JE Pistons and Rings 99.5 Bore 8.5:1 Comp Subaru WRX / STI EJ257 Block W/ EJ20 Head 2004-2021

Part #: 291059. JE Pistons and Rings for SUBARU EJ257 BLOCK WITH EJ20 HEAD. The new high - strength FSR forging design makes these pistons both strong and lightweight. After extensive on - track testing, they ensure flawless performance in the most demanding situations for your Subaru WRX. Features include 2618 T6 high - tensile forged aluminum, specifically engineered for high - horsepower Subaru engines. The dome and dishes have smooth - flowing radii for great flame travel. With 1.2 x 1.2 x 2.5mm ring widths and a.905 x 2.500 straight - wall carbon steel wrist pin provided. Pin fitting, Tru Arc locks, and JE Pro Seal Rings are all included. Comes with 4 pistons and 4 rings.

Using these JE Pistons and Rings in your Subaru WRX or STI is straightforward. First, make sure your engine is clean and ready for installation. Follow the standard engine assembly procedures to fit the pistons and rings properly. When it comes to maintenance, regularly check the engine oil for any signs of metal shavings, which could indicate wear on the pistons or rings. Also, keep an eye on the engine's performance. If you notice any unusual noises or a drop in power, it might be time to inspect the pistons. As for cleaning, use appropriate engine - safe cleaning agents during regular engine servicing. Remember to handle the pistons and rings with care to avoid any damage, and always follow the manufacturer's guidelines for installation and maintenance.