Spectra Premium radiator CU1693 direct-fit for Chevrolet & GMC with EOC/TOC, full-width core

Spectra Premium CU1693 is a direct-fit replacement radiator engineered to restore reliable, high-efficiency cooling for select Chevrolet and GMC vehicles without modifications.

This full-size radiator combines updated manufacturing methods with rigorous quality checks to reproduce—or surpass—the cooling performance of the original unit. It ships complete with engine oil cooling (EOC) and transmission oil cooling (TOC) provisions, precision headers, and factory-compatible inlet and outlet sizes so installation is straightforward and dependable.

How does this radiator match my original equipment?

The CU1693 is vehicle-specific and built to the same mounting points, hose locations, and flow dimensions as the factory radiator so no cutting, drilling, or adapters are needed. Materials and assembly methods are chosen to replicate OE heat transfer and mechanical strength.

• Exact fit height 34 in × width 17-1/4 in × thickness 1-1/4 in
• Inlet header 18-1/2 in × 3-3/16 in; outlet header 18-3/4 in × 3-3/16 in
• Inlet diameter 1-1/4 in; outlet diameter 1-9/16 in

What cooling features improve performance during heavy use?

Designed for efficient heat exchange, this radiator maximizes coolant flow through optimized core geometry and header design. Stable flow paths help keep engine and transmission temperatures under control during towing, city traffic, or high-load driving.

• Full-width core for improved cooling surface area
• Engineered headers and inlet/outlet sizing for consistent circulation
• Manufactured to reduce hotspots and improve temperature distribution

Will the CU1693 hold up over time and with heavy duty use?

Production processes emphasize durability, including strict quality inspection and corrosion-resistant materials. The radiator is sodium-free and assembled to resist common causes of premature failure while maintaining thermal performance.

• Robust construction with corrosion-conscious materials
• Quality control tests to ensure leak-tight seals and welds
• Designed for long service life under typical driving stresses

How easy is installation and what components are included?

The CU1693 is intended as a direct replacement so most installations follow the OEM removal and install steps without fabrication. Because it accommodates engine and transmission cooling lines, the radiator integrates with existing connections for a hassle-free swap.

• Direct-fit design — no drilling or alterations required
• Compatible with existing EOC and TOC lines and fittings
• Mounted to OEM-style attachment points for fast alignment

Who is this for: Drivers of compatible Chevrolet and GMC models who need a reliable, OEM-style radiator replacement—whether restoring a vehicle after a failure, preparing a truck for heavy-duty use, or replacing an aging cooling core. This unit suits owners who want a precision-fit, factory-compatible radiator with solid thermal performance and long service potential.