Dorman - Techoice 419-007 Automatic Belt Tensioner Quality tests on this part include torque testing, spring-back testing, corrosion-resistance testing, and on-vehicle testing Solid construction for long-lasting durability Highly resistant to heat and shock Designed to fit properly every time Original Equipment (OE) Number: 31170P8AA01, 31170P8FA01, 31170PGKA01