Tandem Pump with 33t HTD Sweet Pulley

The Tandem Pump with 33t HTD Sweet Pulley (MPN 305-85900) is a precision-engineered belt drive component designed for high-performance engine builders and automotive enthusiasts tackling complex fuel system and auxiliary power applications. This dual-pump configuration delivers the flow capacity and reliability demanded by modified engines running fuel injection, superchargers, or twin-engine setups where single-pump capacity falls short. Whether you're building a street rod, drag racer, or custom performance vehicle, a tandem pump assembly eliminates the compromise between displacement and fuel delivery.

The 33-tooth HTD (High Torque Drive) pulley ensures synchronized, slip-free power transfer from your engine's crankshaft or accessory belt to both pump stages, maintaining precise volumetric efficiency under sustained high RPM operation. SWEET's engineering leverages HTD profile geometry—reinforced teeth and deeper engagement—to handle the torque load of dual pump displacement without degradation. Weighing 6.43 lbs with compact overall dimensions of 7.8 x 7.65 x 9.1 inches, this assembly fits within tight engine bay constraints typical of custom restorations and tube chassis platforms while delivering robust flow rates across a broad RPM band.

Serious builders choosing a tandem pump setup benefit from redundancy, increased fuel system pressure capability, and the ability to run larger injectors or multiple fuel rails without bottlenecking delivery. This assembly pairs seamlessly with aftermarket fuel regulators, surge tanks, and custom plumbing networks common in competition and street performance applications. Verify pulley pitch compatibility with your existing crankshaft or accessory drive configuration before installation; HTD belt sizing and center-distance geometry are critical for proper mesh and long service life.