Merchant Automotive 10051 - WIF Plug for GM Duramax
Stronger than the stock plastic sensor
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Will not turn on a check engine light
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Fits your MA WIF Wrench
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Serviceable with your 3/8" drive ratchet
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Comes with a new o-ring
FAQ - Water in Fuel Delete Plug
Why would I want to remove the factory sensor?
Typically, we would not want to remove any factory sensors.
However, we are working with a sensor that has a few short comings.
First is the accuracy of the sensor itself. In its 10 plus years on the
Duramax, it has not shown to be the most reliable at actually detecting
any water in the filter. Second, its made of plastic. Not normally a
big deal but after a few filter changes, it must be removed and
reinstalled every time. It can become distorted or otherwise damaged
from using the incorrect tool for service. Third, the wires on the OE
sensor can become brittle and break from heat and vibration in the
engine compartement, rendering the sensor useless and often unnoticed
until the next service.
Will installing this plug cause any warning lights to come on in my truck?
No.
The factory Water in Fuel sensor only provides information to the
driver, it does not supply any information to the ECM for operation of
the vehicle. When the sensor is removed, the truck side of the plug
would get tied off to the wiring harness and the only way for the light
to come on is for the circuit to close.
Will I void my warranty with this plug installed?
No, installation of this will have no effect on your warranty.
Will this Delete Plug fit my filters?
Our plug is precision machined in house on our HAAS machining
equipment to exact specifications. It was designed to be a direct
replacement for the factory plastic sensor. One thing we have noticed
with the recent advent of the plastic body filters available on the
market is that our plug does not fit some of them. The reason is the
Delete Plug is machined from T6061 aluminum and there is no give in the
threads like the OE plastic sensor has. The plastic body filters
feature sensor threads that are molded into the body, thus they tend to
vary and in a few circumstances, our Plug will not be able to be fully
tightened. The use of the metal body filters such as the
AC Delco TP3012 we offer will ensure a correct fit. 
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