§ 90.407 - Engine inlet and exhaust systems.

Latest version.

§ 90.407 Engine inlet and exhaust systems.

(a) The engine manufacturer is liable for exhaust emission compliance over the full range of air inlet filter systems and exhaust muffler systems.

(b) The air inlet filter system and exhaust muffler system combination used on the test engine must be the systems expected to yield the highest emission levels.

                    
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§ 90.407 - Engine inlet and exhaust systems.

§ 90.407 Engine inlet and exhaust systems.