Join Date: Jun 2010
Location: Arvada, Colorado
Spark plug Star Case-must use MOPAR OEM Chanpions, drivability problems
MOPAR CUST SERVICE RESPONSE: Star Case S1218000003 (according to dealer) requires spark plug replacement to be OEM Champiom ($4.85) RE14MCC4--NOT after market RE14MCC4 found at local autoparts store. Installation of aftermarket will cause driveability problems. Case in point, my local shop installed the after market plugs (08 Hemi) at 39,400 miles and started to have stalling problems.
I went to dealer and they removed my new plugs and installed the OEMs ($220.00) and replaced the coils under my extended warranty. The OEM plugs are identical except for a different colored terminal. They also claimed the OEM plugs to be gaped at 0.040", not 0.045"
This was the most expensive "tune up" I have ever encountered and have a hard time believing there is any difference in the OEM vs after market Champion. I think the driveability issue came from the coil replacement and not the plugs. I will call MOPAR customer service 1-800-992-1997 for an explanation.
"non-OEM plugs (same part number) will cause the coils to fail and the engine to have drivability problems (stalling)" I suggested that they should change their p/n to reflect a different spec but I have not had a response from them. Since they have admitted there is a spec difference for the same p/n they might be liable in the event of an accident due to an engine malfunction with installation of owner installed aftermarket Champion plugs with the same 570-RE14MCC4 plugs.
Last edited by BackCountryBob; 06-13-2012 at 12:31 PM.