On a 2018 Honda Pilot with the 3.5-liter V6, a spark plug replacement typically costs about $200 to $500 in total. If you do the job yourself, you’ll mostly pay for six plugs and any basic tools, while a shop or dealer will charge for labor plus parts. The exact price depends on plug type, labor rates, and whether ignition coils or wires are replaced during the service.
What affects the price
The following breakdown helps explain how the final bill is determined. It compares three common service paths: DIY, independent shop, and dealership work.
- Do-it-yourself (DIY): parts cost for six iridium/platinum plugs is typically around $30–$120. You’ll save on labor, but you may incur costs for special tools or adapters if you don’t already own them.
- Independent shop: parts + labor. Expect roughly 1.5–2.5 hours of labor at about $80–$150 per hour, plus $30–$120 for six plugs depending on brand. Overall, many customers see a total in the $200–$450 range.
- Dealership: parts + labor at higher shop rates. Total commonly falls in the $350–$700 range, influenced by local labor costs, OEM parts pricing, and whether any ignition coils or related components are replaced during the service.
Bottom line: for a typical six-plug replacement on a 2018 Pilot, expect a target range around $200–$500, with lower costs DIY and higher costs at a dealer, especially in expensive regions.
What to expect during service
Tl technicians will typically de-energize and remove the ignition coils, extract the old plugs, install new plugs to the manufacturer-specified torque, and reseat the coils. If any ignition coils or wires show wear or misfire symptoms, those components may be replaced in the same visit, which can raise the total price and extend the job time.
Factors that influence final cost
Several variables can shift the final price up or down. Consider these when budgeting for spark plug replacement.
- Plug type and quality: OEM iridium/platinum plugs last longer but cost more than copper or generic plugs.
- Labor rate: regional differences and whether you use a dealer or independent shop affect the hourly charge.
- Engine accessibility: the 3.5L V6 is usually serviceable, but tight spaces or stubborn plugs can add time and cost.
- Coil/wiring condition: if coils or ignition wires need replacement, expect higher labor and parts costs.
- Additional diagnostics: if the technician finds related issues (misfires, poor compression, etc.), they may perform extra tests that increase the bill.
In practice, planning for a total in the general range of $200–$500 covers most scenarios, with variations based on your locale and the chosen service path.
Summary
The cost to replace spark plugs on a 2018 Honda Pilot typically falls between $200 and $500. DIY parts-only costs are at the lower end, while dealer services can push toward or beyond the higher end, especially if ignition coils or other components need attention. Always verify a written estimate that separates parts and labor, and confirm the recommended plug type from Honda for your specific vehicle configuration. Regular maintenance and timely replacement help preserve engine performance and fuel efficiency.