4.0T

Turbo Boost Leak Tester Kit 2013+ 4.0T **Audi A8 S8 w/ 3" SRM Inlets Only** Billet Alum Test up to 30 PSI - Includes PCV & BPV caps and new SRM inlet O-rings

For A8/S8 4.0T running the 3" SRM Inlets - Includes New inlet O-rings Get your boost back and get Full Performance From Your Turbo!  This boost leak tester kit is designed to fit over the two inlet pipes of your turbo charger and allows you to...

Turbo Boost Leak Tester Kit 2013+ 4.0T for the 2.5" SRM Inlets - Billet Alum Test upto 30 PSI - Includes PCV & BPV caps and new SRM inlet O-rings

For any 4.0T running the 2.5" SRM Inlets - Includes New inlet O-rings Get your boost back and get Full Performance From Your Turbo!  This boost leak tester kit is designed to fit over the two inlet pipes of your turbo charger and allows you to...

Turbo Boost Leak Tester Kit 2013+ Audi RS6 RS7 S8 4.0T - Billet Alum Test upto 30 PSI - Includes PCV & BPV caps

Get your boost back and get Full Performance From Your Turbo!  This boost leak tester kit is designed to fit over the two inlet pipes of your turbo charger and allows you to pressurize the whole charge system with compressed air while the...

Turbo Boost Leak Tester Kit 2013+ Audi S6 S7 A8 - 4.0T - Billet Alum Test upto 30 PSI - Includes PCV & BPV caps

Get your boost back and get Full Performance From Your Turbo!  This boost leak tester kit is designed to fit over the two inlet pipes of your turbo charger and allows you to pressurize the whole charge system with compressed air while the...