S&B Filters MAP Sensor Spacer Kit for the Duramax LP5 Review and Install. A gotta have for your LP5.

[@go5582]

hi handsome, this maf maintenance procedures should be done every 5k miles. great job

[@05greendmax]

Where does the o ring go

[@GOATbro_Australia]

It sits between the sensor and the sensor port on the exhaust manifold to ensure the sensor is sealed. Hope that helps. Sorry for not showing that more clearly.