Genuine Spark Plug 98079-55846 for Honda Engines Generators Lawn Mower Replaces NGK BPR5ES OEM (Pack of 2)

What It Is

This is a genuine Honda spark plug (part #98079-55846) designed for small engines in Honda lawn mowers, generators, and pressure washers. It’s a direct replacement for the widely used NGK BPR5ES plug, packed in a set of two for convenience or spare storage.

Fitment & Compatibility

Before buying, check your engine’s model number (e.g., GCV160, GXV120, GX200) and confirm it uses a 14mm thread, 19mm reach, and 0.8mm gap. This plug fits most Honda OHV engines on walk-behind mowers (like HRX, HRR series) and many generators. Cross-reference with NGK BPR5ES, BPR6ES, or Champion RC12YC. Avoid assuming fitment based on mower brand alone—verify the plug’s thread length and seat type (gasket vs. tapered). Not for 2-stroke engines or large V-twins.

Key Things to Know

• Gap check: Despite being pre-gapped, always verify 0.8mm gap with a feeler gauge before installing—shipping can shift it.
• Installation: Hand-tighten only, then use a torque wrench to 18-20 ft-lbs to avoid stripping aluminum threads. No anti-seize needed on new plugs.
• Replacement interval: Honda recommends every 100 hours or annually; if the plug is oily or worn, replace sooner.
• Genuine vs. aftermarket: This Honda part is identical to NGK BPR5ES but often costs less per plug in this pack. Avoid counterfeit “Honda” plugs sold loose without packaging.

Should You Buy It

Yes—if you own a Honda small engine mower or generator and want a reliable, OEM-spec plug at a fair price. The two-pack gives you a spare, and the 5.0-star rating reflects consistent performance and easy installation for DIYers. Not needed if you already have a fresh NGK BPR5ES.