, 8252-250amp replacement for Ford High Quality Alternator OE Replacement / Upgraded to 250 Amp Ford Mustang GT / This is 6G Series Large case With 6- Groove pulley , CW / Fits for: 2004 to 1999 Models Ford Mustang 4.6 ( SOHC) Replaces : XR3U- 10300- AA, XR3Z- 10346 – AA IF YOU HAVE ANY QUESTIONS TO REGARDS TO THE ITEM FITMENT , PLEASE DON’T HESITATE TO EMAIL US . IT’S VERY IMPORTANT TO RUN 4 GAUGE TO ALLOW MAXIMUM CURRENT FLOW TO YOUR BATTERY