1Fitment: Distributor cap rotor tune up kit is suitable for Mercruiser 5.0, 5.7, 7.4, 8.2 5.0L 5.7L 7.4L 8.2L V8 Engines, direct replacement, perfectly fit your engine. 2OE Numbers: 815407Q5, 815407A2 are the reference part numbers. Please double check the part number of your item to ensure perfect fit. 3Improved Fuel Efficiency: By optimizing the ignition system, the kit helps your engine burn fuel more efficiently, resulting in improved fuel efficiency. 4Durable Materials: Made of high strength ABS materials that resist high temperature and wear, with excellent durability and stability, can work in high performance environments. 5High Reliability: The manufacturing conforms to the standard specification, strictly follows the factory quality control, can be used for a long time. Item Type: Distributor Cap Rotor Kit Material: ABS OE: 815407Q5, 815407A2 Fitment: Fit for Mercruiser 5.0, 5.7, 7.4, 8.2 5.0L 5.7L 7.4L 8.2L V8 Engines 1 x Distributor Cap Rotor Kit (8pcs)