Need Help On Battery Replacement To AGM For 2008 335i

BOosted 335i

Sergeant
Jun 1, 2017
315
104
0
New Jersey
Ride
E90 BMW 335i
After 13yrs of owning my car the battery finally died.so i decided to go from the flooded battery it came with and go with a AGM battery,Theres a guy on youtube "VehicleDIY" did a video on upgrading but my issue is that battery(Interstate H8(49)agm 1355853) cant find it online to buy from interstate.i did find InterstateMTX-49/H8 but not sure if this would fit.the battery that came with my car is
Battery Markings:
BMW
61 21 7 575 572
746075 720 Amps

Guess what im looking for what other e90 335 2006-2008(not sure if 2009 & newer applies here) owners if they have done the AGM upgrade and what Brand was used. I know Interstate is a good name brand and was sliding that way.looking for some feedback,thanks.
 

SlowE93

Major
Jul 2, 2017
1,648
1
954
0
Just a plane ticket away !
Ride
E93
After 13yrs of owning my car the battery finally died.so i decided to go from the flooded battery it came with and go with a AGM battery,Theres a guy on youtube "VehicleDIY" did a video on upgrading but my issue is that battery(Interstate H8(49)agm 1355853) cant find it online to buy from interstate.i did find InterstateMTX-49/H8 but not sure if this would fit.the battery that came with my car is
Battery Markings:
BMW
61 21 7 575 572
746075 720 Amps

Guess what im looking for what other e90 335 2006-2008(not sure if 2009 & newer applies here) owners if they have done the AGM upgrade and what Brand was used. I know Interstate is a good name brand and was sliding that way.looking for some feedback,thanks.
Swapping an H8 to H8 is the same thing. No fitment issues.
Are you not sure if you have H8 ?
 

Torgus

Brigadier General
Nov 6, 2016
2,671
2,193
0
Boston
Ride
ACF 6466 E92 + METH
Duralast gold from autozone. What a trusty steed. And if your smart you'll warranty it out every 2 and a half years and always have a fresh battery

This. a 1000 times this. AGMs are overpriced get a good ol SLA. Unless you want to cut weight I see no need for anything but an SLA. They are also expensive as a way to cut weight depending on what model you get.
 
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