the best thing about RA is their search process. finding a part on Amazon is cumbersome if not downright useless. i have done what moparguy describes (determine RA part number and compare with Amazon Prime), but I always feel a bit bad doing that and sometimes pay a little extra to buy from RA. After all, if no one buys from them they'll disappear and take their search function with them. When I have ordered from Amazon its been because I need a part fast and Amazon is virtually always faster.