90913-03021 Seal Or Ring, O(For Valve Stem Oil), Toyota

Product Description The Seal or Ring, O (For Valve Stem Oil) with part number 90913-03021 is an O-ring used in Toyota vehicles to seal the valve stem area and prevent oil from leaking into the combustion chamber. Key Functions: Preventing Oil Leaks: The primary function of this O-ring is to create a seal around the valve stem, preventing engine oil from leaking into the combustion chamber, which can result in oil burning, exhaust smoke, and reduced engine efficiency. Controlling Oil Consumption: It ensures that oil is only used for lubricating the valve components and does not mix with the air-fuel mixture in the combustion chamber. Maintaining Engine Efficiency: This O-ring helps keep the engine running cleanly, preserving proper oil levels and reducing issues such as oil consumption and poor exhaust emissions. Replacing worn or damaged valve stem oil seals, like the 90913-03021, is essential to maintain engine performance and avoid problems such as increased oil consumption, engine misfires, or excessive smoke from the exhaust. Show more.. Additional Information Product Condition New Product SKU 90913-03021 Country of Manufactured Japan Packing Height (in inches) 12.00 Packing Width (in inches) 12.00 Packing Weight (in pounds) 0.40 Show less..