LS and LT Radiator for 1991-1996 B-Body (Impala/Caprice/Roadmaster)
Swapping an LS or LT engine into a 1991-1996 Impala with automatic transmission demands a cooling solution that maintains stable temperatures under varied driving conditions. This Impala Radiator Auto Trans relies on a TIG welded aluminum core and tanks to shed heat quickly while resisting corrosion over repeated cycles. Every mounting tab and transmission cooler port aligns precisely with the original positions on Impala, Caprice, and Roadmaster chassis so installers can reuse the factory fan and shroud without trimming or extra brackets. With its broad core surface and dense fin spacing, coolant flows through a compact array that keeps temperatures within safe limits during both highway cruising and steep climbs.
Precision TIG welded Aluminum Assembly
This radiator core and tanks are joined using a TIG welding process that fuses every aluminum panel into one seamless unit. By eliminating joints and gaskets, this method prevents leaks and cracking that often develop when the radiator heats and cools repeatedly. The fully aluminum structure reacts quickly to temperature changes, allowing coolant to shed heat more effectively than mixed‐metal cores. Under vibration or engine movement, the unified design resists fatigue, giving you a reliable heat exchanger that endures daily driving or spirited acceleration.
Optimized Core and Fin Structure for LS and LT Engines
Swapping an LS or LT motor into a B-Body platform increases thermal load, and this radiator's broad core area handles that demand with ease. Tightly packed aluminum fins maximize surface contact with passing air, accelerating heat dissipation from the coolant. The arrangement prevents hotspots around cylinder heads and block rails, reducing the risk of gasket failures or oil breakdown during long highway runs or steep climbs. The result is stable coolant temperature under a wide range of driving conditions, ensuring consistent engine performance.
Direct Fit for Stock Fan and Shroud
Every mounting tab aligns with the original Impala, Caprice, and Roadmaster chassis points, so installers can reuse the factory fan and shroud without trimming or extra hardware. This exact fit preserves the airflow pattern engineered by the manufacturer and maintains proper fan clearance for reliable cooling. By retaining stock components, you avoid alterations to electrical wiring or control modules, cutting labor time and complexity. The outcome is a clean underhood appearance and plug-and-play installation that works from the first start.
Tailored Corrosion Protection Options
Choose between the natural finish of bare aluminum or a protective black epoxy coating that seals the surface against salt, road grime, and moisture. The oxide layer on bare aluminum forms quickly to guard against mild corrosion, while the epoxy adds a denser barrier for winter or coastal climates. Both treatments preserve the radiator’s structural integrity and cooling performance by preventing pitting that can block fins or disrupt coolant flow. This flexibility lets you match finish and protection to your climate without sacrificing function or resale value.
Count on this radiator for consistent performance and see the same radiator but with fans in our 1991-1996 Impala Radiator (Automatic Transmission) with Fans.