7 Best Spark Plugs For 2015 Nissan Altima

You depend on your 2015 Nissan Altima to be dependable and efficient. Replacing worn spark plugs is one of the simplest maintenance tasks that can deliver noticeable benefits: improved fuel economy, steadier idle, easier starts and fewer misfires.

This list focuses on plugs that fit the 2015 Nissan Altima 2.5L (most listings specify the OE-style 0.044″ gap and many reference the 105,000 mi recommended service interval), so you can quickly compare materials, price and real-world feedback to choose the right option for your driving needs.

Top Picks

How We Chose These Spark Plugs

You want spark plugs that fit your Altima’s 2.5L engine, provide consistent ignition, and last a long time without driving up maintenance costs. We prioritized: compatibility (explicit fit for 2015 Altima 2.5L and the common 0.044″ gap), electrode material (iridium, ruthenium and platinum rated for longer life), verified customer feedback and ratings, price per set and overall value, and availability. We also considered real-world notes about drivability (idle smoothness and highway performance) and whether a product matches OE recommendations like the extended service interval some listings reference. If you care about longevity and fewer replacements, iridium or ruthenium options score higher; if you need the lowest upfront cost, there are reasonable double-iridium and aftermarket sets that balance price and fitment.

Finally, you should double-check torque specs and gap when installing to avoid issues.

NGK Laser Iridium Spark Plugs (4 pc)

If you drive a 2015 Nissan Altima 2.5L, these NGK Laser Iridium plugs are the kind of simple swap that makes your car feel more settled. They’re a direct replacement designed to match OE specs (0.044″ gap) so you won’t be guessing on fitment, and the iridium tip is built for longer life and consistent ignition.

For daily commuting you’ll notice reliable starts and steady idle; on longer drives or highway runs reviewers reported a smoother cruise. They come as a 4-pack with original packaging and you can check fitment with Amazon’s Confirmed Fit tool.

If you want an easy upgrade that stays out of your way, these are worth considering.

What People Say

Buyers say the plugs fit perfectly and deliver a noticeable improvement in smoothness on the highway, with reliable performance and easy fitment for the Altima 2.5L.

Overall Sentiment: Positive

Ease Of Use

Durability

Built with an iridium tip for extended life; manufacturer notes an OE-recommended service interval of around 105,000 miles, so you shouldn’t be swapping these often.

Key Benefits

• Direct OEM-compatible fit for 2.5L L4 (2013–2018)
• Iridium tip for longer life and consistent spark
• Comes as a 4-pack with original packaging
• Reported smoother freeway cruising and reliable starts

Rating: 5.0 (total: 14+)

Buy Now

RLP Double Iridium Spark Plugs (4 pc)

If you drive a 2015 Nissan Altima 2.5L, these RLP double iridium plugs are an easy, practical swap that should feel familiar right away. They’re built with an iridium center and a platinum ground electrode for better conductivity and a longer lifespan, and the 0.043″ gap is specified for a direct-fit replacement for your engine. For day-to-day driving you can expect reliable starts and steady idling; on longer trips the improved ignition can help the engine run a bit smoother and burn fuel more fully. They come as a set of four, include a 12-month warranty, and replace OEM part numbers like 94702 and DF6H-11A.

If you want a straightforward, longer-lasting plug that fits the Altima without drama, these are worth a look.

What People Say

Buyers say these plugs fit the 2015 Altima perfectly, arrive well packaged, and are straightforward to install if you’re comfortable working under the hood. Performance and fit get consistently positive mentions.

Overall Sentiment: Positive

Ease Of Use

Durability

Built with an iridium center and platinum ground electrode for corrosion resistance and stable ignition. Manufacturer lists a designed lifetime of around 60,000 kilometers, so you shouldn’t be swapping them frequently.

Key Benefits

• Direct compatibility with Nissan Altima 2.5L (2013–2018) and Rogue 2.5L (2014–2020)
• Double iridium center and platinum ground for stable ignition and better conductivity
• 0.043″ gap and OEM-replacement numbers (94702, DF6H-11A, etc.) for easy fitment
• Designed life up to 60,000 kilometers and covered by a 12-month warranty
• Reported to improve combustion efficiency, aiding smoother idle and fuel burn

Rating: 5.0 (total: 2+)

Buy Now

NGK Ruthenium HX Spark Plugs (4 pc)

If you own a 2015 Nissan Altima 2.5L, these NGK Ruthenium HX plugs are the kind of straightforward swap that makes maintenance painless. You get a 4-pack branded as genuine NGK parts that drop in as direct replacements, with a preset 0.044″ gap so you don’t have to fiddle with measurements.

For daily driving they help keep starts quick and idle steady, and on longer trips they can contribute to a smoother-running engine and consistent combustion. They come in original packaging and include the hardware you need, so if you want a no-nonsense, reliable plug that fits your Altima without surprises, these are a solid pick.

What People Say

You’ll see buyers note that these arrive correctly packaged and fit Altima engines as expected, with several users saying they work well in older Altima models and offer good value.

Overall Sentiment: Positive

Ease Of Use

Durability

NGK’s Ruthenium HX tips are engineered for extended service life and consistent spark performance, so you can expect reliable operation over typical spark-plug service intervals.

Key Benefits

• Direct compatibility with Nissan Altima 2.5L (2007–2018)
• Genuine NGK Ruthenium HX design for stable ignition and longer service life
• Preset 0.044″ gap for easy, direct fit without extra adjustment
• Includes original packaging and necessary hardware for a tidy install
• Sold as a 4-pack so you can replace all cylinders at once

Rating: 4.8 (total: 8+)

Buy Now

TAUTOY 9029 Double Iridium Spark Plugs (4 pc)

If you drive a 2015 Nissan Altima 2.5L, these TAUTOY double iridium plugs are the kind of parts that let you do a tidy tune-up without fuss. They arrive as a 4-pack that’s listed to replace OEM numbers like 9029 and 9091901281, so matching them to your engine is straightforward. In daily use you’ll notice steady starts and a smooth idle; on longer trips they help keep combustion consistent which can make the car feel more responsive. TAUTOY emphasizes quality control (TS16949) and even offers a 1-year warranty, so if you want an affordable alternative that still leans on better-than-basic materials, these are worth considering.

What People Say

You’ll see buyers highlight reliable fitment and build quality — several reviewers say the plugs fit their Nissan with no hassles and report steady performance and durability in regular driving.

Overall Sentiment: Positive

Ease Of Use

Durability

Double iridium electrodes and strict factory testing mean these plugs are designed to resist wear and oxidation, giving you stable performance across typical service intervals.

Key Benefits

• Direct compatibility with Nissan Altima 2.5L (2007–2016) and several other Nissan models
• Double iridium tips for improved wear resistance and consistent spark
• Manufactured under TS16949 quality controls with 100% function and leakage testing
• Sold as a 4-pack so you can replace all cylinders at once
• Includes a 1-year warranty for added peace of mind

Rating: 4.7 (total: 9+)

Buy Now

X4XZ 9029 Double Iridium Spark Plugs (4 pc)

If you work on your own car or just want a no-fuss tune-up, these X4XZ 9029 double iridium plugs are an easy swap that aim to mimic OEM fitment. You’ll notice crisper starts and a steadier idle on daily drives, and on longer trips they help keep combustion consistent so the engine feels more responsive.

They come as a 4-pack so you can replace all cylinders at once, and the manufacturer claims a long service life — handy if you’d rather skip frequent changes. In short, if you want iridium-level durability and straightforward compatibility for a 2015 Altima 2.5L, these are worth considering.

What People Say

You’ll see owners mention straightforward fitment and steady performance — many point to better cold starts and a smoother idle after swapping to these plugs. The long-life iridium tips are often highlighted for lasting through longer service intervals.

Overall Sentiment: Positive

Ease Of Use

Durability

Built with double iridium electrodes and factory testing, these plugs are made to resist wear and oxidation; the manufacturer cites up to 100,000 km of service life under normal conditions.

Key Benefits

• Direct compatibility with Nissan Altima 2.5L (2007–2015) and many Nissan/Infiniti models
• Double iridium tips for improved wear resistance and more consistent spark
• Manufacturer claims up to 100,000 km service life for stable performance
• Sold as a 4-pack so you can replace all cylinders during a single service
• Designed to improve cold-start performance and smoother idle

Rating: 4.4 (total: 329+)

Buy Now

A-NAFTULY Double Iridium Spark Plugs (4 pc)

If you’re swapping plugs on a 2015 Altima 2.5L, these A-NAFTULY double iridium pieces are designed to be a straightforward, no-nonsense replacement. You get a full 4-pack so you can change all cylinders in one go, and the fine‑wire iridium tip aims to give crisper starts, steadier idle and a touch better fuel efficiency on daily runs.

On highway trips they help keep combustion consistent so the engine feels more responsive under load. The plugs come pre-specified to the common gap and the listing promises durable iridium tips plus a 12-month warranty, so they’re a practical choice whether you do the install yourself or hand them to your mechanic.

If you want reliable OEM-style fitment and an upgrade over basic copper plugs, these are worth considering for routine maintenance.

What People Say

You’ll notice owners point out straightforward fitment and a more consistent idle after swapping in iridium plugs. Folks appreciate the claimed fuel efficiency gains and the idea that iridium tips last longer than standard plugs, especially if you prefer longer service intervals.

Overall Sentiment: Positive

Ease Of Use

Durability

Built with fine‑wire iridium center electrodes that are far more resistant to wear and heat than basic materials; the listing emphasizes iridium’s higher melting point and long service life, backed by a 12‑month warranty.

Key Benefits

• Direct compatibility with Nissan Altima 2.5L (2013–2018) and Nissan Rogue 2.5L (2014–2020)
• Fine‑wire double iridium tips for improved ignitability and wear resistance
• Sold as a 4-pack so you can replace all cylinders at once
• Pre-set gap of 0.044″ suitable for the listed engines
• 12-month worry‑free warranty and manufacturer support

Rating: 4.4 (total: 15+)

Buy Now

A-Premium Iridium Platinum Spark Plugs (Pack Of 6)

If you’ve got the V6 3.5L in a 2015 Altima, these A‑Premium iridium‑tipped plugs are built to be a straightforward swap that aims to keep your engine running smoothly for the long haul. They come pre‑specified with a 0.044 in gap and a platinum core with an iridium tip, which is the combo people reach for when they want crisper starts, steadier idle and fewer plug changes over time.

For daily driving you’ll likely notice a more consistent idle and reliable starts; on longer highway runs they help combustion stay even so the engine feels responsive under load. They’re sold as a 6‑pack so you can change every plug in one session, whether you do the job yourself or hand the plugs to your mechanic. If you want OEM‑style fitment for the V6 Altima and a plug designed for longevity rather than quick fixes, these are a practical, no‑nonsense choice.

What People Say

People who switch to these often mention easy fitment and that the plugs help stabilize idle and starting. Owners like the pre‑gapped setup and the built‑for‑longevity iridium/platinum combo, especially if you prefer fewer maintenance visits.

Overall Sentiment: Positive

Ease Of Use

Durability

Built with an iridium center electrode and a platinum core to resist wear and heat; listing suggests service intervals of 80,000–100,000 miles for long life.

Key Benefits

• Direct compatibility with Nissan Altima 2007–2018 V6 3.5L (including 2015 V6 models)
• Iridium center electrode with a platinum core for improved ignitability and wear resistance
• Pre‑set gap of 0.044 in for common V6 applications
• Sold as a 6‑pack so you can replace all cylinders at once
• Engineered for long service intervals (recommended 80,000–100,000 miles)

Rating: 4.4 (total: 272+)

Buy Now

FAQ

How Do I Choose The Right Spark Plugs For My 2015 Nissan Altima?

You should start by confirming your engine is the 2.5L L4 and checking the exact fitment or OEM part numbers for your VIN. Check Compatibility first — many replacement sets list compatibility specifically for the 2013–2018 Altima 2.5L and will note the required gap (commonly 0.044″).

Decide on plug material: iridium and ruthenium options offer longer lifespan and more consistent performance than standard copper types. Look for plugs described as OE equivalent design and read customer feedback on fit and reliability.

Also check how many plugs come in the pack (most Altima 2.5L replacements are sold in 4‑packs) and verify the manufacturer part number (examples you may encounter include 94702, DILKAR6A11, 9029, or manufacturer listings like LKAR7BIX variants). Finally, confirm the recommended service interval for the chosen plug; some OE-equivalent iridium/ruthenium plugs list long intervals (for example the OE recommendation is often around 105,000 miles for certain designs).

How Should I Install And Maintain Spark Plugs To Keep My Altima Running Well?

You should work on the engine only when it’s cool, remove ignition coils carefully, and inspect coil boots and wiring while the plugs are out. Always replace all four plugs at the same time so your ignition system stays balanced.

Check and set the plug gap to the specified 0.044″ if required, and install plugs by hand to avoid cross‑threading before using a torque wrench — torque to the OEM spec listed in your service manual rather than guessing. Avoid applying anti‑seize unless the plug manufacturer explicitly recommends it, because anti‑seize can change the effective torque.

A small dab of dielectric grease on the inside of the ignition boot can help prevent moisture intrusion and make future removal easier. After installation, monitor your car for misfires, rough idle, hard starting, or a sudden drop in fuel economy — those are signs something may need rechecking or that coils may need replacing.

Are Iridium Or Ruthenium Spark Plugs Worth It For The 2015 Altima?

Yes, in most cases you’ll see tangible benefits from iridium or ruthenium plugs: they typically hold their gap longer, provide a more consistent spark, and can improve idle smoothness and long‑term reliability compared with basic plugs. If you plan to keep the car for many miles or prefer longer service intervals, iridium or ruthenium is a sensible choice — many replacement options on the market for the 2015 Altima advertise OE‑equivalent designs and long recommended intervals.

If your engine has very high mileage or existing ignition issues, also inspect coils and fuel/air systems because plugs alone won’t fix problems caused by worn coils, fouled injectors, or vacuum leaks. Choose a reputable brand and match the exact fitment and gap to your Altima for the best results.

Customers Top Picks

You’ll typically weigh longevity, ignition performance, and value when choosing between these options — customers pick NGK Laser Iridium for its smooth idle and sharper throttle response, RLP Double Iridium when they want extra durability at a lower price, and NGK Ruthenium HX for long-term stability and minimal maintenance. In short, you decide based on how much life and performance you need for your 2015 Altima versus how much you want to spend.

Wrapping Up

You don’t need to overcomplicate the decision. If you want the longest service life and the smoothest results, the NGK Laser Iridium (Sixity Auto) is our top pick for overall balance of performance and reliability.

If you’re focused on upfront cost without sacrificing proper fit, the RLP 94702 Double Iridium set offers excellent value. No matter which option you choose, make sure to confirm the 0.044″ gap, follow the recommended torque, and keep records of when you replace the plugs so you can track the OE-recommended service intervals. Replacing spark plugs at the right time helps you maintain fuel economy, smooth acceleration and reliable starts for many miles to come.

Product	Image	Rating	Manufacturer	Compatibility	Core Material
4 Pc NGK Laser Iridium Spark Plugs		5.0/5 (14 reviews)	Sixity Auto	Nissan Altima 2013-2018, 2.5L L4	Iridium
94702 Double Iridium Spark Plugs		5.0/5 (2 reviews)	RLP	Nissan Altima 2013-2018, Nissan Rogue 2014-2020	Iridium
4 Pc NGK Ruthenium HX Spark Plugs		4.8/5 (8 reviews)	Sixity Auto	Nissan Altima 2007-2018, 2.5L L4	Ruthenium
9029 DILKAR6A11 Spark Plugs		4.7/5 (9 reviews)	TAUTOY	Nissan Altima 2007-2016, Cube 2009-2014, NV200 2013-2014	Iridium
9029 Double Iridium Spark Plug		4.4/5 (329 reviews)	X4XZ	Multiple models including Nissan Altima 2007-2019, Versa, Sentra, Rogue	Iridium
Double Iridium Spark Plugs 4 Pack		4.4/5 (15 reviews)	A-NAFTULY	Nissan Altima 2013-2018, Nissan Rogue 2014-2020	Iridium
A-Premium Iridium Platinum Spark Plugs		4.4/5 (N/A reviews)	A-Premium	Nissan Altima 2007-2018 and other Nissan/Infiniti models	Platinum

This Roundup is reader-supported. When you click through links we may earn a referral commission on qualifying purchases.