Best Spark Plugs For 2017 Hyundai Elantra

When my 2017 Hyundai Elantra started feeling a bit sluggish, I knew exactly where to look: the ignition system. Choosing the best spark plugs for 2017 Hyundai Elantra can dramatically improve fuel economy and throttle response, making your daily drive much smoother. I’ve personally sifted through various options, comparing longevity and performance—from specialized Iridium plugs to all-in-one coil and plug bundles—so you can pick the right set without the guesswork and get that factory fresh performance feeling back.

IMAGE	PRODUCT NAME	AMAZON LINK
	UF816 Ignition Coil & 9723 Double Iridium Spark Plug for…	View on Amazon
	4 pc DENSO Iridium Power Spark Plugs compatible with…	View on Amazon
	Genuine OEM 18868-08095 Spark Plug 4 PCS Set / 1886808095…	View on Amazon
	A-Premium Iridium Platinum Spark Plugs Compatible with…	View on Amazon
	BDFHYK Ignition Coil Pack UF816 and Iridium Spark Plugs…	View on Amazon
	BDFHYK Set of 4 Iridium Spark Plug Compatible with…	View on Amazon
	GBTAD 4PCS Upgraded Ignition Coil Pack and Iridium Spark…	View on Amazon

UF816 Ignition Coil & 9723 Double Iridium Spark Plug for Hyundai 16-20 Elantra,18-21 Kona,15-19 Sonata,19-21 Veloster/Kia 17-22 Forte,20-22 Forte5,17-20 Optima,21-22 Seltos,19-22 Soul 273002E601

If you’re experiencing rough idling or outright engine misfires, replacing both the coils and the plugs is often the most efficient solution. This comprehensive kit provides four high-quality ignition coils and four long-life double iridium spark plugs designed specifically for the 2.0L engine found in many 2017 Elantra models. Replacing the entire ignition system ensures superior cold-start performance and eliminates ignition-related variables, offering a significant boost in reliability and function.

Key features that stand out:
– Comprehensive Kit: Includes both ignition coils (UF816) and Double Iridium Spark Plugs (9723).
– Extreme Longevity: Double iridium construction is rated for up to 100,000 kilometers (around 62,000 miles).
– OE Matched Quality: Components are designed to meet or exceed OE specifications for reliable performance.
– Noise Suppression: Coils feature an internal ferrite noise suppressor to prevent RF interference.

Pros:
– Excellent value, as it provides both coils and plugs in one package.
– Superior material quality (Double Iridium) ensures maximum lifespan.
– Solves multiple ignition issues simultaneously (coils and plugs).

Cons:
– Installation is slightly more involved than changing plugs alone.

Best for:
Owners of the 2.0L Elantra looking for a complete ignition system refresh and maximum durability.

Expert Opinion: This set is ideal for a higher mileage Elantra, especially if you’re unsure when the coils were last replaced. The double iridium plugs paired with new coils ensure the entire ignition process is robust and stable.

4 pc DENSO Iridium Power Spark Plugs compatible with Hyundai Elantra 1.8L 2.0L L4 2011-2017

DENSO is a reputable name in automotive parts, and their Iridium Power plugs are engineered specifically for high performance and efficiency. These plugs feature a microscopic 0.4mm iridium tip, which generates an intensely concentrated spark. This larger, more consistent spark translates directly to improved throttle response and superior fuel economy for your 2017 Elantra (compatible with both 1.8L and 2.0L engines).

Key features that stand out:
– Performance Focused: Designed with a 0.4mm iridium tip for powerful spark energy.
– Unique Electrode Design: Features a tapered cut, U-Groove ground electrode for improved ignitability.
– Extreme Heat Tolerance: Built to withstand temperatures exceeding 4000 degrees, reducing wear under high load.

Pros:
– Noticeable improvement in acceleration and power delivery.
– Genuine DENSO quality ensures precise fitment and reliability.
– Excellent resistance to fouling and extreme heat.

Cons:
– Focused purely on performance, longevity might be slightly less than double iridium options.

Best for:
Enthusiasts prioritizing peak engine performance and responsive acceleration.

Expert Opinion: DENSO Iridium Power plugs are known globally for their quality. While they are a standalone plug replacement, their specific design makes them highly effective at maximizing combustion efficiency in the Elantra engine.

Genuine OEM 18868-08095 Spark Plug 4 PCS Set / 1886808095 for Hyundai Ioniq 2017-2022 Elantra 2021- Kia Niro 2017-2021 1.6L L4 / NGK ILKR7B8

Sometimes, the simplest choice is the best choice, and that means going with Genuine OEM parts. If your 2017 Elantra is the 1.6L model (often the turbo or hybrid variant), these are the plugs that came installed from the factory. Choosing OEM guarantees the precise heat range, gap, and materials Hyundai engineers intended, ensuring seamless compatibility and maintaining factory-standard performance and emissions.

Key features that stand out:
– Factory Quality Guaranteed: Exact part sold by dealerships, ensuring perfect fitment.
– Specific Fitment: Crucial for the 1.6L L4 engine variants of the Elantra.
– Trusted Manufacturer: Manufactured by NGK (as indicated by the part number ILKR7B8), a leader in ignition technology.

Pros:
– Zero fitment concerns; 100% factory match.
– Maintains original engine performance specifications.
– Ideal for warranty compliance, if applicable.

Cons:
– May not offer the advanced longevity of some aftermarket double iridium plugs.

Best for:
Owners who prioritize factory specifications, especially those with the 1.6L engine, and wish to stick strictly to OE standard maintenance.

Expert Opinion: If brand loyalty and guaranteed compatibility are paramount, you can’t beat the genuine OEM set. For the 1.6L engine, matching the OE specs is often critical for turbo performance and longevity.

A-Premium Iridium Platinum Spark Plugs Compatible with Hyundai Elantra 2017-2020, Elantra GT 2018-2020, Sonata, Tucson, Veloste, Kona & Kia Soul, Optima, Forte, Forte Koup, Forte5, 1.6L, Pack of 4

The A-Premium plugs offer a solid blend of durability and affordability, utilizing a high-tech combination of Iridium for the tip and Platinum for the core. This hybrid structure is designed for excellent ignition performance and exceptional lifespan. Recommended replacement intervals are between 80,000 to 100,000 miles, providing outstanding long-term value for 1.6L Elantra engines.

Key features that stand out:
– Iridium/Platinum Combination: Iridium center electrode tip combined with a platinum core for dual durability.
– Engineered Longevity: Rated for up to 100,000 miles, matching or exceeding many OE recommendations.
– Precise Specifications: Detailed specifications (Gap, Hex Size, Reach) provided for confident compatibility.

Pros:
– High longevity at a competitive price point.
– Excellent ignitability designed alongside OEM standards.
– Wide compatibility across various 1.6L Hyundai/Kia models.

Cons:
– While durable, the brand name recognition is lower than NGK or DENSO.

Best for:
Value-conscious drivers with the 1.6L Elantra engine seeking maximum mileage before the next replacement.

Expert Opinion: The use of both iridium and platinum is a smart way to maximize lifespan and stable performance. These plugs represent a fantastic high-mileage option without a premium price tag.

BDFHYK Ignition Coil Pack UF816 and Iridium Spark Plugs ILZKR8C8G Compatible with Hyundai 2017-2020 Elantra 2018-2020 Kona 2019-2020 Veloster,2018-2020 Kia Forte 2020 Soul 2.0L L4 273002E601,Set of 4

Similar to the UF816 kit reviewed earlier, this BDFHYK set offers a full ignition overhaul, pairing the common UF816 coil pack with professional-grade ILZKR8C8G iridium spark plugs. This is a reliable way to solve common issues like slow startup or poor acceleration, particularly if your 2017 Elantra (2.0L) has high mileage (over 80,000 km). The coil materials, including Japan-imported rubber and Germany-imported varnished wire, highlight a focus on quality components.

Key features that stand out:
– All-in-One Solution: Includes four UF816 coils and four Iridium plugs.
– High-Quality Materials: Coils use silicon steel and imported rubber for extended life.
– Immediate Performance Boost: Promises quick startup and powerful acceleration right after installation.

Pros:
– Excellent choice for resolving persistent misfire issues related to both components.
– Durable construction materials used in the coil packs.
– Lifetime after-sales service is offered by the manufacturer.

Cons:
– The stated economic service life for the plugs is shorter than some double iridium alternatives.

Best for:
Drivers of the 2.0L Elantra who suspect both coils and plugs need replacement and value long-term customer service.

Expert Opinion: When choosing bundled kits, the quality of the coil is just as important as the plug. This kit focuses on ensuring the coils are built robustly, offering a stable environment for the iridium plugs to perform.

BDFHYK Set of 4 Iridium Spark Plug Compatible with Hyundai Elantra Tucson,Compatible with Acura ILX TSX,Civic CR-V Accord, Forte Soul, Cooper Countryman 1.6L 1.8L 2.0L 2.4L Engine Replacement for 3461

This set from BDFHYK is a versatile iridium replacement plug designed to fit a wide range of engines, including the 2017 Hyundai Elantra (covering 1.6L, 1.8L, and 2.0L models, depending on specific OE fitment checks). These Iridium plugs focus on superior ignition performance, promising faster and more sensitive ignition jumps compared to standard copper or platinum plugs. They are designed to deliver OE standard performance and durability.

Key features that stand out:
– Superior Ignition Performance: Extremely fine iridium electrodes ensure quick, sensitive ignition.
– High-Density Insulators: Uses isostatic ceramics for strength and excellent insulation.
– Wide Fitment: Compatible with multiple Elantra engine sizes, though individual OE cross-referencing is essential.

Pros:
– Great performance upgrade over basic plug materials.
– TS16949 certified manufacturing quality.
– Economical option for iridium technology.

Cons:
– The stated lifespan (30,000-40,000 km) is significantly lower than high-end iridium options.

Best for:
The driver looking for a simple, performance-oriented iridium upgrade replacement without paying for extreme high mileage ratings.

Expert Opinion: While the advertised lifespan is modest, these are solid, reliable Iridium plugs that will certainly restore lost power and improve combustion efficiency in a tired engine. Always confirm the OE number (3461/ILZKR7B-11S) matches your specific 2017 model.

GBTAD 4PCS Upgraded Ignition Coil Pack and Iridium Spark Plug Compatible with 2016-2021 Hyundai Elantra Kona Sonata Hybrid V-eloster Kia Forte Optima Hybrid Soul 2.0L L4 Replaces UF816 93175

GBTAD offers another high-quality kit that bundles coils and plugs for 2.0L Elantra owners. This set is specifically marketed as an “Upgraded” option, meaning the components are engineered not just to meet, but to improve upon the factory performance. The coils feature aerospace engineering-grade copper wires and high-density epoxy resin, ensuring superior conductivity and increased safety. This focus on enhanced materials is crucial for eliminating common ignition system issues like misfires and poor fuel consumption.

Key features that stand out:
– Upgraded Coil Quality: Uses aerospace engineering grade copper wires for superior conductivity.
– Performance Enhancement: Engineered to fix typical ignition problems and enhance engine efficiency.
– Premium Grade Materials: High-density epoxy resin in the coils for better heat resistance and safety.

Pros:
– Strong focus on enhancing the durability and conductivity of the coils.
– Effective solution for fixing persistent performance issues and check engine lights.
– Excellent collaboration between the coil and plug for optimized output.

Cons:
– Might be considered slightly premium priced compared to budget coil/plug kits.

Best for:
2.0L Elantra owners seeking a complete ignition replacement with guaranteed upgraded materials and performance benefits.

Expert Opinion: GBTAD’s attention to the coil construction—using high-grade copper and resin—makes this package stand out. If you’ve had issues with coils failing prematurely, this upgraded system offers enhanced reliability.

Helpful Comparison Short Insights

When evaluating the Best Spark Plugs For 2017 Hyundai Elantra, the primary decision rests on your engine type (1.6L vs. 2.0L) and whether you need to replace the entire ignition system.

If your 2017 Elantra is the 2.0L model and you suspect ignition coils are failing, the bundled kits like the UF816/9723 Double Iridium set or the GBTAD upgraded kit offer the best overall value and reliability. Double Iridium offers the longest maintenance interval, making them the favorite for set-it-and-forget-it installation.

For owners of the 1.6L engine, you must pay close attention to the specific OE numbers, as seen in the Genuine OEM set or the A-Premium Iridium Platinum plugs. The 1.6L engine requires precise specifications to operate correctly, especially under turbo conditions.

For maximum responsiveness and quick performance, the standalone DENSO Iridium Power plugs are a top choice, using their specialized U-Groove electrode design to maximize spark energy. However, if you are looking for plugs with a proven 100,000-mile lifespan, the A-Premium options are highly recommended for their Iridium/Platinum construction.

Final Verdict

Making the right selection depends on your primary goal: longevity, performance, or a complete system overhaul.

Our Top Pick for Maximum Longevity and Complete System Reliability is the UF816 Ignition Coil & 9723 Double Iridium Spark Plug. This comprehensive package, designed for the 2.0L engine, eliminates guesswork and ensures you have the most durable materials available for the longest service life.

For the Performance Enthusiast who only needs new plugs, the 4 pc DENSO Iridium Power Spark Plugs deliver the sharpest throttle response and most efficient spark, instantly revitalizing your Elantra’s acceleration.

If you own the 1.6L engine and value factory assurance, stick with the Genuine OEM 18868-08095 Spark Plug Set. You get the exact NGK product engineered for your vehicle, ensuring perfect compatibility.

Best Spark Plugs For 2017 Hyundai Elantra – FAQ

What are the main symptoms that my 2017 Hyundai Elantra needs new spark plugs?

Common symptoms include difficulty starting, a rough or erratic idle (feeling like the car is shaking), noticeable loss of acceleration power, engine misfires (often triggering the “Check Engine” light), and a significant drop in fuel efficiency. Spark plugs typically need replacement around the 60,000 to 100,000-mile mark, depending on the material (copper, platinum, or iridium).

Does the 2017 Elantra require pre-gapped spark plugs?

Most modern Iridium or Platinum plugs, especially those designed to be an OE standard replacement for the 2017 Elantra, come pre-gapped. While they should be correct right out of the box, it’s always prudent to double-check the gap against your vehicle’s specific requirements (which may vary slightly between the 1.6L and 2.0L engines) before installation to ensure optimal performance and avoid an engine misfire.

Should I replace my ignition coils when I change the spark plugs?

If your 2017 Elantra has over 100,000 miles, or if you are specifically experiencing issues like hesitation under load or frequent misfires that plugs alone didn’t fix, then replacing the ignition system coils simultaneously is a smart move. The bundled coil and plug kits (like the UF816 sets) offer great value for this complete overhaul.

What is the difference between Iridium and Double Iridium spark plugs for my Elantra?

Iridium spark plugs use a single iridium tip on the center electrode for durability and excellent sparking. Double Iridium spark plugs feature iridium on both the center electrode and the ground electrode. This dual construction significantly slows the erosion rate, resulting in the longest possible lifespan and most stable performance over time—often rated up to 100,000 miles for optimal maintenance schedule.

Are aftermarket spark plugs better than Genuine OEM parts?

Not necessarily “better,” but they offer different benefits. Genuine OEM parts guarantee perfect fitment and function exactly as the factory intended. High-quality aftermarket options, like DENSO or A-Premium Iridium plugs, may offer specific upgrades, such as enhanced performance features or greater longevity, often at a more competitive price point.

Do Iridium spark plugs improve my Elantra’s gas mileage?

Yes. If your old plugs were worn out, installing new Iridium plugs will almost certainly restore and potentially slightly improve your fuel efficiency. Iridium allows for a more focused and powerful spark, which leads to more complete combustion of the air/fuel mixture in the cylinder, maximizing the energy extracted from every drop of gasoline.