SKU: AER-21112-
21112 28 tooth HTD 5MM Pulley w 1" Shaft Aeromotive

21112   28 tooth  Aeromotive   Fuel Pump Pulley    use w  a 56 tooth      49442 Waterman  or  21116 Aeromotive 

• Designed for 5M pitch, 15mm wide HTD drive belt


• Drive pulley featuring 1/8” keyed 1” bore for any 1” drive mandrel including Aeromotive P/N 21119 and 21120 Drive Mandrels.


• Rated Mechanical Pump flow is at 4,000 Pump RPM. 


• Maximum pump speed should not exceed 5000 RPM. A safe target pump speed is 4,500 RPM.


• To calculate: Pump RPM = Engine RPM x the following %.


• 28 tooth – 50% with 56 tooth driven pulley P/N 21112


• 32 tooth – 57% with 56 tooth driven pulley P/N 21113


• 36 tooth – 64% with 56 tooth driven pulley P/N 21114


• 40 tooth – 71% with 56 tooth driven pulley P/N 21115

This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.

Aeromotive Inc. is a true high performance aftermarket manufacturer specializing in fuel delivery and fuel delivery components. Utilizing aerospace tolerances and procedures, three generations of track experience, and a meticulous approach to engineering, Aeromotive Fuel Systems has become the absolute pinnacle of performance fuel delivery.