[Code of Federal Regulations]
[Title 40, Volume 15]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR85.502]

[Page 518-519]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 85--CONTROL OF AIR POLLUTION FROM MOBILE SOURCES--Table of Contents
 
     Subpart F--Exemption of Aftermarket Conversions From Tampering 
                               Prohibition
 
Sec. 85.502  Definitions.

    (a) The Act means the Clean Air Act as amended (42 U.S.C. 7501 et 
seq.).
    (b) Administrator means the Administrator of the Environmental 
Protection Agency or his or her authorized representative.
    (c) Aftermarket conversion system means any combination of hardware, 
including but not limited to fuel storage and fuel metering hardware, 
which is installed on a light-duty vehicle, light-duty truck, heavy-duty 
vehicle, or heavy-duty engine with the effect of allowing the vehicle or 
engine to operate on a fuel other than the fuel which the vehicle or 
engine was originally certified to use. Components which do not affect 
the emissions performance of the converted vehicle or engine, as 
determined by the Administrator, are not included for the purposes of 
this subpart.

[[Page 519]]

    (d) Aftermarket conversion installer means any company or individual 
which installs an aftermarket conversion system on a light-duty vehicle, 
light-duty truck, heavy-duty vehicle, or heavy-duty engine with the 
effect of allowing the vehicle or engine to operate on a fuel other than 
the fuel which the vehicle or engine was originally certified to use.
    (e) Aftermarket conversion certifier means any company or individual 
which assembles the various aftermarket conversion hardware components 
into a particular combination or configuration and certifies that 
combination or configuration according to the provisions of this 
subpart.
    (f) Model Year means the manufacturer's annual production period (as 
determined by the Administrator) which includes January 1 of such 
calendar year: Provided, That if the manufacturer has no annual 
production period, the term model year shall mean the calendar year.