2017 Honda Civic Spark Plug Specs
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
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Quick reference
| Engine | OEM Plug P/N | Aftermarket | Gap (in/mm) | Torque (lb-ft / Nm) | Interval |
|---|---|---|---|---|---|
| 1.5L Turbo | 12290-59B-003 | NGK DILKAR8P8SY, Denso DXE24HR-G11 | 0.031 in / 0.8 mm | 16 lb-ft / 22 Nm | 100,000 miles |
| 2.0L NA | 12290-R1A-H01 | NGK DILFR8B8, Denso DXE22HR-G11 | 0.044 in / 1.1 mm | 16 lb-ft / 22 Nm | 100,000 miles |
Why the right plug matters
Modern engines are finely-tuned machines, and the spark plug is a critical component for proper combustion. The correct spark plug has the right "heat range" to keep the electrode at the optimal temperature. Too "hot" a plug can lead to pre-ignition, while a "cold" plug can become fouled with deposits. The electrode material is also important. Iridium and platinum are long-life materials used in OEM plugs, and they can last for 100,000 miles. Copper plugs are cheaper, but they have a much shorter lifespan, typically 30,000 miles. For the 2017 Honda Civic, the OEM plugs are iridium, and we recommend sticking with them.
How to gap a spark plug
Most modern spark plugs come pre-gapped, but it's always a good idea to check the gap before installation. You'll need a feeler gauge or a wire-type gap tool. Gently slide the appropriate gauge between the center and ground electrodes. If it's too tight or too loose, you can lightly bend the ground electrode to adjust the gap. Never touch the center electrode, as it can be easily damaged.
Replacement procedure tips
Both the 1.5L and 2.0L engines in the 2017 Civic use a coil-on-plug ignition system. This means each spark plug has its own ignition coil mounted directly on top of it. To replace the plugs, you'll first need to remove the engine cover, then disconnect the electrical connector from each coil and remove the single bolt holding it in place. Gently twist and pull the coil straight up to remove it.
There's some debate in the mechanic community about whether to use anti-seize on spark plug threads. The concern is that it can act as a lubricant and cause you to over-torque the plugs. NGK, the OEM supplier for many Honda plugs, recommends against using anti-seize on their plugs with a special metal plating. If you do choose to use anti-seize, reduce the torque spec by about 20%. A small amount of dielectric grease on the inside of the spark plug boot (where it contacts the porcelain) can make future removal easier and prevent misfires.
Known issues
The 2017 Honda Civic is not known for any major spark plug-related issues like the infamous Ford 3-valve Triton engine's two-piece spark plugs that would break off in the cylinder head. The Civic's design is straightforward and robust.
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More specs for the 2017 Honda Civic
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2017 Honda Civic Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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