Onix OR161 Radiator

Radiator for Classic GM Full-Size Applications

The Onix OR161 radiator is a direct-fit cooling replacement for a wide range of classic Buick, Chevrolet, Cadillac, GMC, Oldsmobile, and Pontiac vehicles. It is built for applications that use an 8-1/2 transmission oil cooler center-to-center layout and do not use an engine oil cooler, with coverage that includes many GM cars, trucks, vans, and Suburban models from 1966-1990.

Key Features

• Direct-fit radiator replacement for select classic GM applications
• Fits vehicles with 8-1/2 TOC (Transmission Oil Cooler; Center to Center)
• For applications without EOC (Engine Oil Cooler)
• Replaces OEM 3-row core configurations
• Engineered with premium components for longer service life and consistent cooling performance
• Onix OR161 radiator for restoration and maintenance work on older Buick, Chevrolet, GMC, Oldsmobile, Cadillac, and Pontiac models

Detailed Description

Onix Automotive positions the OR161 as a premium-quality, drop-in-fit radiator for value-focused repairs and restorations. This radiator is designed for classic GM platforms where correct cooling-system fitment matters, including Chevrolet C10, K10, Caprice, Impala, Monte Carlo, El Camino, and GMC C1500/K1500 applications, along with Buick LeSabre and Riviera, Oldsmobile Cutlass and Delta 88, Cadillac DeVille and Eldorado, and Pontiac Bonneville and Catalina models. The OR161 part number is a practical choice when replacing a worn or leaking radiator on vehicles that originally used a 3-row core and the specified transmission oil cooler layout.

What This Radiator Helps Address

• Overheating caused by a restricted, corroded, or leaking radiator
• Cooling-system loss from age-related tank or core deterioration
• Poor heat rejection in classic GM cars and trucks with original-style cooling layouts
• Fitment issues when replacing an OEM 3-row core radiator
• Transmission cooling concerns on vehicles using the specified TOC configuration

Installation Notes and Tips

Verify radiator dimensions, transmission oil cooler connection layout, and the absence of an engine oil cooler before installation. Confirm the vehicle’s original cooling-system configuration against the fitment notes for the OR161, especially on restored or modified classic GM vehicles. This part cross-references no listed part numbers in the provided data.

Quality Assurance

Onix designs its radiator line with upgraded components and a drop-in-fit approach to support dependable service in everyday repair and restoration use. The brand’s product strategy focuses on delivering value-priced parts with improved service life and performance consistency.