Company23 Piston Ring Compressor - Subaru EJ25 Motors

Part #: COP - 516. This piston ring compressor features a gradual billet taper design. It precisely guides the piston into the bore without causing any damage to the piston or rings. With an adjustable diameter, this single tool can work on all stock and over - sized pistons/bores of the Subaru EJ25 engine. The convenient tool - less thumb adjuster makes diameter adjustments a breeze. CNC machined from tempered and anodized aerospace - grade alloy, it offers high durability. It fits engine bores from 96.52mm - 100.33mm (3.80' - 3.95') and is perfect for EJ25 engines, fitting most stock and over - sized pistons/bores. Size: 96.52mm - 100.33mm.

Using this piston ring compressor is easy. First, make sure the engine is turned off and cooled down. Then, adjust the diameter of the compressor using the tool - less thumb adjuster to fit your piston size. The range from 96.52mm to 100.33mm should cover most stock and over - sized pistons in EJ25 engines. Place the compressor around the piston rings and gently guide the piston into the bore. The gradual billet taper design will help you do this smoothly without harming the piston or rings. When you're done using it, clean the compressor with a dry cloth. Keep it in a dry place to prevent rust. If you notice any signs of wear, have it checked by a professional.