S4

  • *Actual product shown Attach boost leak tester at the y-pipe inlet as shown.

    Audi S4 2.7T - Boost Leak Tester

    Boost Leak Tester for your 2.7T the easy way! Simply remove the flex hose off the Y-Pipe inlet - Fit the boost leak tester over the Y-pipe, and clamp it down.  The vinyl cap is used to cap the crankcase ventilation flange off the y-pipe to stop the...

    $46.00
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  • Audi S4 2.7T B5 - Billet Aluminum Boost Leak Tester Attach boost leak tester at the y-pipe inlet as shown.

    Audi S4 2.7T B5 - Billet Aluminum Boost Leak Tester

    Boost Leak Tester for your 2.7T the easy way! Simply remove the flex hose off the Y-Pipe inlet - Fit the boost leak tester over the Y-pipe, and clamp it down.  The vinyl cap is used to cap the crankcase ventilation flange off the y-pipe to stop the...

    $69.99 $62.00
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