TORCO Ford E4OD 4R100 Stock Torque Converter 4 Studs 4.9L 5.0L 5.4L 5.8L 7.3L 7.5L Diameter : 12.75" Mount : 4 Studs Spline : 31 Unlimited Miles 1 Year Warranty Please TEXT with any question 562 644 1534. After purchase, please provide your vehicle info: YEAR, MAKE, MODEL, ENGINE SIZE so that we can confirm correct fit : Please EMAIL US or TEXT to 562 644 1534.