WAC 204-10-038
Exhaust system. A motor vehicle must be
equipped with a leakproof exhaust system that includes the
exhaust manifold(s), headers, the piping leading from the
flange of the exhaust manifold(s), the muffler(s), and the
tail piping.
Exhaust systems on property-carrying vehicles must:
(1) Discharge the exhaust fumes to the rear of that part
of the vehicle designed and normally used for carrying the
driver and passengers.
(2) Discharge the exhaust fumes at a location to the rear
of the vehicle body or direct the exhaust fumes outward from
the side of the vehicle body at a location rearward of any
operable side windows.
(3) Not have any part of the exhaust system pass through
any area of the vehicle that is used as a passenger
compartment, nor in close proximity to the fuel system without
being properly shielded.
[Statutory Authority: RCW 46.37.005 and 46.37.320. 08-19-079, § 204-10-038, filed 9/16/08, effective 10/17/08.]