E4OD, 4R100 Overdrive Sure Lock Spiral Lock Snap Ring 1989-up
First and second design Ford E4OD, 4R100 retaining rings are known to pop out of the retaining ring groove, causing initial failure or costly comebacks. Sonnax Sure Lock spiral snap ring 36744-01 features a unique design that mechanically locks tabs into place, preventing it from being worked out of the retaining ring groove.