diesel parts app G final 12-2009 PDF

A documentation detailing aftermarket parts verification guidelines for gasoline and diesel vehicles. The document categorizes aftermarket parts into replacement, consolidated, modified, and add-on parts, explaining the requirements for California Air Resources Board (CARB) exemption. It outlines the smog check criteria, providing definitions, examples, and requirements for each category of parts. The guidelines emphasize compliance with emission control norms and list parts exempt from or requiring CARB checks. Key components such as carburetors, exhaust headers, and catalytic converters are discussed, with specifications for legal compliance.