http://tinyurl.com/njqf3fb<P>Murray 421409MA Backside Idler Pulley with Approx. 3-3/8-Inch Outside DiameterProduct Review<P> Click on the link for more reviews<P>Murray Part Number 421409; 4214098MA;<P>Also Replaces Murray Part Numbers 91179, and 21409<P>3.35" OD and .50" ID<P>Genuine Murray Part<P>
