Spectre Performance 4399 Aluminum Double Belt Crankshaft Pulley for Small Block Chevy with Short Water Pump<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Machined aluminum finish</li><li>Double belt groove</li><li>6-5/8 In. diameter-note: identify the water pump by looking at the distance between it and the timing cover， short water pumps are almost touching the</li><li>Easy to install</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41BZ3NGPgdL.jpg" noproxy>