Features 1. FITMENT: Works for Detroit Diesel DD15 & DD16 Engines. (Alternative to OEM W470589021400) 2. GREAT PERFORMANCE: Used with J-47386 Piston Ring Compressor Installer to compress the rings and allow the piston to be inserted into the cylinder bore preventing damage and allowing efficiency. 3. EASY TO USE: Simply lubricate the inside of the cylinder liner with clean engine oil，position the carbon scraper tool into the recessed area of the cylinder liner. 4. SUPERIOR MATERIAL: Crafted from high standard forged Steel with black finish for great durability and strength, resistance to corrosion, providing a long-term service. .
