In house R&D and Manufacturing since 2003

Build Now, Pay Later

The offer is valid for all orders within the USA. For other countries, the cost will be automatically calculated on checkout.

Free Shipping Over $199

Call Our Experts: +1 (602) 437-2101

Turbosmart GenV ALV40 Anti-Lag Valve

SKU TS-0552-1402

Turbosmart GenV ALV40 Anti-Lag Valve

This product is in stock and ready to ship!
In stock

Turbosmart GenV ALV40 Anti-Lag Valve

Turbosmart GenV ALV40 Anti-Lag Valve

Rally Racing Anti-Lag is different from tradiitional misfire anti-lag in that it keeps your turbo spooled up while your foot is off this throttle.  Turbosmart's fresh air ALV40 (Anti-Lag Valve) is designed for motorsport applications, featuring a 40mm valve diameter and a purpose designed actuator housing.  The fresh air valve allows for incoming charged fresh air from the turbo to be diverted safely into the exhaust manifold pre-turbine wheel with the throttle at low opening angles.  This allows for safer spooling of the turbocharger without the potentially damaging throttle based late combustion event style anti-lag that can induce high engine stresses and very hard on connecting rods and valves.  The ALV is a sealed twin chamber design with the top port being the primary control port, the spring is designed to open under vacuum conditions to allow for the air to bypass into the exhaust manifold, the lower chamber for twin port control methods, to control the valve irrespective of manifold pressure and shaft seal allows for leak proof operation.  Multiple fittings are also supplied for ease of fitment and fabrication.
ALV40 Includes:
  • Turbosmart Gen-V ALV
  • Valve Seat
  • Inlet V-band Clamp
  • Inlet Hose Adapter 1-1/2" OD
  • Outlet V-Band Clamp
  • Inlet Weld Flange 1-1/2" OD
  • Collar Tool
  • Fitting Kit
  • Inlet O-ring
Due to the variety of engine applications, a weld flange is required to be purchased separately:
  • 5 cylinder: TS-0550-3104 ALV 5-1 Weld Flange (5 outlet)
  • 4 cylinder/V8: TS-0550-3098 ALV 4-1 Weld flange (4 outlet)
  • 3 cylinder/6 cylinder: TS-0550-3099 ALV 3-1 Weld flange (3 outlet)
  • 2 cylinder: TS-0550-3100 ALV 2-1 Weld flange (2 outlet)
  • For custom outlet plenums, use Single Outlet to allow for fabrication of your own solution: TS-0505-3101 ALV 1-1 Weld Flange (1 outlet)
A larger 1-3/4" OD  inlet pipe adapter is also available -TS-0550-3102




warning WARNING – Proposition 65 Compliance Statement:It is the responsibility of Turbosmart to warn its customers and employees that some products sold on this website contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

warning Important Emissions Note:This product does not have a CARB EO #; it is not legal for sale or use in CA on pollution controlled motor vehicles. This is intended as a “Race Only” product to be used solely for competition. It’s use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization; any other use including recreational off-road use, may be a violation of local, state and federal laws. It is the buyer’s responsibility to verify legal use of this product for the intended application and use.







Write A Review


Full-Race Motorsports is the most
trusted name in turbocharging.

Wholesale Inquiries