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Retrofit/Rebuild Requirements for 1993 and Earlier Model Year Urban Buses; Status of Equipment Certified and Emissions Levels To Be Used by Operators Using Compliance Option 2
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
PM post-
PM pre-rebuild rebuild
Engine models Model year certification certification Code Family
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
level level
DDC 6V92TA MUI............... 1979-87......... 0.50.......... 0.30.......... All........... All.
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
1988-1989....... 0.30.......... 0.22.......... All........... All.
DDC 6V92TA DDEC I............ 1986-89......... 0.30.......... 0.23.......... All........... All.
DDC 6V92TA DDEC II........... 1988-91 (w/out 0.31.......... 0.23.......... All........... All.
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
PM trap).
1992-93 (w/out 0.25.......... 0.19.......... All........... All.
PM trap).
1993 (w/ PM 0.07.......... 0.07.......... All........... All.
trap).
DDC Series 50................ 1993............ 0.16.......... 0.16.......... All........... All.
DDC 6V71N.................... 1973-87......... 0.50.......... 0.38.......... All........... All.
DDC 6V71N.................... 1988-89......... 0.50.......... 0.38.......... All........... All.
DDC 6V71T.................... 1985-86......... 0.50.......... 0.38.......... All........... All.
DDC 8V71N.................... 1973-84......... 0.50.......... 0.38.......... All........... All.
DDC 6L71TA................... 1990............ 0.59.......... 0.59.......... All........... All.
DDC 6L71TA................... 1988-89......... 0.31.......... 0.23.......... All........... All.
DDC 6V71TA DDEC.............. 1990-91......... 0.30.......... 0.23.......... All........... All.
DDC 8V92TA................... 1979-87......... 0.50.......... 0.38.......... All........... 8V92TA
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
1988............ 0.39.......... 0.29.......... All........... 8V92TA.
DDC 8V92TA-DDEC.............. 1988............ 0.41.......... 0.31.......... All........... 8V92TA-DDEC II.
DDC 8V92TA................... 1989............ 0.47.......... 0.35.......... 9E70.......... KDD0736FW89.
DDC 8V92TA................... 1989............ 0.39.......... 0.29.......... 9A90.......... KDD0736FW89.
DDC 8V92TA................... 1989............ 0.34.......... 0.26.......... 9G85.......... KDD0736FW89.
DDC 8V92TA DDEC.............. 1989............ 0.41.......... 0.31.......... 1A............ KDD0736FZH4.
DDC 8V92TA................... 1990............ 0.47.......... 0.35.......... 9E70.......... LDD0736FAH9.
DDC 8V92TA DDEC.............. 1990............ 0.49.......... 0.37.......... 1A............ LDD0736FZH3.
DDC 8V92TA DDEC.............. 1991............ 0.25.......... 0.19.......... 1A or 5A...... MDD0736FZH2.
DDC 8V92TA DDEC.............. 1992-93......... 0.21.......... 0.16.......... 1D............ NDD0736FZH1 &
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
PDD0736FZHX.
DDC 8V92TA DDEC.............. 1992-93......... 0.29.......... 0.22.......... 6A............ NDD0736FZH 1 &
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
PDD0736FZHX.
DDC 8V92TA DDEC.............. 1992-93......... 0.20.......... 0.15.......... 5A............ NDD0736FZH 1 &
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
PDD0736FZHX.
DDC 8V92TA DDEC.............. 1992-93......... 0.25.......... 0.19.......... 1A............ NDD0736FZH 1 &
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
PDD0736FZHX.
CUMMINS L-10................. 1985-1987....... 0.65.......... 0.34.......... All........... All.
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
1988-1989....... 0.55.......... 0.34.......... All........... All.
1990-1992....... 0.46.......... 0.34.......... All........... All.
L-10EC....................... 1992............ 0.25.......... 0.25.......... All........... All.
Cummins L-10 EC w/trap....... 1993............ 0.05.......... 0.05.......... All........... All.
Alternatively Fueled Engines. pre-1994........ 0.10.......... 0.10.......... All........... All.
Other Engines................ pre-1988........ 0.50.......... 0.50.......... All........... All.
[[Page 42766]]
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
1988-1993....... Certification Certification All........... All.
level. level.