Easily convert your Aeromotive Gerotor style mechanical fuel pump from Gilmer style pulleys and belt to HTD style with this replacement pump pulley.  Works exclusively with the 1/2" drive shaft and 1/8" key-way on either the Aeromotive red 6-gpm P/N 11105 or the black 12-gpm P/N 11115 mechanical fuel pump.  Convert from the standard Gilmer style square-tooth cog-belt (1/2" wide "L" pitch timing belt) to the hi-torque HTD or radius tooth (15mm wide 5M pitch HTD timing belt).  This is the driven pulley for the pump.

Multiple matching drive pulleys for various pump to engine drive-ratios are available here to optimize fuel pump speed and ensure full fuel pump flow capacity.  Note: maximum pump speed should be at least 4,000 pump RPM and not exceed 5,000 pump RPM.

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


• 56 tooth driven pulley for installation on pump.


• Compatible with 1/2" drive shaft with 1/8" key.


• For use with P/N 11105 and 11107 Belt Drive Fuel Pumps.


• Compatible with multiple HTD style drive pulley options available to optimize pump speed to engine RPM.


• HTD Drive Pulleys for 50% - 71% Drive Ratios available.


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

HTD Drive Pulley options for 1" drive mandrel available:  click here.