Aftermarket parts
Appendix C of the Smog Check Manual pertains to...
Add-on Part
Any aftermarket part which is not a modified part or a
... [Show More] replacement part.
Consolidated Part
A part which is designed to replace a group of original equipment parts and which is functionally identical to those original parts in all respects which in any way affect emissions (including durability).
Modified Part
Any aftermarket part intended to replace an original equipment emission-related part and which is not functionally identical to the original equipment part in all respects which in any way affect emissions, excluding a consolidated part.
Replacement Part
Any aftermarket part intended to replace an original equipment emissions-related part and which is functionally identical to the original equipment part in all respects which in any way affect emissions (including durability) or a consolidated part.
Modified Parts and Add-on Parts
As part of the inspection, inspectors shall verify whether CARB exemption is required for which parts?
California Vehicle Code Section 27156
This CA code prohibits modifications to emission control devices or systems without an exemption from ARB.
ARB Executive Order (EO)
Aftermarket parts that modify or affect the original emission controls must be exempted through...
Replacement Parts and Consolidated Parts
In general, these aftermarket parts do not require ARB exemption.
1996 and newer, or any MY equipped with a Thermostatic Air Cleaner
Which vehicles require verification of EO for an aftermarket air cleaner?
1995 and older without a Thermostatic Air Cleaner
These vehicles do not require verification of EO for an aftermarket air cleaner.
All gasoline and diesel vehicles
Which vehicles require verification of EO for aftermarket air flow sensors?
No
Do any vehicles require verification of EO for aftermarket intake manifolds?
Provisions for the original equipment emission controls
In order to be acceptable, an aftermarket intake manifold must include what?
Marketed by the manufacturer as a replacement for the factory original
In order to be acceptable, an aftermarket intake manifold must be...
Yes
Is it acceptable for a replacement intake manifold to be made of a different material than the factory original?
Diesel vehicles
Which vehicles require verification of EO for an aftermarket intercooler (equipped with OEM turbocharger/supercharger)?
All gasoline and diesel vehicles
Which vehicles require EO verification for an aftermarket turbocharger/supercharger, including related parts such as wastegate, pulleys, etc.?
All gasoline and diesel vehicles
Which vehicles require EO verification for variable or alternate tuning devices such as modules, chips, PROMs, tuners, pods, or anything else that modifies or conditions ECU inputs or outputs?
No
Do DLC plug-in telemetry devices or read-only devices require an EO?
Yes
Are any minor configuration changes of air injection rails allowed?
None
Which vehicles require EO verification for add-on/modified air injection rails?
All gasoline and diesel vehicles
Which vehicles require EO verification for EGR system modifications?
No
Do replacement EGR parts require EO verification? [Show Less]