4042147: SEAL;VLV STEM,EXHST

**Product Description: Exhaust Valve Stem Seal (Part Number: 4042147)** **Product Specifications:** - **Part Name:** Exhaust Valve Stem Seal - **Part Number:** 4042147 - **Application:** Exhaust valves **Function and Design:** - Plays a critical role in engine lubrication and performance. - Allows controlled oil lubrication for the valve stem while preventing excessive oil from entering the combustion chamber. **Key Features:** - **Positive Seal Design:** Provides precise control over oil flow. - **Heat Resistant Material:** Made from high-temperature resistant materials like FKM, capable of withstanding temperatures up to 450°F. - **Specific to Exhaust Valves:** Engineered for exhaust valve applications that require higher heat resistance compared to intake valve seals. **Installation:** - An installation tool may be required to protect the inner lip of the seal during fitment over the valve stem lock grooves. - Proper installation is essential for optimal sealing and to prevent premature wear or failure. **Importance:** - Using the correct valve stem seals is vital for maintaining engine function. - Helps prevent oil consumption, reduces emissions, and protects against carbon buildup and valve seat damage. - Contributes to overall engine efficiency and longevity. This exhaust valve stem seal is specifically designed for optimal performance in high-temperature conditions, ensuring effective oil control and enhancing engine durability.