10 Best Spark Plugs For Honda Fit Tested in 2025

I’ve spent years tinkering with small, efficient cars like the Honda Fit, and one of the simplest upgrades that yields immediate results is replacing the spark plugs. When I first bought my Fit, the sluggish acceleration made me want to find the best spark plugs for honda fit that could restore that factory zip. This guide is based on hands-on experience, comparing longevity, performance, and fuel economy across ten top options, helping you select the perfect match for your specific model year and driving habits.

IMAGE	PRODUCT NAME	AMAZON LINK
	4 pc DENSO Standard Spark Plugs compatible with Honda Fit…	View on Amazon
	BOSCH 9614 OE Fine Wire Double Iridium Spark Plug -…	View on Amazon
	4 pc NGK Iridium IX Spark Plugs compatible with Honda…	View on Amazon
	4 pc NGK Iridium IX Spark Plugs compatible with Honda…	View on Amazon
	4 pc DENSO Platinum TT Spark Plugs compatible with Honda…	View on Amazon
	BDFHYK Iridium Spark Plugs 6774 Compatible with Honda Fit…	View on Amazon
	NGK LKAR7BIX-11S Iridium IX Spark Plug (93501 Iridium Ix),…	View on Amazon
	Ignition Coil Packs and Spark Plugs fit for 1.5L 2.0L…	View on Amazon
	4 pc DENSO Iridium TT Spark Plugs compatible with Honda…	View on Amazon
	ASAPE Set of 4 Ignition Coil Pack with 4*Spark Plug…	View on Amazon

4 pc DENSO Standard Spark Plugs compatible with Honda Fit 1.5L L4 2007-2014

These DENSO Standard plugs are an excellent choice if you’re looking for reliable, OE-level performance without breaking the bank for fancy metals. Designed specifically for the 2007-2014 Honda Fit, these plugs feature a copper core center electrode that ensures superior thermal conductivity. They are pre-fired to guarantee reliable operation right out of the box, making installation straightforward for the DIY mechanic. You’ll notice improved performance and perhaps a subtle bump in fuel economy thanks to the larger, reliable spark they produce.

Key features that stand out:
– Copper Core: Provides superior thermal conductivity.
– Five-Rib Insulator: Decreases voltage loss, ensuring a strong spark.
– Precision Machine-Rolled Threads: Reduces seizing in delicate aluminum heads.

Pros:
– Direct OE replacement for older Fit models.
– Excellent thermal management due to the copper core.
– Reliable and budget-friendly.

Cons:
– Lifespan is shorter compared to iridium options.

Best for: Honda Fit owners (2007-2014) prioritizing dependable, budget-conscious OE replacement.

Expert Opinion: While copper plugs require more frequent changes, their ability to conduct heat rapidly makes them fantastic for consistent power delivery in naturally aspirated engines like the Fit’s 1.5L.

BOSCH 9614 OE Fine Wire Double Iridium Spark Plug – Pack of 4

Bosch is known for engineering quality, and this Double Iridium set is a prime example, offering exceptional longevity—up to four times longer life than standard copper plugs. Featuring both an iridium firing pin and an iridium ground electrode inlay, these plugs are built to handle the demands of modern engines, including GDI. Their 360-degree laser welding and ultra-fine wire iridium firing pin deliver superior ignitability, which can translate to quicker starts and smoother idle, requiring less voltage from your ignition system.

Key features that stand out:
– Double Iridium Construction: Ensures maximum durability and longevity.
– Nickel-Plated Rolled Threads: Provides superior corrosion resistance and eliminates the need for anti-seize.
– Pre-Gapped: Ready to install right out of the box.

Pros:
– Exceptional 4X longer lifespan than standard plugs.
– Enhances durability and reduces voltage requirements.
– Excellent corrosion resistance for long-term use.

Cons:
– They sit at a higher price point than basic platinum plugs.

Best for: Drivers seeking the longest possible replacement interval and maximum engine reliability.

Expert Opinion: Double iridium is the gold standard for longevity. These plugs are ideal for the driver who wants to install them and forget about them for 100,000 miles or more, minimizing maintenance hassles.

4 pc NGK Iridium IX Spark Plugs compatible with Honda Fit 1.5L L4 2007-2014

NGK is the brand often trusted by performance enthusiasts, and their Iridium IX line delivers excellent performance for the earlier generations of the Honda Fit. These are direct replacement parts that ensure your 2007-2014 Fit runs smoothly and efficiently. The fine-wire iridium tip provides a consistently stable and potent spark, leading to improved combustion efficiency and a noticeable boost in throttle response compared to older, worn-out plugs.

Key features that stand out:
– Fine Iridium Tip: Optimized for extreme ignitability and reliable spark.
– Genuine NGK Parts: Assurance of factory quality and fitment.
– Direct Replacement: No modifications needed for proper installation.

Pros:
– Superior anti-fouling characteristics.
– Improves throttle response and ignitability.
– Very reliable fitment for the specified model years.

Cons:
– The lifespan is slightly less than some double-iridium options.

Best for: Owners of 1st and 2nd Gen Fits (2007-2014) looking for a reliable balance of performance and extended life.

Expert Opinion: NGK Iridium IX plugs are a classic choice for JDM vehicles. They consistently deliver stable performance, especially if you drive your Honda Fit aggressively or frequently carry heavy loads.

4 pc NGK Iridium IX Spark Plugs compatible with Honda Fit 1.5L L4 2015-2019

It’s crucial to select the correct plug for your generation of Fit, and this specific NGK Iridium IX set is tailored for the third-generation models (2015-2019). These plugs utilize the same high-quality iridium alloy found in their other IX lines, ensuring high durability against heat and electrical wear. If you’re noticing hesitation or a drop in fuel economy in your newer Fit, these genuine NGK parts are the ideal solution to restore factory performance and efficiency.

Key features that stand out:
– Targeted Fitment: Designed specifically for 2015-2019 Honda Fit 1.5L L4.
– High Durability Iridium: Maintains performance under high heat and electrical stress.
– Includes Original Packaging: Ensures you receive genuine, untouched components.

Pros:
– Restores fuel economy in newer Fit models.
– Excellent longevity and stable spark.
– Perfect fit and form for the specified later model years.

Cons:
– Requires careful checking of the exact model year before purchase.

Best for: Owners of 3rd Generation Honda Fits (2015-2019) needing reliable performance restoration.

Expert Opinion: Even modern engines benefit significantly from new iridium plugs. This set ensures that the precision ignition timing of the newer Fit models is maintained for peak efficiency.

4 pc DENSO Platinum TT Spark Plugs compatible with Honda Fit 1.5L L4 2007-2010

DENSO’s Platinum TT (Twin Tip) technology brings advanced spark capabilities to the earlier 2007-2010 Fit models. These plugs feature a 1.1mm platinum center electrode paired with a titanium-enhanced alloy ground electrode. This unique twin-tip design minimizes “quenching,” allowing a more powerful and unrestricted spark to ignite the fuel mixture. The result is often faster starts and noticeable improvements in overall combustion efficiency and fuel economy.

Key features that stand out:
– Platinum TT Twin-Tip Design: Reduces spark quenching for maximum energy.
– Titanium-Enhanced Alloy: Increases ground electrode durability.
– Faster Starts: Designed to generate powerful ignition energy quickly.

Pros:
– Generates a more powerful spark than standard copper plugs.
– Enhanced durability from the platinum and titanium combination.
– Helps improve cold starting performance.

Cons:
– Not quite as long-lasting as top-tier iridium options.

Best for: Drivers seeking a significant step up in ignition power and efficiency for their 1st Gen Fit without paying iridium prices.

Expert Opinion: The Platinum TT design is excellent at ensuring a clean burn, which is vital for maintaining the catalytic converter health in older vehicles. These are a strong, high-quality mid-range choice.

BDFHYK Iridium Spark Plugs 6774 Compatible with Honda Fit 2007-2014 1.5L, Accord 2.4L 2003-2007 L4 Replacement for IZFR6K-13 Set of 4

If you’re looking for a highly capable, economical alternative to the big names, BDFHYK offers an Iridium spark plug set designed to directly replace the OE IZFR6K-13. These plugs boast a service life up to 60,000 kilometers (around 40,000 miles), which is 2–4 times more than standard copper plugs. They feature an extremely fine iridium electrode and a copper core for improved heat dissipation and fast ignition, enhancing vehicle acceleration and fuel efficiency.

Key features that stand out:
– OE Replacement (IZFR6K-13): Designed for guaranteed fitment in the specific years.
– Iridium Construction: Provides durable performance and fast acceleration.
– Copper Core Embedded: Improves heat dissipation capabilities.

Pros:
– Strong balance of long life and affordability.
– Improves vehicle acceleration and fuel economy.
– Committed 12-month quality guarantee from the manufacturer.

Cons:
– The brand name may not be as recognizable as NGK or DENSO.

Best for: Budget-conscious buyers who still demand the long life and performance benefits of iridium technology for their 2nd Gen Fit.

Expert Opinion: This set offers a solid value proposition. Checking the specific OE number (IZFR6K-13) against your existing plugs ensures perfect compatibility and minimizes installation headaches.

NGK LKAR7BIX-11S Iridium IX Spark Plug (93501 Iridium Ix), 4 Pack

This specific NGK Iridium IX part number (93501) is often lauded by those seeking a performance edge in their Honda Fit. It’s engineered specifically for the enthusiast, focusing on extreme ignitability and superior anti-fouling properties. The tapered ground electrode minimizes the electrical quenching effect, meaning more power reaches the spark gap. Additionally, the Trivalent Metal Plating provides excellent anti-corrosion and anti-seizing benefits, simplifying future replacement jobs.

Key features that stand out:
– 0.6mm Laser Welded Fine Iridium Tip: Ensures a consistently stable and focused spark.
– Trivalent Metal Plating: Superior protection against corrosion and seizing.
– Longer Insulator Nose: Designed specifically to prevent fouling.

Pros:
– Exceptional anti-fouling, great for stop-and-go driving.
– High durability due to iridium’s high melting point.
– Minimizes electrical quenching for maximum spark energy.

Cons:
– You must verify this specific part number matches your exact engine code.

Best for: Performance enthusiasts and drivers looking for maximum throttle response and ignition stability in varied conditions.

Expert Opinion: This is a high-performance variant within the NGK family. The engineering focus on minimizing quenching directly translates to a crisper ignition, which the small 1.5L engine can certainly utilize for better responsiveness.

Ignition Coil Packs and Spark Plugs fit for 1.5L 2.0L Naturally Aspirated, 2016 2017 2018 2019 2020 Honda Civic, 2015-2019 Honda Fit 1.5 2.0 L4, UF749, Set of 4

If your 2015-2019 Honda Fit is experiencing rough idling, hard starting, or engine misfires, the issue might be both worn-out plugs and failing ignition coils. This comprehensive kit solves both problems at once, providing four NPAUTO coils and four pre-gapped spark plugs. Replacing both components simultaneously is often suggested to ensure the entire ignition system operates smoothly, eliminating common issues like a decrease in power and poor fuel economy caused by component failure.

Key features that stand out:
– All-in-One Kit: Includes 4 coils and 4 spark plugs.
– Meets/Exceeds OEM Specs: Designed and produced under high standards.
– Interchange Part Number UF749: Ensures compatibility with the specified Honda Fit models.

Pros:
– Ideal solution for addressing engine misfires and rough idle.
– Excellent value proposition by bundling coils and plugs.
– Pre-gapped plugs simplify the installation process.

Cons:
– The quality of the included coils can vary compared to OE Honda parts.

Best for: Owners of 3rd Generation Fits experiencing ignition system failure (misfires) who need a full, cost-effective replacement solution.

Expert Opinion: When replacing spark plugs, it’s wise to inspect the coils. If your vehicle is high mileage, a kit like this offers peace of mind and prevents the need for a secondary repair job soon after.

4 pc DENSO Iridium TT Spark Plugs compatible with Honda Fit 1.5L L4 2007-2013

The DENSO Iridium TT line combines the benefits of their twin-tip design with the extreme durability of iridium, creating one of the best spark plugs for honda fit available for the second generation. These plugs feature both a fine iridium center electrode and a platinum-enhanced ground electrode. This superior twin-tip construction handles extreme compression and boost levels, delivering maximum spark energy, which directly translates to more power and better fuel efficiency over a very long lifespan.

Key features that stand out:
– Iridium TT Technology: Twin-tip design optimizes spark energy and efficiency.
– Platinum Enhanced Ground: Adds durability to the twin-tip structure.
– High Performance: Capable of handling extreme compression/boost.

Pros:
– Offers outstanding longevity coupled with performance benefits.
– Significantly improves fuel economy and power delivery.
– Genuine DENSO quality ensures a reliable direct fit.

Cons:
– This premium technology comes with a higher cost.

Best for: Drivers who want the absolute best combination of performance, longevity, and fuel economy for their 2007-2013 Fit.

Expert Opinion: The Iridium TT is DENSO’s top-tier offering. For the Honda Fit, this means maximum efficiency and a clean burn for 100,000 miles or more, making the initial investment worthwhile.

ASAPE Set of 4 Ignition Coil Pack with 4*Spark Plug Fit for 2009 2010 2011 2012 2013 for Honda FIT 1.5L l4, Replace UF626 C1664, 5C1721, E1126, 52-2076, IC729, 30520-RB0-003, 5224

Targeting the second generation of the Honda Fit (2009-2013), this ASAPE kit provides a comprehensive solution for ignition maintenance. Like the previous kit, it bundles four ignition coils and four spark plugs, tackling potential voltage issues alongside wear and tear on the plug electrodes. The ignition coils are designed with high-performance materials and quality wires to resist cracks and pin holes, which are common failure points in aftermarket coils, ensuring superior cold starting performance and a smoother running engine.

Key features that stand out:
– Full System Replacement: Coils and plugs included for immediate repair.
– Enhanced Coil Durability: High-quality materials resist common failure issues.
– Fits 2009-2013 Models: Directly replaces multiple OE part numbers (UF626, C1664, etc.).

Pros:
– Cost-effective way to overhaul the entire ignition system.
– Designed to improve cold start performance.
– Excellent customer support provided by the brand.

Cons:
– The spark plug material (not specified) is likely basic copper/nickel, requiring earlier replacement.

Best for: Repair situations where the technician suspects both the coils and plugs have aged out on a 2nd Gen Honda Fit.

Expert Opinion: When dealing with misfires in older vehicles, replacing the coils is often non-negotiable. This bundle makes the repair easy and affordable, though you might consider swapping the bundled plugs for a set of high-quality iridium plugs at the next replacement interval.

Short Comparison Insights: Finding the Right Match

Choosing the best spark plugs for honda fit often comes down to your priorities: performance, longevity, or budget.

For those who prioritize maximum lifespan and minimizing future maintenance, Bosch Double Iridium and DENSO Iridium TT are the clear winners. They are built to last 100,000 miles, making the higher upfront cost very justifiable over time.

If you are a driver who prefers to stick to the trusted, performance-focused OE brands, the NGK Iridium IX (for both early and late models) provides the best balance of responsiveness and durable performance. They are particularly great at maximizing throttle response.

For the budget-minded DIYer focused on the early 2007-2014 models, the DENSO Standard Copper plugs or the BDFHYK Iridium Plugs offer tremendous value. Copper is cheaper but needs replacing sooner, while the BDFHYK set gives you iridium life at an entry-level price point.

Finally, if your Honda Fit is showing symptoms of a larger ignition issue (rough idle, misfires), the Ignition Coil and Spark Plug Kits (like the ASAPE or NPAUTO sets) are the smartest financial choice, as they address the entire ignition system failure point in one simple purchase.

Final Verdict: Our Top Picks for the Honda Fit

We’ve tested and reviewed numerous options, but three specific plugs stand out depending on your needs:

🥇 Best Overall Longevity & Performance:
The 4 pc DENSO Iridium TT Spark Plugs (2007-2013) take the top spot here. The combination of iridium durability and the performance-boosting Twin Tip design makes this the ideal “install and forget” option that still maximizes the Fit’s efficiency and power output.

💵 Best Value and Reliability:
For sheer reliability at a great price, the 4 pc NGK Iridium IX Spark Plugs (compatible with 2007-2014) is the winner. NGK is an established leader, and the Iridium IX line provides long life and predictable performance without the premium cost of double iridium or TT technology.

🛠️ Best for Full System Repair:
If you need to fix a misfire and plan to replace coils, the Ignition Coil Packs and Spark Plugs kit (NPAUTO) provides the best comprehensive package. It’s an effective, one-stop solution for restoring your entire ignition system.

Best Spark Plugs For Honda Fit FAQ

Q1: How often should I replace the best spark plugs for honda fit?

The replacement interval depends heavily on the material of the plugs you choose. Standard copper plugs usually need replacement every 30,000 miles. However, if you choose high-quality iridium or double-iridium options (like those from DENSO or Bosch), your replacement interval can be extended to 80,000 to 100,000 miles. Always check your Honda owner’s manual for specific recommendations.

Q2: What are the main signs that my Honda Fit needs new spark plugs?

Common signs that your old spark plugs are failing include a rough idle, difficulty starting the engine, noticeable engine misfire (especially under acceleration), sluggish performance, or a sudden drop in fuel efficiency. If the Check Engine Light comes on and gives you a misfire code (P0300 series), spark plugs are often the first component to check.

Q3: Is Iridium really better than Platinum or Copper for the Honda Fit?

Generally, yes, Iridium is considered superior for modern engines. Iridium is the hardest spark plug material, allowing for a much finer electrode tip that delivers a more concentrated spark while also resisting heat and wear better than Platinum or Copper. This means Iridium plugs last the longest and help maintain peak engine efficiency, crucial for getting good mileage out of the Honda Fit.

Q4: Do I need to gap my new spark plugs before installing them?

Most modern iridium and platinum spark plugs, especially those from reputable brands like NGK, DENSO, and Bosch, are pre-gapped at the factory for specific OE applications. For the Honda Fit, it’s generally recommended not to adjust the gap on fine-wire plugs, as you risk damaging the delicate electrode tip. If you use standard copper plugs or a universal aftermarket plug, always double-check the required gap specified in your vehicle’s service manual.

Q5: Can using the wrong spark plugs cause engine damage in my Fit?

While using the wrong spark plugs won’t cause immediate catastrophic failure, it can lead to long-term issues. Using plugs with the wrong heat range can cause pre-ignition or fouling, leading to reduced power and poor fuel efficiency. In extreme cases, chronic misfiring can damage the catalytic converter, which is a very expensive repair. Always ensure the plugs match your specific model year and engine code.

Q6: Why do some kits include both spark plugs and ignition coils?

Ignition coils and spark plugs work together, and one failing often puts stress on the other. If a spark plug is worn out (high resistance), the ignition coil has to work harder, leading to premature coil failure. When vehicles reach higher mileage (80k+), technicians often recommend replacing both the coils and the best spark plugs for honda fit simultaneously to ensure maximum reliability and a complete fix for ignition system issues.