LS and LT Radiator for 1988-1993 Chevy C/K Series C1500 K1500 Suburban
The 1988-1993 LS Radiator 34" Core Width (Auto Trans) with Fans addresses the demands of LS and LT engine conversions in GMT400 OBS C1500, K1500 and Suburban trucks. It features a full width 34 inch aluminum core and two high performance fans to maintain engine and transmission temperatures under towing or idling. Compatible with both LS and LT powerplants, it ensures fitment without modifications to radiator support or hoses. All tanks and the core are 100% TIG welded from high grade aluminum for robust construction. Offered in bare aluminum or black epoxy, it retains factory C/K Series mount points while delivering reliable thermal control. Made in USA for exact fitment in 1988 to 1993 Chevy models.
Enhanced Core Design
The 1988-1993 LS Radiator features a full width 34 inch aluminum core that maximizes heat transfer surface. By expanding the cooling area beyond factory limits, this core design lowers coolant temperature under hard acceleration or sustained high RPM. The aluminum material balances thermal conductivity with weight savings, delivering improved temperature control without adding mass. This efficiency boost directly supports engine longevity and steady power delivery, even in restored or upgraded LS and LT installations.
Integrated Fan Assembly
Equipped with dual high-performance fans installed at the factory, this radiator ensures consistent airflow at low road speed and in stop-and-go traffic. The fan units are wired for plug-and-play operation using the stock relay circuit, preserving original engine bay logic and reducing wiring complexity. Their balanced blades and shrouded housing focus airflow across the full core, preventing hotspots when towing, racing or cruising. This integration maintains safe operating temperatures for automatic transmission models without additional aftermarket controls.
Precision Construction Quality
Built with 100% TIG welded high grade aluminum tanks and core, each radiator undergoes a strict inspection process to verify joint integrity under high pressure. TIG welding provides uniform bead profiles and full penetration, eliminating weak points that can lead to leaks over time. Every unit is stress tested to confirm no deformation or flow restriction. The result is a durable radiator that resists corrosion and endures the heat cycles common in performance and daily driver scenarios.
Seamless C/K Series Compatibility
Made in USA and engineered specifically for 1988 to 1993 Chevy C1500, K1500 and Suburban C/K Series (GMT400 OBS) trucks with automatic transmission, this radiator retains factory C/K Series bracket locations and filler neck orientation, preserving original hose routing and powertrain angle. This guarantees optimal transmission cooler geometry and prevents stress on cooling lines. Installers benefit from perfect alignment without the need for custom tabs, making installation into restomod or refreshed vintage builds straightforward and reliable.
For the same radiator but without fans, consider our 1988-1993 LS Radiator 34" Core Width (Automatic Transmission).