All three of mine have an Interstate...each replaced the OEM. They do have the "skirts" on the bottom sides of the case to anchor them to the battery tray...just make sure you get the correct group and size (the R129 has a weird skinny one to fit in the fenderwell recess in the rear).

Don't recall the product number(s) though, but they seem to do a fine job.

They don't get tested by harsh winters down here, but heat can take down lesser batteries...

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car