A full set of four spark plugs for a 2004 Honda Civic typically costs between about $8 and $100, depending on the plug type (copper-core, platinum, or iridium) and the brand. If you hire a shop to install them, expect additional labor costs on top of the parts.
For the 2004 Civic, which uses a 1.7-liter engine, you have options ranging from affordable copper plugs to longer-lasting platinum or iridium varieties. Prices vary by retailer, whether you buy individual plugs or a multi-pack, and any current promotions. Always confirm the exact specification (gap and heat range) for your engine in the owner's manual or with a parts professional before purchasing.
Plug types and price ranges
Prices differ by the type of spark plug you choose. Since the Civic requires four plugs, multiply the per-plug price by four to estimate the full set cost.
- Copper-core plugs: typically about $2 to $4 each.
- Platinum plugs: typically about $6 to $12 each.
- Iridium plugs: typically about $12 to $25 each.
In total, a complete four-plug set is roughly $8–$16 for copper, $24–$48 for platinum, or $48–$100 for iridium. Some brands or performance lines may be higher.
Factors that influence price
Brand, retailer, and stock levels all affect price. Copper plugs are the cheapest but wear faster; platinum and iridium plugs last longer and can be more cost-effective over time for high-mileage drivers. Multi-pack discounts or promotions can also lower the per-plug price.
DIY vs professional installation
Replacing the plugs yourself saves on labor. The job on a 2004 Civic is typically straightforward for hobbyists with basic tools. If you opt for a shop, expect labor to add roughly $60–$120 or more, depending on local rates and whether ignition components (wires or coils) are replaced or inspected during the service.
Where to buy
Common retailers carry spark plugs, with price and availability varying by region. Buying in a set can reduce per-plug cost, and some brands include little extras like gapping tools or anti-seize compounds.
- AutoZone
- Advance Auto Parts
- O'Reilly Auto Parts
- Walmart or online retailers such as Amazon
Prices differ by retailer and location, so it’s worth comparing several sources and looking for promotions or loyalty discounts. Ensure you select the exact specification for your engine (gap, heat range) as listed in the manual or by a parts associate.
Summary
For a 2004 Honda Civic, expect to pay about $8–$16 for a copper-plug set, $24–$48 for a platinum-plug set, or $48–$100 for an iridium-plug set, with additional labor costs if you have a shop perform the replacement. Always verify the recommended plug type and specifications for your specific engine and driving needs, and consider whether replacing related ignition components at the same time makes sense.