Honda 98079-56846 (BPR6ES) Small Engine Spark Plug for GCV160, GCV190

What It Is

The Honda 98079-56846 (BPR6ES) is a resistor-type spark plug designed for small engines, specifically the Honda GCV160 and GCV190 series used in walk-behind mowers, pressure washers, and generators.

Fitment & Compatibility

• Direct fit for: Honda GCV160, GCV190, and many other Honda GX and GC series engines (e.g., GX120, GX160, GX200).
• What to check: Match your engine’s model number (stamped on the blower housing) to this plug’s specs: 14mm thread, 19mm reach, 0.8mm gap (pre-gapped, but verify). Do not rely on deck size – only engine model matters.
• OEM vs aftermarket: This is OEM Honda, equivalent to NGK BPR6ES. Aftermarket plugs (Champion, Autolite) may differ in heat range or resistor type – stick with this or NGK for reliable performance.
• Cross-reference: NGK BPR6ES, Champion RC12YC (check gap).

Key Things to Know

• Quality: Pre-gapped at 0.8mm, but always check with a feeler gauge – shipping can shift the gap.
• Installation: Easy – remove wire, unscrew old plug, hand-thread new one, then torque to 15-20 ft-lbs (or 1/4 turn after snug). Overtightening cracks the ceramic.
• Common gotchas: Use a spark plug socket (5/8" or 16mm). Don’t use anti-seize on the threads – Honda engines have a zinc coating that can react with it.
• Life: Replace every 100 hours or once a season for best starts and fuel efficiency.

Should You Buy It

Yes, if you own a Honda GCV160 or GCV190 mower and want a trouble-free, long-lasting plug that ensures easy starting and smooth idle. It’s the exact OEM part, so no guesswork. Skip if you need a plug for a different engine family (e.g., Briggs & Stratton) – check your model first.