This specification covers silencing systems and silencing system components that are intended to be fitted as replacement parts to motor vehicles of categories M.,, M2, M3, N1: N2 and N3. Amdt 1
2 It does not cover replacement silencing systems or silencing system components for motor vehicles of other categories or for motor cycles.
NOTE
a) The standards referred to in the specification are listed in appendix A.
b) Information regarding the verification of the quality of replacement silencing systems produced to this specification and a sampling plan that could be used to assess compliance with the specification of a lot of replacement silencing systems are given in appendix B.