Weiand Action +Plus Aluminum Mechanical Water Pump

The Weiand Action +Plus series represents decades of American performance engineering condensed into a purpose-built, high-performance mechanical water pump line. Replacing heavy OEM cast-iron units with lightweight aluminum construction, the Action +Plus line delivers a genuine bolt-on cooling system upgrade — no external power source required, no compromises on reliability.

Key Features:

• Significant weight reduction — lightweight aluminum construction reduces front-end mass by 30% to 50% compared to stock cast-iron pumps, improving overall vehicle balance and performance
• Six-blade stamped steel anti-cavitation impeller — engineered for optimum coolant flow while consuming less horsepower than stock; resists cracking, corrosion, and fatigue that can affect aluminum impellers at high RPM
• Exclusive "Twisted Snout" housing design — a signature Weiand aesthetic combined with a completely redesigned internal layout for superior performance and a distinctive underhood appearance
• Exclusive counterbore housing design — positively retains the bearing within the housing, preventing bearing walk-out — a common high-performance failure point
• Premium heavy-duty bearing and seal package — delivers twice the load capacity of stock pumps for extended service life under demanding conditions
• Heavy-duty shaft construction — engineered specifically for durability and reliability in high-performance applications
• Extra heavy-duty pulley hubs — robust hub construction ensures consistent, reliable belt-driven operation across all configurations
• OEM-compatible bracket bosses and coolant connections — all necessary mounting provisions and water connections included for popular performance applications
• CNC-machined aluminum housing — precision machining ensures accurate fitment and efficient coolant flow
• Zinc-plated back covers and hardware — provides corrosion resistance and long-term durability
• 100% leak tested — every pump is pressure tested before leaving the factory for guaranteed quality assurance
• Mounting gasket included — everything needed for a complete, straightforward installation

Emissions Compliance: Action +Plus water pumps are legal for use on emissions-controlled vehicles, non-emissions-controlled vehicles, and racing-use applications, as they do not affect vehicle emissions systems.

Weiand has been a cornerstone of American performance parts manufacturing since the 1930s, introducing the first aluminum intake manifold in 1937 and high-performance aluminum water pumps in the early 1970s. The Action +Plus series reflects that deep engineering heritage — available in multiple configurations to suit a variety of popular performance engines, and consistently delivering cooling system performance that exceeds OEM standards in both efficiency and durability.