The Scion iM Valve Stem Seal prevents the engine oil from entering the combustion chamber through the valve stem and allows the stem to move without any obstruction. The Valve Stem Seal, made from a durable rubber-based material, fits snugly around each stem so that low friction closure is achieved. It maintains compression, horsepower, and keeps the spark plug clean. Thanks to that little part, every model of the Scion iM, the 3-door and 5-door hatchback now has steady power, lower oil usage, and less smoky start-ups. Unlike the parts that underwent constant redesign, this particular Valve Stem Seal never changed throughout the production run, which shows how reliable it is after city driving and highway driving. Its heat-resistant compound prevents brittleness, so rather than topping off quarts like other glue-on chassis owners, you'll spend more time enjoying the Scion iM chassis. The Valve Stem Seal shields the catalytic converter from excessive grease, thus helping the engine meet emission standards and save the environment and money. With a precise factory fit, the engine does not waste energy burning stray oil, which enhances efficiency. Clean plugs and stable compression also improve safety because they reduce the chance of a misfire when a quick lane change takes place. Because compatibility covers the entire Scion iM line, a driver replacing a worn seal can install a new Valve Stem Seal to factory specs with confidence. Furthermore, the Valve Stem Seal strikes a unique balance between flexibility and firmness that provides a tight seal at cold start but still glides efficiently once the 1.8 liter engine is warmed up. As suspension or rocker arms age, this inexpensive item still does its job, which reiterates why Scion owners rank the iM powertrain as one of the reliable, thanks to the Valve Stem Seal. Every owner of the Scion iM can rely on it for miles and miles.
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