Product Details Project's 38mm 2 bolt RS-Series Universal Wastegate "- Includes a 5psi & 10 psi wastegate spring (combine both springs for 15 psi) - Dual port = accurate boost - Ultra durable diaphram - Includes all hardware (bolts, gasket etc) - High quality appearance - Quick and simple one step process for removal or installation of a different wastegate spring This wastegate is 4.00" inches tall. 5 psi spring : outer diameter 29mm / length : 36mm ( inside wastegate) 10 psi spring : outer diameter 44mm / length : 68mm ( extra spring ) Example: You can use the 5 psi or 10 psi spring alone or combine them together for a total of 15psi.

Rev9Power 38mm 2 bolt RS-Series Universal Wastegate

- Includes a 5psi & 10 psi wastegate spring (combine both springs for 15 psi)
- Dual port = accurate boost
- Ultra durable diaphram 
- Includes all hardware (bolts, gasket etc)
- High quality appearance
- Quick and simple one step process for removal or installation of a different wastegate spring


This wastegate is 4.00" inches tall.

5 psi spring :  outer diameter  29mm /  length : 36mm ( inside wastegate)
10 psi spring : outer diameter  44mm /  length : 68mm ( extra spring )

Example: You can use the  5 psi or 10 psi spring alone or combine them together for a total of 15psi.