CARB Executive Order · Other Engine Part
EO D-9-4
Company D-9 · Ball-matic AIR Injector
- Executed
- November 1976
- Rows shown
- —
- PDF pages
- 33
We show basic details only for this EO. Its vehicle list is not a ruled table we can read reliably (often a scanned table or a list in the text), so we do not copy it. Check the vehicles and part numbers in the original PDF.
What the EO says about the part
The device consists of an air modulating valve with a filter and is inserted between the PCV valve and the intake manifold. This valve permits a small amount of additional air to enter the PCV line. This device can be identified by the name "Ball-Matic Air Injector" per- manently stamped at the bottom of the device housing.
Quoted from EO D-9-4. The EO exempts the part from California Vehicle Code Section 27156 only for the vehicles it lists.
More EOs from Company D-9
All 6 Company D-9 EOs we read All vehicles with an EO-listed other engine partSource: CARB Executive Order D-9-4 (PDF), retrieved November 11, 2026. EOs can be amended, superseded or revoked; CARB's copy is the authority. Independent reference, not affiliated with CARB.