Marine O2 Sensor Adapter

This unique 1 thick adapter plate provides an installation option for retro fitting a oxygen sensor and or air fuel ratio gauge for tuning purposes into the most common log manifold style exhaust systems.

Marine o2 sensor adapter.

Included with this item. Mercury 3 and 4 riser gasket 700 32080 2 required stainless steel 18mm oxygen sensor plug 620 50031 1 required. O2 oxygen sensor port plug adapters dual threaded adapter 18 to 12mm exhaust pipes bungs for harley flstf fatboy breakout dyna electra glid 4 7 out of 5 stars 16 9 99 9. When installing an o2 sensor in our water cooled manifolds both of these criteria seems to be hard to match.

And with the o2 sandwich plate between manifold and riser the sensor is mounted. It will not fit on round or oval risers without a suitable flat area. Probably so moisture can drip off. Oxygen sensor is sold separately adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust.

This unique 1 thick adapter plate provides an installation option for retro fitting a oxygen sensor and or air fuel ratio gauge for tuning purposes into the most common log manifold style exhaust systems. When going 18 inch away from the nearest exhaust port we are almost out where the water is mixed with exhaust. Designed to accept popular 18mm o2 oxygen sensors. O2 exhaust sensor used on all marine power catalyst engines.

The part is manufactured from aluminum and is not treated with any corrosion resistance. Designed to accept popular 18mm o2 oxygen sensors. Part hm206 brass adaptor designed to install heated oxygen sensor in water cooled marine exhaust risers. The howell engine developments marine oxygen sensor adapter threads into the inner portion of the exhaust manifold exposing the oxygen sensor to the engine exhaust before the cooling water is discharged into the exhaust stream.

Gm part number 12589321. Designed to accept all popular 18mm o2 oxygen sensors. Ac delco part number 213 3533. Description pictured is a custom made adapter plate for marine applications that choose to add a heated three wire or four wire o2 sensor for use when converting an engine from an open loop system to a closed loop system.

The adapter plate bolts to the exhaust manifold riser.