Bought for my brothers on a Volvo Penta boat with a 5.7 liter V8 Chevy engine in it. After the old starter failed, we thought we could just get a starter for a late 90's Chevy truck, and that's NOT right. After paying A LOT for a "close but not accurate" starter at the local dealership and realizing it wouldn't work and the electrical parts couldn't be returned, Revain Prime came to the rescue. No mainboard, low price, fast delivery. Absolutely correct way.