Awesome, love my basslink II. Lots of sound, and easy to remove when you need the room.

Which filer!?!?!
OEM
BMW E53 X5 N62 4.4l > Maintenance > Engine > Fuel Filter > ES#36771 Fuel Filter - 16126754016
MANN
BMW E53 X5 N62 4.4l > Maintenance > Engine > ES#1873505 Fuel Filter - 16126754016

Same applies for oil filter??
http://www.ecstuning.com/BMW-E53-X5-...ilter/ES24003/
ILI
http://www.ecstuning.com/BMW-E53-X5-...lter/ES250624/

stick with OEM sparkplugs. Plugs with more than 1 electrode are worthless and more expensive. Either get OEM plugs or OEM equivalent. Always measure sparkglug gap even if they are 'pregapped'.

Yeah, if your X has that many miles and you are planning to do the Plugs, chances are you are going to need to replace valve cover gaskets. If you never changed them before, your plugs are probably swimming in oil.

As for the plugs themselves, all that hype about high performance plugs and stuff. Really, they don't do squat. There was an article here at one point having an in depth discussion about plugs. I might still be floating around here. Anyways, just get the OEM plugs and you are good to go.. And don't worry about the gapping because they are pre-gapped and you can't re-gap them anyways. OEM plugs are 4 prong. My original were 4 prong Bosch and 4 prong Bosch went back in.

Either will work fine in your SAV. I am currently a few Mann filters on my car.

ECS Tuning