Best Spark Plugs For Subaru Crosstrek with 7 Top Picks

When I first tackled changing the spark plugs on my Crosstrek’s horizontally opposed (Boxer) engine, I realized quickly that accessibility is key, but so is choosing the right component. We all want improved efficiency and reliable cold starts, especially when driving our favorite Subarus in tough weather. That’s why I’ve spent time testing and comparing options to find the best spark plugs for subaru crosstrek available today, focusing on longevity and peak performance.

IMAGE	PRODUCT NAME	AMAZON LINK
	4 pc NGK Laser Iridium Spark Plugs compatible with Subaru…	View on Amazon
	A-Premium Double Iridium Spark Plugs Compatible with Subaru…	View on Amazon
	A-Premium Set of 4 Ignition Coil Pack and Iridium Spark…	View on Amazon
	Genuine OEM Subaru Spark Plugs Forester Impreza Legacy…	View on Amazon
	SYKRSS SILZKAR7B11 Iridium Platinum Spark Plugs 4 Pack -…	View on Amazon
	UF724 Ignition Coil Pack and Iridium Spark Plugs Set of…	View on Amazon
	eosorssa Platinum Iridium Spark Plug (4Pcs) Fit for Subaru…	View on Amazon

4 pc NGK Laser Iridium Spark Plugs compatible with Subaru Crosstrek 2.0L H4 2018-2020

NGK is practically synonymous with Subaru performance and reliability, and these Laser Iridium plugs are engineered to meet or exceed OEM specifications for newer 2.0L Crosstrek models. The laser-welded iridium tip and platinum disc on the ground electrode ensure maximum durability and a consistent, powerful spark over extreme mileage. Choosing this set means you’re getting genuine NGK parts designed specifically for the Boxer engine, ensuring direct fitment and optimal performance for several years.

Key features that stand out:
– Genuine NGK Parts: Assurance of quality and exact specifications.
– Iridium Construction: Provides extreme durability and resistance to fouling.
– Direct Replacement: Designed specifically for 2018-2020 2.0L H4 Crosstreks.

Pros:
– Known OEM quality manufacturer.
– Exceptional lifespan due to iridium construction.
– Highly reliable ignition, reducing misfires.

Cons:
– Specifically limited to 2018-2020 models.

Best for: Newer Crosstrek owners seeking OEM-level quality and longevity.

Expert Opinion: NGK Laser Iridium plugs are the gold standard for many modern imports. Their consistent quality ensures that once installed, you won’t need to worry about the best spark plugs for subaru crosstrek for 100,000 miles or more.

A-Premium Double Iridium Spark Plugs Compatible with Subaru Impreza 2017-2020, Crosstrek 2018-2020, 2.0L, Pack of 4

A-Premium brings a strong, performance-oriented option with their Double Iridium plugs. By using iridium on both the center and ground electrodes, this design significantly resists wear and erosion, providing an even longer, more stable spark compared to standard iridium designs. They boast an exceptional mileage range, making them a fantastic long-term investment for those who put serious miles on their vehicles.

Key features that stand out:
– Double Iridium Construction: Iridium on both electrodes for maximum lifespan.
– Extensive Mileage Range: Recommended replacement interval of 100,000 to 120,000 miles.
– Optimized Gap Size (0.032″): Ensures proper factory ignition performance.

Pros:
– Superior resistance to wear and tear.
– Excellent value for the lifespan provided.
– Engineered for maximum ignition performance.

Cons:
– An aftermarket brand, though highly rated, might not satisfy OEM purists.

Best for: Drivers prioritizing maximum plug longevity and consistent performance over high mileage.

Expert Opinion: The move to double iridium technology in aftermarket plugs is a huge benefit for vehicles like the Crosstrek, which require less frequent maintenance due to their difficult-to-reach plugs. These deliver powerful ignition while extending service intervals substantially.

A-Premium Set of 4 Ignition Coil Pack and Iridium Spark Plugs Compatible with Subaru Outback 2015-2019 2.5L, Forester 2017-2018, Crosstrek 2016-2017, Legacy 2015-2019, XV Crosstrek 2015

Sometimes, when performance starts to degrade, it’s not just the plugs—it’s the coil packs as well. This comprehensive A-Premium kit provides four iridium spark plugs along with four matching ignition coil packs, making it the best spark plugs for subaru crosstrek choice if you are performing a complete ignition system overhaul. This kit focuses on stability, promising improved fuel efficiency and reduced emissions thanks to the high-quality iridium plugs and reliable coil performance.

Key features that stand out:
– Full Ignition System Kit: Includes 4 coil packs and 4 iridium plugs.
– Iridium Spark Plug Material: Extends spark plug life nearly threefold.
– Improved Engine Stability: Ensures a more stable idle speed and faster starting up.

Pros:
– One-stop solution for ignition troubles.
– Guaranteed fitment for the stated model years (especially 2016-2017 Crosstrek).
– Backed by a one-year unlimited-mileage guarantee.

Cons:
– If you only need plugs, buying the coils might be unnecessary cost.

Best for: Older Crosstreks (2015-2017) experiencing misfires or hesitation requiring a full ignition system refresh.

Expert Opinion: When vehicles reach 80,000+ miles, coil degradation can sometimes mimic plug failure. Replacing both components simultaneously is a professional recommendation for comprehensive maintenance, and this kit offers great peace of mind.

Genuine OEM Subaru Spark Plugs Forester Impreza Legacy Crosstrek 2011-2017 22401AA781 Set OF 4

For those who prioritize factory specs and maintaining their vehicle exactly as the manufacturer intended, using Genuine OEM Subaru Spark Plugs is always the safest bet. These plugs ensure perfect fitment and are guaranteed to perform within the precise parameters required by your Crosstrek’s Boxer engine. If your Crosstrek is still under warranty, using OEM parts often helps ensure you remain compliant with service requirements.

Key features that stand out:
– Genuine Subaru Part Number 22401AA781: Assures authenticity and direct replacement.
– Broad Model Coverage: Suitable for 2013-2016 Crosstrek (2.0 non turbo).
– Peace of Mind: Guaranteed to match factory performance specifications.

Pros:
– Highest guarantee of compatibility and quality.
– Ideal for warranty compliance.
– Dependable performance.

Cons:
– Typically higher priced than high-quality aftermarket equivalents.

Best for: Crosstrek owners (2013-2016) who demand OEM components only.

Expert Opinion: You can’t argue with OEM. While aftermarket options may offer slight improvements in specific areas, if you want your car to run exactly as it did off the assembly line, these are the best spark plugs for subaru crosstrek.

SYKRSS SILZKAR7B11 Iridium Platinum Spark Plugs 4 Pack – Compatible with Subaru Outback Legacy 2013-2017 2.5L/2498cc, Forester 2011-2018 2.5L/2498cc, Crosstrek, Impreza, XV Crosstrek 2.0L Engine

The SYKRSS plugs feature an advanced iridium-platinum construction, offering a high degree of wear resistance combined with exceptional ignition strength. One of the biggest advantages of these plugs is that they come pre-gapped to 1.0-1.1mm (0.039”-0.043”), eliminating the tricky requirement of precisely gapping the plugs yourself—a major benefit considering the tight working space of the Crosstrek engine bay. They are built to withstand extreme thermal stress, enhancing reliability and fuel efficiency.

Key features that stand out:
– Iridium Platinum Metal: Ensures stronger ignition and increased lifespan.
– Pre-Gapped Spark Plug: Ready for hassle-free installation right out of the box.
– OE Replacement: Meets or exceeds OEM standards (direct replacement for 93482).

Pros:
– Eliminates the need for manual gapping.
– Enhanced fuel efficiency and reduced carbon buildup.
– Strong customer support and quality assurance.

Cons:
– Brand recognition is lower compared to NGK or OEM.

Best for: DIY mechanics looking for a high-quality, pre-gapped, long-life plug solution.

Expert Opinion: For the average Crosstrek owner performing a home replacement, having the plugs correctly pre-gapped is a significant time and headache saver. The iridium-platinum blend provides excellent performance stability.

UF724 Ignition Coil Pack and Iridium Spark Plugs Set of 4 Compatible with Subaru Impreza Crosstrek Legacy Forester Outback 2013 2014 2015 2.0L 2.5L H4,Replace#,UF-710

This UF724 kit stands out by emphasizing the quality of its coil packs alongside the iridium plugs. The coil packs utilize German-imported high-purity copper windings and a silicon steel core, ensuring stable, high-voltage output crucial for efficient combustion. This pairing is designed not just to replace parts, but to optimize the engine, potentially improving fuel efficiency by 15%-20% and reducing common engine failures like lack of power or increased fuel consumption.

Key features that stand out:
– High-Quality Coil Construction: Utilizes German-imported copper windings and high-temperature epoxy resin.
– Iridium Spark Plug Technology: Promises a lifespan of 60,000-100,000 miles.
– Optimized MPG: Designed to improve engine fuel efficiency significantly.

Pros:
– Comprehensive performance upgrade for the ignition system.
– Focuses on stable high-voltage output from the coils.
– Precise ignition reduces carbon deposition.

Cons:
– Compatibility is limited to older Crosstrek/XV Crosstrek models (2013-2014 2.0L H4 GAS).

Best for: Owners of older models needing both improved coils and high-performance plugs simultaneously.

Expert Opinion: When looking for the best spark plugs for subaru crosstrek in the early model years, considering a full kit like this ensures the plugs are receiving the correct high-quality voltage they need to deliver that optimized fuel economy.

eosorssa Platinum Iridium Spark Plug (4Pcs) Fit for Subaru Forester Crosstrek 2011-2018, Legacy Outback 2013-2017, Impreza XV Crosstrek 2012-2016 (2.0L, 2.5L H4)

The eosorssa Platinum Iridium plugs offer a budget-friendly option without sacrificing the benefits of precious metal construction. Made from high-quality alloy and superior ceramic materials, they promise high strength and stability for a variety of compatible Subaru H4 engines, covering models from 2011 through 2018. They focus on providing superior ignition performance with sensitive ignition, meaning less wasted energy during the startup and driving cycle.

Key features that stand out:
– Platinum Iridium Construction: Combines two precious metals for durability and strong spark.
– Wide Compatibility: Fits many 2.0L and 2.5L H4 Crosstrek/XV Crosstrek models.
– Sensitive Ignition: Reduces unnecessary energy waste.

Pros:
– Highly durable construction materials.
– Excellent coverage for pre-facelift Crosstrek models.
– A strong value proposition compared to OEM.

Cons:
– Longevity expectations might be slightly lower than premium NGK options.

Best for: Crosstrek owners looking for reliable, high-quality platinum iridium performance on a tighter budget.

Expert Opinion: These offer an excellent middle ground. If you don’t want to pay the premium for an OEM plug but still want the material benefits of platinum and iridium, this is a very durable and reliable choice for the best spark plugs for subaru crosstrek.

Helpful Comparison Short Insights

When comparing these options, the main choice usually comes down to material and whether you need just the spark plugs or a complete ignition overhaul kit.

The NGK and A-Premium Double Iridium options focus purely on long-life spark plugs, with A-Premium offering a slightly longer mileage guarantee (up to 120,000 miles) thanks to their double iridium design. Both are excellent choices for newer (2018+) Crosstrek models, though NGK often provides the highest level of trust due to their existing OEM relationships.

If your Crosstrek is a 2017 model or older, you have many more fitment options, including the Genuine OEM Subaru plugs or the kits from A-Premium and UF724. Purchasing a kit is advisable if you are experiencing rough idling, as the coil packs are often the culprit alongside the worn plugs.

For the DIYer, the SYKRSS plugs’ promise of being pre-gapped is a huge time-saver, avoiding potential installation errors, especially since the Crosstrek engine bay makes gapping challenging once installation begins.

Final Verdict

Choosing the best spark plugs for your Subaru Crosstrek depends heavily on your vehicle’s age and your maintenance goals.

The Best Overall Choice (Reliability and Performance):
If you own a newer (2018-2020) Crosstrek and prioritize longevity above all else, the 4 pc NGK Laser Iridium Spark Plugs remain the most consistently recommended choice by experts due to their proven OEM quality and impeccable durability.

The Best Value Option (Kit Upgrade):
For older models (2013-2017) showing signs of ignition fatigue, the A-Premium Set of 4 Ignition Coil Pack and Iridium Spark Plugs provides the most comprehensive solution. Replacing both plugs and coils ensures that you address every point of potential ignition failure in one go, offering excellent long-term value.

The Best for Peace of Mind (OEM Purist):
If your vehicle falls within the 2011-2017 window, sticking with the Genuine OEM Subaru Spark Plugs is the safest path, guaranteeing factory-exact performance and fitment without any guesswork.

Best Spark Plugs For Subaru Crosstrek FAQ

Q1: How often should I replace the spark plugs in my Crosstrek?

A: For modern Subaru Crosstrek models using iridium or platinum plugs (like the ones reviewed here), the replacement interval is typically 100,000 to 120,000 miles. However, if you notice symptoms like sluggish acceleration, poor fuel economy, or a rough idle, replacement might be needed sooner. Always check your specific owner’s manual for the exact recommended service schedule.

Q2: Is changing spark plugs on the Subaru Boxer engine more difficult than other cars?

A: Yes, due to the unique design of the horizontally opposed Boxer engine, the spark plugs are mounted on the side of the engine, deep in the engine bay. This makes access much tighter than in standard inline engines. It often requires removing or loosening components like the air box or battery to gain necessary clearance, making the job more time-consuming for the average DIYer.

Q3: Do I need to gap the iridium spark plugs before installing them?

A: Many high-quality iridium plugs, especially NGK and the SYKRSS pre-gapped options, come factory-set to the correct specification for your Subaru. It is generally recommended not to attempt gapping thin-wire iridium plugs, as you can easily damage the delicate tip. If you must check the gap, do so very carefully, and always confirm the correct specification (often around 0.032″) for your specific model year.

Q4: What is the difference between Iridium and Double Iridium spark plugs?

A: Standard Iridium plugs use iridium on the center electrode tip. Double Iridium plugs use iridium on both the center electrode and the ground electrode. This dual application provides superior resistance to thermal erosion and wear, often leading to a longer service life and more stable ignition performance over high mileage.

Q5: Will new spark plugs improve my Crosstrek’s gas mileage?

A: If your existing plugs are old and worn, installing new best spark plugs for subaru crosstrek will absolutely restore and potentially improve your fuel efficiency. Worn plugs cause weak, inconsistent sparks, leading to incomplete fuel combustion (misfires), which wastes gas. New plugs ensure precise ignition, optimizing MPG back to factory specifications.

Q6: What are the main signs that my Crosstrek needs new spark plugs?

A: Look out for several common signs of ignition failure: Engine misfires (a noticeable pause or jerk during acceleration), engine hesitation, difficulty starting, a significant drop in gas mileage, or the Check Engine Light illuminating (often registering codes related to misfiring cylinders).