Donor vehicle 2019 Nissan 370z Mileage 30000 This tensioner assembly is a genuine OEM part for a 2009-2020 Nissan 370Z with a 3.7L engine. It is designed to fit universally and has been manufactured in Japan. The part number is 119551EA0D / 11955-1EA0D. This is a brand new part in mint condition and is not a vintage or performance part. It is an accessory belt idler and tensioner that is essential for the proper functioning of the car's engine.