CARB Executive Order · Other Engine Part
EO D-35-2
Tungsten Contact Manufacturing Co. · MBI Precombustion Unit-california Design
- Executed
- July 1974
- Rows shown
- —
- PDF pages
- 4
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 two formed screens made of fine mesh wire cloth mounted under the carburetor barrels. The upstream screen is plated with cadmium and the downstream screen with nickel. The "MBI Precombustion Unit-California Design" device is identical in construction and operation to the Hydro-Catalyst Corporation's "Precombustion Catalyst-California Design" device. Reference Executive Order D-35.
Quoted from EO D-35-2. The EO exempts the part from California Vehicle Code Section 27156 only for the vehicles it lists.
More EOs from Tungsten Contact Manufacturing Co.
All 5 Tungsten Contact Manufacturing Co. EOs we read All vehicles with an EO-listed other engine partSource: CARB Executive Order D-35-2 (PDF), retrieved November 11, 2026. EOs can be amended, superseded or revoked; CARB's copy is the authority. Independent reference, not affiliated with CARB.