Fit for Mikuni HSR Carburetor Pilot Air Adjustment Screw HSR42 HSR45 HSR48 NEW
For MIKUNI HSR48 New Style. for MIKUNI HSR45 New Style. for MIKUNI HSR45 Old Style. for MIKUNI HSR42 New Style. for MIKUNI HSR42 Old Style. Replace when the carburetor is disassembled during overhaul.