Crankshaft Pulley, Cast, single groove, 30% reduction, BBC short water pump Precision machined from high grade, lightweight Aluminium castings Extra-deep belt grooves provide added belt retention during rapid changes in engine RPM Small pulley diameter slows fan, water pump, and alternator speed to reduce horsepower-robbing drag High RPM water pump operation is improved, reducing impeller speed below cavitation threshold Uses 36° x 17/32 wide belt
Crankshaft Pulley, Cast, single groove, 30% reduction, BBC short water pump Precision machined from high grade, lightweight Aluminium castings Extra-deep belt grooves provide added belt retention during rapid changes in engine RPM Small pulley diameter slows fan, water pump, and alternator speed to reduce horsepower-robbing drag High RPM water pump operation is improved, reducing impeller speed below cavitation threshold Uses 36° x 17/32 wide belt