Multiquip 9805655777 Spark Plug (NKG)

The Multiquip 9805655777 is a genuine OEM Spark Plug (NKG) designed for a wide range of Multiquip equipment including MTX50HD, MTX60HD, MTX70HD, MTX70HDR, MTX80HDR, MTX60HF, MTX70HF, MTR40HF rammers, the MVC40H plate compactor, QP15HP centrifugal pump, and BPX backpack vibrator. As a direct OEM replacement, this plug is sourced to the same specification as the original component installed at the factory. Keeping an exact-match spark plug on hand means faster turnaround between service intervals and confidence that ignition performance is restored to spec.

Key Features

• OEM-Grade Electrode Specification — Manufactured to the same heat range, thread pitch, and gap tolerance as the original NKG plug, ensuring correct ignition timing across all compatible engines.
• Drop-In Thread Compatibility — Threads directly into the cylinder head with no chasing or adapter required, fitting the Honda GX100, GX120, and other engines found across the compatible model range.
• Broad Model Coverage — A single plug services MTX rammers, MTR40HF trench rammer, MVC40H plate compactor, QP15HP centrifugal pump, and BPX vibrators, making it a smart stocking part for mixed fleets.
• Consistent Combustion Efficiency — A correctly gapped, clean-burning plug maintains full engine power output; a worn or fouled plug causes hard starts, misfires, and loss of compaction or vibration force.
• Fuel System Safety — Proper spark plug seating and torque prevents combustion blow-by, protecting the engine from unburned fuel contamination and reducing risk of fuel-related hazards.

A spark plug is the ignition source for a gasoline engine, generating the electrical arc that ignites the air-fuel mixture inside the combustion chamber with each power stroke. When a spark plug wears out, its electrode gap widens, the insulator tip fouls with carbon deposits, or the tip erodes — all of which result in a weak or inconsistent spark. On compact equipment like rammers, plate compactors, and pumps, this translates directly to hard starting, rough running, reduced output force, and increased fuel consumption. Replacing the plug on schedule with the correct NKG specification part restores clean combustion and full engine performance.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.