Spark Plug
NGK ZFR5F
1 associated model record
Identity: Unclassified
The NGK ZFR5F is listed as a part-number spark plug in 1 model record across 1 brand. Those records reference OEM part number 98079-5587G. Associated equipment records include Honda GX630. These records do not yet include assigned confidence, source type, and review dates; do not treat the association as confirmed fitment.
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Model Records
| Brand | Model | OEM # | Confidence | Source | Reviewed | Evidence | |
|---|---|---|---|---|---|---|---|
| Honda | GX630 | 98079-5587G | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | 0.7-0.8mm gap | Small Engine |
What this part is
NGK ZFR5F is listed here as a part-number spark plug option. Identity describes the named part, not automatic compatibility with every model record. Confirm the removed part, model plate, and seller listing details before buying.
Recorded identity categories
- Unclassified: 1 model record
OEM, OEM-specified, aftermarket, and cross-reference identities are reported separately. Unclassified records are not promoted to confirmed fitment.
Recorded OEM references
98079-5587G
Alternate spellings
ZFR5F is the normalized part number used on this site.
Known exclusions
- No specific exclusion is listed in the current data. Still verify serial range, production variant, and removed-part details before ordering.
Dimensions and specs
- 0.7-0.8mm gap
Symptoms that suggest replacement
- Won't start
- Hard hot restart
- Rough idle
- Fuel-fouled or carbon-heavy plug
How to verify before buying
- Treat the model rows above as research leads, not confirmed fits, unless the individual relationship includes adequate review evidence.
- Match the OEM number, stamped part number, or physical spec against the removed part.
- Read the model-specific evidence, confidence, source, reviewed date, dimensions, notes, and exclusions before opening an Amazon listing.
Common wrong-fit mistakes
- Ordering from a broad model-family listing without checking the exact equipment model.
- Ignoring the old OEM number, stamped part number, or physical dimensions.
- Matching the plug number but missing the required gap, terminal style, or thread reach.
Related model and part pages
Amazon buying cautions
- Check that the Amazon listing includes the exact part number or verified cross-reference shown here.
- Compare kit contents, gaskets, fuel lines, bulbs, plugs, filters, and dimensions against the removed part before checkout.
- A listing title can mention the right model and still include the wrong revision, accessory, or generic substitute.