I am informed that NAPA 183081, which retails for around $15, crosses to a Jabsco 1210-0001 impeller, which is sold for about 50% more in some stores. I use the Jabsco # in both the Johnson pump on my port Lehman 120 and in the Jabsco pump on my stbd engine. Has anybody used the NAPA version? Rich Gano CALYPSO (GB-42 #295) Southport, FL