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The S&S CYCLE hydraulic tappet assembly (Part #330-0288) is designed for optimal performance in Harley-Davidson XL models from 1991 to 1999. Crafted with precision components, this tappet assembly ensures reliable valve operation and enhances engine durability. The assembly features a precision-hardened ball-type check valve that provides superior sealing and lash control, helping to maintain proper valve clearance and reduce engine noise. Its self-cleaning valve seal minimizes issues caused by oil contamination, promoting smoother and quieter engine operation. The lifter body and roller are heat-treated to improve strength and wear resistance, extending the lifespan of the component under demanding conditions. The plunger is meticulously ground and select-fitted within a tolerance of a few millionths of an inch, ensuring quiet and efficient operation. Made in the USA, this assembly guarantees high-quality standards and reliable performance for Harley-Davidson enthusiasts seeking to restore or upgrade their engine’s valve train system.
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