Bunky Posted February 20, 2009 Report Share Posted February 20, 2009 08 SGT-C muffler Ford parts counter says 4R3Z5230 LM, & RM, Ins claims adjuster says 7R3Z5230 F, & G ! Anyone know the difference? Link to comment Share on other sites More sharing options...
ShelbyII Posted February 20, 2009 Report Share Posted February 20, 2009 Both might be wrong. If they looked these up using the VIN number, they may be standard Mustang GT mufflers. The Shelby GT has the Ford Racing M-5230-GTA mufflers installed. Link to comment Share on other sites More sharing options...
ingram4868 Posted February 20, 2009 Report Share Posted February 20, 2009 Both might be wrong. If they looked these up using the VIN number, they may be standard Mustang GT mufflers. The Shelby GT has the Ford Racing M-5230-GTA mufflers installed. If I remember right the M-5230-GTA mufflers were installed at Shelby not Ford. So unless their parts reference material is specific to the SGT they may be looking at the GT mufflers. I have a 2007 Helms shop manual but it does not give a specific part number for the SGT mufflers. I suspect they don't because Shelby was using the FRPP parts. Link to comment Share on other sites More sharing options...
shelbytexan Posted February 20, 2009 Report Share Posted February 20, 2009 Call Bud at Shelby and he should be able to give you the correct part number as they did install it. Link to comment Share on other sites More sharing options...
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