Which term refers to the partition between engine and passenger compartments in vehicles?

• A. Firewall
• B. Bulkhead
• C. Dash panel
• D. Cab separator

Answer: (A)

The barrier between the engine bay and the passenger area is called the firewall. Its purpose is to resist heat, flames, and toxic gases from reaching the cabin, helping protect occupants and give them a chance to escape. It’s typically a fire‑resistant panel, often with insulating material, designed specifically to slow or stop fire from crossing into the passenger compartment.

A bulkhead is a general term for any separating wall, and a dash panel or cab separator refer to interior components, not the fire-resistance function. That specific fire‑stopping role makes firewall the best term.