I can't think of anything in the filter area that if damaged could cause the EFI fuse to blow. It's a pretty strange coincidence though, and makes sense it has something to do with you servicing the van. If this happened to me I would retrace all my steps looking for anything possible I may have caused. If that doesn't turn up anything, I would start troubleshooting the circuit by disconnecting parts of the circuit (one by one) until the short goes away. I'd put a load across the fuse conductors of about 5 amps (perhaps a headlight or a fan motor). You'll know you're onto something when the load turns off. Tim

FYI, OEM Toyota filters come with that bracket, so if it's wasted, get a Toyota filter.