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28-Tooth Drive Pulley
InfoVehicle Info Needed
AEROMOTIVEPART NUMBER: 027-21109

28-Tooth Drive Pulley

$19763
ShippingShips on Nov 02, 2026
Lowest PriceLowest Price Guarantee

Belt Drive Accessories
Fuel Pump Drive Cog Belt Pulley
  • 28 Tooth
  • Sold Individually

    Aeromotive belt drive and hex drive components let you run a spur gear mechanical fuel pump off the engine, a proven setup for high horsepower race engines that need consistent fuel volume. This 28 tooth cog pulley sets the pump drive ratio.

    Aeromotive 21109 Cog Belt Pulley Features:

    • 28 Tooth
    • Sold Individually
  • The Big Block Chevy Belt Drive Kit can produce 2 to 200 psi with enough volume to support a 2500 HP Big Block Chevy. Designed to mount lower left (modification required to mount on right).

    Kit Includes:

    • Fuel pump 027-11105 (below)
    • Pump pulley & crank pulley
    • Billet drive mandrel & cog belt
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    • Mounting bracket, adjustment shims, and hardware if needed, compatible regulators for the kit are sold separately:
    • EFI applications use regulator 027-13113
    • Carbureted gasoline applications use regulator 027-13202 or 027-13212
    • Carbureted alcohol applications use 027-13209 or 027-13214

    The Big Block Chevy Belt Drive Fuel System guarantees unmatched pressure control and precise, accurate, repeatable, reliable fuel delivery for carbureted methanol or ethanol vehicles. It includes kit 027-17241 (above) and regulator 027-13209. Matched components maximize performance & consistency. Idle pressure can be adjusted separately from high-RPM settings without other jets, pills, or valves.

    Billet Fuel Pumps are designed to solve fuel delivery problems in high-HP carbureted gasoline, carbureted methanol, or EFI applications. Available standard or high-flow with belt or hex drive, all billet fuel pumps are lightweight and compact. Standard pumps have ORB-10 ports and 3600 HP gas/1800 HP methanol ratings. High-flow pumps have removable ports with 1.25" inlet/-12AN O-ring outlet and 7000 HP gas/2500 HP methanol ratings. Hex units can be mounted and driven directly from the back of a properly prepared external oil pump or by the cam via timing cover adapter. They use a 3/8" hex drive shaft and adjustable billet collar with 3-bolt mounting pattern and hardware. Aeromotive Billet Fuel Pumps are also E85 compatible.

    The Belt Drive Fuel Pump Kit is designed to provide the do-it-yourselfer with the components necessary to correctly install a full-on Aeromotive fuel system: fuel pump 027-11105 (below), universal billet collar bracket, and 28-tooth cog-driven pulley. The bracket allows pump mounting on the left or right of the damper. Compatible with carbureted or fuel-injected engines from 250 to 2000 horsepower.

    Part TypeFuel Injection Pump Pulley
    Product LineAeromotive Belt and Hex Drive Fuel Pumps
    BrandAEROMOTIVE
    Package Height2.9
    Package Width5.7
    Package Length5.7
    Weight0.98 PG
    Part CategoryPerformance Parts
    Pulley StyleGilmer
    Pulley FinishNatural
    QuantitySold Individually
    Part FitmentSemi Universal
    Pulley MaterialAluminum
    Pulley Groove Quantity28
    Meets Or Exceeds Original Equipment ManuYes
    Vendor Part Number21109
    Package Qty1
    Package TypeEA

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