For BM N55 engine
135i 335i 535i
if youwant to install boost gauge meter
you must need it
let make you installgauge easily
æ
For BM N55engine
135i 335i535i
if you want toinstall boost gauge meter
you must needit
let make you install gaugeeasily
æ
This adaptor palter installs between the boostsensor and mounting surface to allow a tapping to run a vacuum operated valve orfor connection to a boost gauge.
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