CARB Executive Order · Catalytic Converter
EO D-35-1
Tungsten Contact Manufacturing Co. · Tungsten Hydro Catalyst-california Design
- Executed
- July 1974
- Rows shown
- —
- PDF pages
- 4
We show basic details only for this EO. Catalytic converter EOs are matched by engine test group; use CARB's catalytic converter lookup or the PDF. 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 "Tungsten Hydro Catalyst-California Design" device is identical in construction and operation to the Hydro-Catlayst Corporation's "Precombus- tion Catalyst-California Design" device.
Quoted from EO D-35-1. 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 readSource: CARB Executive Order D-35-1 (PDF), retrieved November 11, 2026. EOs can be amended, superseded or revoked; CARB's copy is the authority. Independent reference, not affiliated with CARB.