Description
Honda Spark Plug NGK ZFR6K-11E (31916-ZX2-003)
Restore dependable starts and smooth running with the OEM-specified NGK ZFR6K-11E spark plug for select Honda Marine engines. This resistor-type plug is factory gapped at 1.1 mm (verify to your model’s spec) and is designed to deliver consistent ignition performance and reduced fouling in marine environments.
Applications
- For Honda Marine outboards that specify NGK ZFR6K-11E / Honda 31916-ZX2-003
- Routine tune-ups, spring commissioning, and misfire diagnostics
- Direct OEM-grade replacement to maintain factory performance
Shipping & Returns
Ships in protective packaging. For timelines and eligibility, see our Shipping & Returns policy. Contact us prior to purchase for local pickup or rush handling options.
Key Facts
- Brand: Honda Marine / NGK
- Plug Code: NGK ZFR6K-11E
- Honda Part #: 31916-ZX2-003
- Type: Resistor, standard construction
- Gap: 1.1 mm factory set (confirm to your service manual)
- Use Case: OEM-grade replacement for specified Honda outboards
- Category: Ignition & Tune-Up
What’s Included
- Quantity: 1 × NGK ZFR6K-11E spark plug
- Packaging: Retail box labeled 31916-ZX2-003
Service Notes
Confirm the exact plug code and gap for your engine model before installation. Inspect and adjust gap with a wire-type gauge if needed. Apply anti-seize only if specified by your service manual and torque on a cool engine. Replace plugs at the recommended interval for best performance.

