Turbosmart Gen V ALV40 Anti-Lag Valve - 40mm, 5 PSI, Black

The Turbosmart Gen V ALV40 is a 40mm fresh-air anti-lag bypass valve for motorsport applications. It uses a purpose-designed actuator housing with twin-chamber control to manage anti-lag airflow, and ships with multiple fittings for easier fabrication and fitment. Black cap. (Note: this is an anti-lag valve, not a boost-control wastegate.)

Specifications

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy