Maintenance: Application and ID
Light Duty Emissions applies to 1500 and 2500 models except those equipped with 8.0L engines.Medium Duty Emissions applies to 2500 and 3500 models with 8.0L engines and equipped with California emissions package.
Heavy Duty Emissions applies to 2500 and 3500 models with 8.0L engines and Federal emissions package, and all with 5.9L gas engines.