L83 Engines Part Number: 12668390 this supersedes many gm part#'s Please note that there is no functional difference between "low", "nominal", and "high" versions; you just need all eight to match.
WARNING: Per GM, if you remove your fuel rail you must replace the fuel rail crossover tube which is a one time use. If this leaks, results could be deadly and the mechanic/shop could be held liable. Take no chances and replace it with a new one. Add one to your order in the drop down below.
