PTE PW39 External Wastegate $240

The new PTE PW39 is made from high grade, high temperature stainless steel and billet aluminum components. It features Precision's own purpose designed Kevlar reinforced wastegate diaphragm and a 347 stainless investment cast valve body. Precision's investment cast valve body has a smooth internal surface, giving you better flow and more accurate boost control.

Precision's PW39 was designed to be a direct replacement for other existing 44mm wastegate flanges, but will work best with the flange provided.

The PW39 features a Nickel Chromium Alloy valve and 5 different 17-7 precipitation hardened springs. Also included are stainless steel inlet and outlet flanges with clamps.

With a satin black anodized, 6061 aluminum billet wastegate cap you will have years of good looks and protection from the elements. The PW39 is generally compatible with most aftermarket manual and electronic boost controllers on the market today.

Included:
- External wastegate assembly
- Spring: Small inner color Natural: 1.5 psi
- Spring: Medium outer color Yellow: 3 psi
- Spring: Medium outer color Red: 6 psi
- Spring: Large outer color Green: 9 psi
- Spring: Large outer color Blue: 18psi
- Banjo barb fitting assemblies
- Pressure port cap
- Seal washer
- Valve seat
- 304 Stainless steel inlet flange
- 304 Stainless steel outlet flange
- Instruction manual

The use of 2 or 3 springs in combination are required for higher boost levels. When selecting your spring rate, the total boost psi pressure is determined by adding the springs rates together. Use the chart above to determine your spring combination needed for your boost psi. Note: Each spring has a strip of colored paint on one side, except the natural colored small inner spring.

Example: 1.5 psi Natural small spring + 6 psi Red medium spring + 18 psi Blue large spring = 25.5 psi.

WARNING: Installing higher spring rate springs into your PW39 wastegate, may cause higher than expected boost levels. It is recommended to reduce your boost controller back to its minimum setting, and monitor your new minimum boost level with the new spring or springs, before increasing your boost pressure. Failure to do so can lead to severe detonation and engine damage. Any damage incurred, as a result of detonation from excessive high boost levels or improper installation is the customer’s responsibility. Precision Turbo recommends that the air/fuel ratio be checked while setting the boost levels, as raising your boost levels will change your air/fuel ratio of your tune up and could cause engine detonation or damage.

(PW46 assembly pictured below, for reference only)