Water Pump Pulley Mopar 383-440 (2-Groove)

The Vintage Air Water Pump Pulley for Mopar 383-440 engines is a precision-engineered 2-groove aluminum component designed for belt-driven cooling system integration on classic B-series and RB-series big-block applications. This 5.813-inch diameter pulley features black anodized finish for corrosion resistance and reliable long-term performance in engine bay environments where thermal cycling and moisture exposure are constant stressors.

The two-groove V-belt configuration matches factory specifications for Mopar B-block (383, 440) and RB-series (426 Hemi) engines, ensuring proper belt tension and drive ratios for water pump operation. Aluminum construction provides weight savings compared to cast iron alternatives while maintaining the structural integrity required for consistent pulley diameter under load. The black anodized surface protects bare aluminum from oxidation and extends service life, particularly critical in restorations where original equipment compatibility matters. At just 2 pounds, this pulley integrates seamlessly into existing serpentine or v-belt configurations without requiring additional brackets or modifications.

This pulley serves restoration enthusiasts, hot rodders, and engine builders who prioritize OEM-correct cooling system architecture. Whether rebuilding a 383 stroker, refreshing original 440 Magnum cooling, or assembling period-correct 426 Hemi components, a properly specified water pump pulley is essential to maintain correct belt tracking and pump flow rates. The Vintage Air 735011 pulley works with standard serpentine or classic v-belt systems, making it versatile across different cooling setups and engine configurations within the Mopar B/RB family.