ATI Pulley - Drive - 4 Grv - Alum - Honda D 5.73

This is an ATI 4-groove aluminum crankshaft pulley, measuring 5.73 inches in diameter. It's designed to fit Honda D-series engines, commonly found in many popular compact Honda models. A crankshaft pulley is crucial because it's driven directly by the engine's crankshaft and in turn drives accessories like the alternator, power steering pump, and air conditioning compressor via belts.

This particular pulley features four grooves, which means it can accommodate up to four accessory belts. This is useful if your setup requires driving multiple accessories or if you're adding aftermarket components that need belt-driven power. The aluminum construction helps keep the overall weight down compared to a stock steel pulley, which can contribute to slightly improved engine response. ATI is a well-known name in performance pulleys, and this part is built to be a solid option for those working on their Honda D-series engine.