If you own a 2005 Honda CR-V and your engine is misfiring, idling rough, or burning more gas than usual, the spark plugs might be the problem. But just buying any spark plug off the shelf won't fix it. You need the right part and the correct gap setting for your specific engine. Knowing where to buy 2005 CR-V spark plugs with correct gap saves you money, prevents engine damage, and gets your SUV running smooth again without a mechanic visit.

What spark plugs fit a 2005 Honda CR-V, and what gap do they need?

The 2005 Honda CR-V uses a 2.4L K24A1 four-cylinder engine. It requires four spark plugs, and the factory-recommended gap is 0.044 inches (1.1mm). Honda originally equipped this engine with NGK or Denso iridium plugs. The most common OEM part numbers are NGK IZFR6K11 and Denso SKJ20DR-M11.

Getting the gap wrong too wide or too narrow can cause hard starts, poor fuel economy, engine knock, or even catalytic converter damage over time. That's why buying plugs that are either pre-gapped correctly or verifying the gap yourself before installation matters so much. If you want to double-check the exact spec, our page on CR-V spark plug gap for NGK specifications breaks it down by part number.

Where can you actually buy pre-gapped 2005 CR-V spark plugs?

Auto parts stores

Places like AutoZone, O'Reilly Auto Parts, Advance Auto Parts, and NAPA all carry spark plugs for the 2005 CR-V. Walk in, give them your vehicle's year, make, and model, and they'll pull the right plugs off the shelf. Many iridium plugs from NGK and Denso come pre-gapped to factory specs out of the box, but this isn't guaranteed especially if the box was dropped or handled roughly.

Tip: Ask the store associate to check the gap with a feeler gauge before you leave. Most stores have one behind the counter and will do it for free.

Online retailers

Amazon, RockAuto, and the online storefronts of AutoZone and O'Reilly all sell 2005 CR-V spark plugs. RockAuto tends to have the lowest prices on NGK and Denso plugs, but shipping costs can add up. Amazon is convenient if you have Prime, but beware of third-party sellers shipping counterfeit plugs. Always check that the seller is either Amazon directly or the parts manufacturer's official store.

Honda dealerships

A Honda dealer parts department will sell you the exact OEM plugs for the 2005 CR-V. You'll pay a premium usually $15–$20 per plug versus $8–$12 aftermarket but you'll get genuine parts that are guaranteed to be correctly gapped from the factory. If you're not comfortable verifying the gap yourself, this is the safest option.

Walmart

Walmart's auto section stocks NGK and Champion plugs for the 2005 CR-V at competitive prices. Their in-store availability varies by location, but you can check stock online before driving over.

Should you buy pre-gapped plugs or set the gap yourself?

Most iridium and platinum plugs marketed for the 2005 CR-V come pre-gapped. But "pre-gapped" doesn't always mean "correctly gapped." Manufacturing tolerances, shipping vibrations, and handling can shift the gap slightly. Here's a simple rule of thumb:

  • Iridium and platinum plugs – Usually pre-gapped. Check with a wire-type feeler gauge (not a coin-style gap tool, which can damage the fine electrode tip).
  • Copper plugs – Rarely pre-gapped for specific vehicles. Always set the gap manually.
  • Multi-electrode plugs – Typically not adjustable. Buy the correct part number and trust the factory gap.

A quality feeler gauge costs about $5 at any auto parts store. Slide the 0.044" blade between the electrode and ground strap. It should slide through with slight resistance. If it's too tight, the gap is too narrow. If it slides through loosely, the gap is too wide.

You can learn more about the differences between plug types and how gap affects performance in our guide on the best spark plugs and gap specs for the CR-V.

What happens if the gap is wrong on your 2005 CR-V?

A gap that's too small won't create a big enough spark to fully ignite the air-fuel mixture. You'll notice sluggish acceleration and higher fuel consumption. A gap that's too large requires more voltage from the ignition coil to jump the gap. On the 2005 CR-V's coil-on-plug system, this extra strain can burn out coils over time and ignition coil replacement costs $80–$150 each.

Common symptoms of an incorrect gap include:

  • Engine misfires, especially under load or at highway speeds
  • Rough idle or engine vibration at stoplights
  • Check engine light with P0300–P0304 misfire codes
  • Noticeable drop in fuel economy
  • Failed emissions test

If you're replacing plugs and already have a check engine light, our CR-V spark plug replacement and gap guide covers the full step-by-step process, including how to reset the code afterward.

How much should 2005 CR-V spark plugs cost?

Here's a realistic price breakdown for a set of four plugs:

  • NGK IZFR6K11 (Iridium IX) – $8–$12 each, $32–$48 for a set of four
  • Denso SKJ20DR-M11 (Iridium TT) – $7–$11 each, $28–$44 for a set of four
  • Champion RE10PMC5 (Double Platinum) – $5–$8 each, $20–$32 for a set of four
  • OEM Honda plugs at dealership – $15–$20 each, $60–$80 for a set of four

Don't cheap out on no-name brands. Counterfeit and low-quality plugs are a real problem on marketplaces like Amazon and eBay. Stick with NGK, Denso, or Champion from a trusted seller.

What are the most common mistakes people make buying plugs for this vehicle?

Buying the wrong plug for the engine variant. Some 2005 CR-V models sold outside the U.S. use different engines with different plug requirements. Always confirm your engine code (stamped on the engine block) matches the plug application chart.

Assuming pre-gapped means ready to install. As mentioned above, always verify. It takes 30 seconds per plug and can save you a headache.

Over-tightening during installation. The 2005 CR-V's aluminum cylinder head is soft. Torque plugs to 13 ft-lbs. If you don't have a torque wrench, hand-thread the plug until snug, then turn an additional 1/16 to 1/8 of a turn with a ratchet.

Not replacing plug well gaskets or inspecting coil boots. While you're in there, check the rubber boots on each ignition coil for cracks or carbon tracking. A torn boot can cause a misfire even with brand-new plugs.

Quick checklist before you buy

  • Confirm your engine is the 2.4L K24A1 (check under the hood or your registration)
  • Choose NGK IZFR6K11 or Denso SKJ20DR-M11 for OEM-spec performance
  • Verify the gap is 0.044" (1.1mm) with a wire feeler gauge before installing
  • Buy from a reputable source auto parts store, Honda dealer, or verified online seller
  • Pick up a feeler gauge and anti-seize compound while you're at it
  • Replace all four plugs at once for even wear and consistent performance
  • Torque to 13 ft-lbs don't overtighten into the aluminum head

Next step: Pull one of your current plugs and check the part number stamped on the ceramic insulator. Match it to the NGK or Denso numbers listed above. If it's different, someone may have installed the wrong plugs previously which could explain any running issues you're experiencing.