This is a replacement O-ring gasket for your LSJ intake manifold end plate. This is the O-ring that goes around the laminova cores and seals between the manifold and the end plate. 

The stock gasket is discontinued and they may grow or crack over time. This O-ring is a quick install that should be done when servicing the laminova cores or switching to a dual pass end plate. 

You may find that a small dab of RTV helps the gasket stay in place when installing. 

Fits: 

• 2004-2007 Saturn Ion Redline
• 2005-2007 Chevrolet Cobalt SS