TiAL 002421 MV-S / MV-R Series Wastegate Replacement Spring

The TiAL 002421 is a genuine OEM replacement actuator spring designed for use with TiAL Sport MV-S and MV-R series external wastegates. Engineered to deliver precise, consistent boost pressure control in high-performance and motorsport turbocharged applications, this spring is a direct service part sourced from TiAL Sport — the industry leader in turbocharger boost control components.

Key Features:

• Constructed from 17-7 PH stainless steel for exceptional strength and corrosion resistance
• Maintains consistent actuator pressure at elevated temperatures — rated to withstand up to 900°F (483°C) without relaxing or losing spring tension
• Engineered to exacting TiAL Sport tolerances for reliable, repeatable boost pressure control
• Compatible with TiAL MV-S (38mm) and MV-R (44mm) wastegate assemblies built after January 16, 2012
• Springs can be nested and combined to achieve higher target boost pressure levels; resultant pressure equals the sum of individual spring ratings
• Sold individually — select the appropriate spring color/pressure rating for your specific boost target

TiAL Sport wastegate springs are color-coded by pressure rating, allowing builders to mix and match springs to dial in precise boost setpoints. Note that boost pressure ratings are approximations based on intake manifold pressure equaling exhaust manifold pressure; actual results will vary by application. Always consult the TiAL spring pressure chart to confirm the correct spring selection for your MVS or MVR wastegate.