TiAL 002940 F38 38mm External Wastegate 2-Bolt Flange

The TiAL F38 is the classic 2-bolt flange external wastegate, first introduced by TiAL in 2001 and still a benchmark in boosted performance applications. Featuring a 38mm valve — shared with the MV-S — the F38 rides in a taller body and utilizes a classic 2-bolt flanged design for both inlet and outlet, replacing the legacy F35 model. Spring base pressures range from 3.626 to 23.206 PSI (0.25 to 1.6 BAR), with higher pressures achievable by combining two springs.

Key Features:

• High-temp NiCrFe alloy valve with wear-resistant coating and 347 Stainless Steel valve housing for extended service life — including compatibility with leaded racing fuel
• Nitronic 60 Stainless Steel valve seat and valve bushing for superior corrosion, wear, and galling resistance
• 17-7 PH Stainless Steel actuator spring maintains consistent boost pressure at high temperatures, resisting spring relaxation up to 900°F (483°C)
• High-temperature silicone Nomex-reinforced actuator diaphragm
• CNC-machined 6061-T651 billet aluminum actuator housing, color anodized (Silver, Black, Red, Blue, or Purple)
• All Stainless Steel hardware included
• Mating weld flanges available in 304L Stainless Steel or 1018 Steel (sold separately)
• Inlet and Outlet flange pipe size: 1.50" OD
• Air port thread size: M10 x 1.0
• Made in the USA

What's Included:

• (1) F38 Wastegate Assembly
• (1) F38 Valve Seat
• (2) TiAL Air Fittings
• (2) Mounting Bolts

The TiAL F38 is designed to optimize the actuator-to-valve area ratio for maximum boost control and wide dynamic flow capacity, making it an ideal choice for street performance and all-out racing builds alike. Note: Weld flanges are not included and must be purchased separately.