Blue Bird Medium/Heavy Truck 
All American FE L6 7.2L 441cid 2004-2006
All American FE L6 8.3L 8268cc 504cid 2003-2005
All American RE L6 7.2L 441cid 2004-2006
All American RE L6 8.3L 8268cc 504cid 2003-2009
BB Conventional L6 7.2L 441cid 2004-2006
Commercial Bus L6 7.2L 441cid 2004-2006
Commercial Bus L6 8.3L 8268cc 504cid 2003-2004
SHL All American L6 7.2L 441cid 2004
SHL Commercial L6 7.2L 441cid 2004-2006
SHL Commercial L6 8.3L 8268cc 504cid 2004

Bluebird Bus
All Models (By Engine) J.Deere 6081; 8.1L (CNG) 2004-2006

Freightliner Heavy Duty 
FL, FLC 112 / 120 Caterpillar 3306, 10.5L 2003-2007
FL, FLC 112 / 120 Caterpillar 3408, 18.0L 2003-2008
FL, FLC 112 / 120 Cummins 555, 9.1L 2003-2008
FL, FLC 112 / 120 Cummins 855 2003-2008
FL, FLC 112 / 120 Cummins 8V-903, 14.8L 2003-2008
FL, FLC 112 / 120 DD 6V-92, 9.0L 2003-2008
FL, FLC 112 / 120 Detroit 8V-92, 12.1L 2003-2008
FL, FLC 112 / 120 K Series 2003-2008
FL, FLC 112 / 120 NTA 2003-2008
FL, FLC 112 / 120 NTC 2003-2008
FL-90 DD 50, 8.5L 2003-2008
FL-90 Mercedes OM366, 6.0L 2003-2008
FLD 112 / 120 Caterpillar C13, 12.5L 2003-2008
WF (C,P,T) Series 21000 2003-2008
WF (C,P,T) Series Caterpillar 1674 2003-2008
WF (C,P,T) Series Caterpillar 1693 2003-2008
WF (C,P,T) Series Detroit 8V-71, 9.3L 2003-2008
WF (C,P,T) Series Detroit DD12V-71, 14.0L 2003-2008
WF (C,P,T) Series K6 2003-2008
WF (C,P,T) Series NH Engs. 2003-2008

Freightliner Medium/Heavy Truck 
Argosy L6 10.8L 10834cc 661cid 2003-2008
Argosy L6 11.1L 11096cc 677cid 2003-2008
Argosy L6 12.7L 12686cc 774cid 2003-2008
Argosy L6 14.6L 14640cc 893cid 2003-2008
Argosy L6 15.8L 15830cc 966cid 2003-2008
Business Class M2 L6 8.3L 8268cc 504cid 2004-2008
Business Class M2 L6 8.3L 8277cc 505cid 2003
Century Class L6 10.3L 10309cc 629cid 2003-2008
Century Class L6 10.8L 10834cc 661cid 2003-2008
Century Class L6 14.0L 14063cc 858cid 2003-2008
FC80 L6 5.9L 359cid 2003-2005
FC80 L6 6.7L 408cid 2006-2007
FL50 L6 6.4L 388cid 2003-2008
FL50 L6 7.2L 441cid 2003-2008