fits select 1996-2005 Chevrolet Blazer, 1996-2004 Chevrolet S10, and 1996-2004 GMC Sonoma applications

Detailed Description

OSC Part Number 1826 is a replacement radiator designed to match original equipment form and function for high-mileage cooling system service. The unit uses premium materials, plated cooler circuits, and factory-style fitment dimensions to support proper installation in applications such as the Chevrolet Blazer, Chevrolet S10, and GMC Sonoma. OSC also applies engineering updates to address common original design weaknesses, including improved fin density and enhanced cooler capacity where needed.

This radiator cross-references APDI 8011826, Four Seasons 56011, Koyorad A1826, and Spectra Premium CU1826 for the same application.

What It Helps Address

• Overheating caused by a worn or restricted radiator core
• Coolant leaks from aging tanks, seals, or header connections
• Transmission temperature concerns tied to radiator cooler failure
• Engine oil cooler circuit issues in equipped vehicles
• Cooling performance loss in higher-mileage Chevrolet Blazer, S10, and Sonoma trucks

Installation Notes and Fitment

Fits 1996-2005 Chevrolet Blazer, N/A. Fits 1996-2004 Chevrolet S10, N/A. Fits 1996-2004 GMC Sonoma, N/A. Fits 1996-2001 GMC Jimmy, N/A. Fits 1996-2001 Oldsmobile Bravada, N/A. Fits 1997-2000 Isuzu Hombre, N/A.

Verify inlet and outlet dimensions, cooler line routing, and overall core measurements before installation. This radiator is a direct-fit style replacement for vehicles originally equipped with crossflow cooling and integrated oil cooler circuits.

Quality Assurance

OSC tests the radiator core before assembly, then tests the completed unit again after assembly. The transmission and engine oil coolers are also tested prior to installation into the tank, and each radiator is pressure tested during production to help confirm sealing and performance.