King SI-Series Main Bearings (Set of 5) Subaru WRX 2002-2014 / STI 2004-2021 EJ20/EJ22/EJ25 (Including Turbo)

Part #: MB5382SI. King SI-Series main bearings are top - notch replacement parts for performance engines with factory crankshafts. They enhance the crankshaft finish, smoothing out tiny ferrite peaks on poorly ground or polished nodular cast iron crankshafts. These bearings offer improved oil clearance, which cuts down on wear, extends engine life, and reduces operating noise, vibration, and excessive oil flow. Note: Ideal for engines with thrust in the #5 position.

Using these King SI - Series main bearings is straightforward. First, make sure your engine is a Subaru WRX from 2002 - 2014 or STI from 2004 - 2021 with an EJ20, EJ22, or EJ25 engine (including turbo). Also, check that your engine has thrust in the #5 position. When installing, be gentle to avoid any damage to the bearings. For maintenance, regularly check the oil level and quality. Good oil will keep the improved oil clearance working as it should, reducing wear and engine noise. If you notice any unusual vibrations or noises, it's a good idea to have the bearings inspected by a professional.