The piece of body separating the engine from the interior which would what normally be called "fire wall" is not called firewall anymore. Most manufacture call it the "bulk head" True story: A woman was driving her vehicle & a fire stated in her engine bay. Well she pulled over & stayed in her car, supposedly called for help but stayed in her car with the mentality of the "fire wall" being fire proof. Well She died, the family sued the car company. The family won & now most manufacture call it a "bulk head"

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2001 E55

2001 E320 Sedan

2001 Subaru Legacy

2006 SLK280

2016 Subaru Outback 3.6