Water Pump LS1 Long GEN III & IV

The STEWART Water Pump LS1 Long for GM LS-Series Generation III and IV engines is an essential cooling system component designed to maintain optimal engine temperature during high-performance driving and sustained operation. This long-style water pump is specifically built for LS1, LS2, LS3, LS6, and LS7 platforms, making it ideal for automotive enthusiasts who require reliable thermal management in various applications, including street, track, and modified setups.

Constructed from precision cast aluminum, the Stewart water pump features tight manufacturing tolerances that match or exceed OEM specifications. Its long-style configuration ensures a direct fitment to engines requiring the extended mounting pad, which helps maintain proper belt tension alignment. The integrated bearing assembly and mechanical seal design work together to minimize internal leakage, while the high-capacity impeller is engineered to deliver consistent flow across the full RPM range, preventing hot spots and cavitation even under high-load conditions.

LS engine builders, drag racers, road course competitors, and street performance enthusiasts will find the STEWART Water Pump LS1 Long to be a core component in their reliable builds. Its straightforward installation on vehicles with the long-pad engine block makes it a practical choice for both stock rebuilds and heavily modified power plants. With its proven performance and durability, this water pump is a trusted choice for those seeking to enhance their engine's cooling efficiency.