Section § 393.65: All fuel systems.

Guidance Q&A

Question 1: May a fuel fill pipe opening be placed above the passenger floor level if it is not physically within the passenger compartment?

Guidance: Yes. In addition, the fill pipe may intrude into the passenger compartment as long as the fill pipe opening complies with § 393.65(b)(4), and the fill pipe is protected by a housing or covering to prevent leakage of fuel or fumes into the passenger compartment.