HD Series 2500/3500 Truck (8.1L - Allison Trans) 2001-2003 MSRP - $925 Our Price - Only $889 Includes Titanium Ceramic Coating! Year 200120022003 Emissions w/o A.I.R.w/ A.I.R All product images are property of The Other Guys Performance Products, Inc. and may be subject to copyright.