The stock rubber intake tube is known to crack because of the high heat in the engine bay and cause vacuum leaks.  This HD high quality reinforced silicone throttle body intake tube will last a lifetime.  The inlet side of the tube matches the standard mass air flow diameter (3").  This is common on turbo set ups and 24v swaps.
 
Available in one or two ports.  One port is popular with ASC delete cars, and two port is a direct replacement for OBD2 cars.  Two ports come with an anodized aluminum plug.
 
Fitment:
M50, M52, S50, S52