It has 164 teeth. It was bought for a 89 mustang 5.0Okay....what engine was it bought to use with? There are two different imbalances, 28oz & 50oz. Late 5.0's are 50oz, early 302's & 351's are 28oz. Then there are different size flexplates that have different #'s of teeth. Early ones are smaller dia. and 157 teeth. Later ones are larger dia. and 164 teeth.