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Part:   20-402S

AEM 20-402S Intake Bypass Valve

AEM Intake Bypass Valve
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0
  • Fits 2.75 inch tubes
  • Secures with two included 1/2 inch wide hose clamps
  • Protects engine from water in cold-air intake systems
  • Installs along the upper portion of the inlet pipe

AEM air bypass valves create a vacuum leak to bypass the air filter in the event that the air filter sucks up water. Air bypass valves are typically installed onto the air intake tube on cold-air intake systems.
Specifications AEM 20-402S Product Specifications
Product StyleAEM Intake Bypass Valve
CARB EO NumberD-670-1
Package Contents1 Bypass Valve
Package Quantity1
Weight1 lb (0.5 kg)
Product Box Height3 in (76 mm)
Product Box Length5 in (127 mm)
Product Box Width5 in (127 mm)
Material UsedNylon
WARNING: Cancer and reproductive
Reviews Product Reviews

Peter Boccard from Rock Tavern, New York
June 14, 2016 - Part 20-402S
I have had this product for some time, while I cannot back the product with technical data, I can say that I have not gotten hydrolock.