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The Supertech manganese-bronze intake valve guide for Honda B and H series engines fits 5.5mm valve stems and is intended for intake position installation. It restores correct stem clearance and alignment following head repairs, which supports consistent valve movement and seating. Supplied individually, this guide matches B/H series intake requirements that use the 5.5mm stem size.
Supertech Honda B/H Series Manganese Bronze Intake Valve Guide 5.5mm Stem
