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The Supertech manganese-bronze exhaust valve guide for Honda D and K series engines fits 5.5mm valve stems and is intended for exhaust-side use. It restores valve-to-guide clearance and alignment during cylinder head maintenance or rebuilding, supporting consistent valve seating and reduced stem wear. Sold individually, this guide is specified where D/K-series exhaust guide dimensions call for a 5.5mm stem.
Supertech Honda D/K Series Manganese Bronze Exhaust Valve Guide 5.5mm Stem
