I've just replaced the halogen headlamps on my base 2008 Prius and discovered the passenger rubber boot that is supposed to cover the lamp is missing. I had purchased the car used 18 months ago and have had no problems. I'm concerned because even out here in LA, we do expect rain late next week and I would hate to have water find its way to that headlamp and short something out. Can someone provide the part number or a place where I might get a new or used boot? Thanks.