Serpentine Crank Pulley 2.5

The Serpentine Crank Pulley 2.5 is a precision crankshaft pulley engineered for vehicles requiring reliable serpentine belt drive integration. Manufactured by KRC Power Steering, this component is essential for high-performance and marine engine applications where dependable power transmission and minimal vibration are critical. Whether you're rebuilding an engine, upgrading a racing platform, or maintaining heavy-duty equipment, this pulley delivers the durability and precise engineering expected from a leader in crank pulley systems.

Constructed from aluminum and finished in black anodize, the Serpentine Crank Pulley 2.5 features a 2.5-inch diameter with a 6-rib serpentine groove designed for optimal belt grip and reduced slippage. The R-Lok pulley drive system ensures secure engagement with standard serpentine belts while minimizing harmonic vibration that can damage accessory components. The anodized aluminum construction provides corrosion resistance and extended service life in demanding engine bay environments, while the precise 4.55 x 1.25 x 5.8-inch dimensions ensure OEM-compatible fitment.

This pulley is ideal for street performance, racing, and marine engine builds where belt-driven accessory reliability cannot be compromised. The R-Lok design provides superior holding power compared to traditional press-fit pulleys, reducing the risk of pulley slip during high-RPM acceleration or engine load spikes. Weighing just 0.29 pounds, it maintains minimal rotational mass while delivering maximum drive security, making it a preferred choice for serious engine builders and performance enthusiasts seeking competition-grade components.