If you have ever taken a peak underneath your 944/951 intake manifold you will likely notice a maze of vacuum lines.
The factory 944 lines in time fail due to heat exposure. Fixing all vacuum leaks can drastically change the performance of your vehicle.
Replace your old stock OEM hose with these silicone hoses which are resistant to coolant solutions, cold leaks, cracking, peeling, aging and ozone.
The 944/951 use three sizes for vacuum (3mm, 6mm and 8mm inside diameter)
Make sure to purchase both all three types if planning on upgrading all vacuum lines in your 944!