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The Supertech manganese-bronze exhaust valve guide for Honda B and H series engines fits 5.5mm valve stems and is sold individually for exhaust-side installation. It restores proper valve stem clearance and alignment during head rebuilding or repairs, helping to maintain valve runout and seating precision. Use this guide where the B/H series specification calls for a 5.5mm exhaust stem guide.
Supertech Honda B/H Series Manganese Bronze Exhaust Valve Guide 5.5mm Stem - Single
