Combination plug and boost port for LS truck engine intakes

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Plug the port for the purge valve- Or use it to plumb a boost gage for turbo applications. This fits all truck LS manifolds with purge solenoids. To use as a block-off just bolt it in using the stock hardware. To use for a boost gage, drill through with 1/8” bit (the part is already drilled within 1/16” of breaking through), and screw in your 1/8” npt sender or adapter. To use this without the stock shoulder bolt and rubber boot, use an m6 bolt and place a washer underneath the part. Show more