You rely on consistent ignition for smooth starts, efficient fuel use, and steady engine performance. Choosing the right spark plugs (and in one case, a matched ignition coil pack) for your Lexus ES 350 helps you avoid misfires, restore fuel economy, and keep maintenance costs down.
In this guide you’ll find reliable, vehicle-specific options that fit the ES 350’s 3.5L V6 and deliver a balance of longevity, performance, and value. Pick the right set and you’ll likely drive smoother and spend less on service visits.
Top Picks
| Category | Product | Score |
|---|---|---|
| 🏆 Best Overall | AEagle Ignition Coil Pack + Iridium Spark Plugs (6 Sets) — UF487 | 92/100 |
| 💰 Best Value | 6 pc NGK Iridium IX Spark Plugs Compatible with Lexus ES350 2007–2018 | 88/100 |
| ⚡ Best Performance Upgrade | 6 pc DENSO Iridium Power Spark Plugs Compatible with Lexus ES350 2007–2016 | 76/100 |
How We Picked
You want parts that fit, last, and deliver consistent performance. We focused on: compatibility — verified fit for Lexus ES 350 3.5L V6 model years listed; material and longevity — iridium/platinum center electrodes for longer life and stable gaps; included components — whether you get a full set of plugs and, in one option, matched ignition coils; real-world feedback — user ratings and reviews for reliability and ease of installation; value — price vs.
expected service life and whether the kit reduces the chance you’ll need shop time. We also weighed brand reputation, gap specification (factory spec is 0.039″–0.043″ / 1.0–1.1 mm), and any notes about pre-gapping or installation requirements so you know what to expect when you install them.
AEagle Ignition Coils & Iridium Plugs (6-Pack)
You get a full set of six ignition coils plus six iridium spark plugs designed as a direct fit for Lexus ES350 (2007–2016) and a bunch of Toyota/Lexus siblings. If you do your own maintenance, this kit is handy: the iridium plugs aim to last longer and improve ignition efficiency, while the coils are built with heat-resistant housings and copper windings for consistent sparks.
For daily driving it smooths out misfires and keeps idle steady; for long trips or before a state inspection it’s a sensible refresh to avoid starting trouble. Installation is straightforward if you follow the fitment check and have basic tools, and the one-year warranty gives you a safety net. If you want a practical, all-in-one replacement that covers an entire V6 bank, this is a reliable option to consider.
Pros and Cons
| Pros | Cons |
|---|---|
| ✅ All components included for a full six-cylinder replacement | ❌ OEM engine bolts are not included |
| ✅ Good build materials aimed at durability and heat resistance | ❌ Not an OEM-branded part (aftermarket product) |
| ✅ Iridium plugs offer better wear resistance and ignition consistency | ❌ You should verify exact fitment for your VIN before ordering |
| ✅ Direct-fit design for many Lexus and Toyota models |
What People Say
People mention that the kit arrives neatly organized and matches the listing, making swap-outs quick. A common note is that it’s a solid, complete set — just check that you have or can source OEM bolts if your car needs them.
Overall Sentiment: Positive
🗣️ BLAZER7526
Item has everything described in description and was organized well. Only with they had OEM bolts for engine
Ease Of Use
| Feature | Ease Level |
|---|---|
| Installation | Easy |
| Fitment Check | Moderate |
| Tools Needed | Minimal |
| Routine Replacement | Easy |
Versatility
Fits a wide range of Lexus and Toyota models (ES350, IS350, RX450h, Camry, Highlander, RAV4, Sienna, Venza, Avalon), so you can use the same kit across several vehicles or as a go-to spare for a family garage.
Key Benefits
- Complete kit: 6 ignition coils and 6 iridium spark plugs for a full bank replacement
- Direct-fit for Lexus ES350 and many Toyota models — reduces compatibility guesswork
- Iridium plugs for improved ignition efficiency and longer service life
- Coils designed with heat-resistant exterior and high-conductivity copper interior
- One-year warranty for added peace of mind
Rating: 4.8 (total: 12+)
NGK Iridium IX (6-Pack)
You get a full set of six iridium-core spark plugs that are listed as compatible with Lexus ES350 3.5L V6 models from 2007 through 2018. In everyday driving they’ll help keep idle smooth and ignition consistent, and they can be the sort of routine refresh you do before a long trip or an inspection to avoid misfires. If you do your own maintenance, these are the kind of direct-fit replacements that make a bank swap straightforward — just double-check fitment for your VIN and use the right torque and gap (this listing notes a 0.044″ gap).
I’d reach for these when you want dependable, long-life plugs without overcomplicating the job.
Pros and Cons
| Pros | Cons |
|---|---|
| ✅ Full six-pack for a complete bank replacement | ❌ Aftermarket seller — verify fitment for your exact VIN before ordering |
| ✅ Iridium material for better wear resistance and longevity | ❌ May require standard spark plug tools and proper torque/gap attention |
| ✅ Straightforward direct-fit listing for ES350 2007–2018 | ❌ Limited to specified model years and engine — not a universal plug |
| ✅ Includes packaging and hardware for a tidy install |
What People Say
People point out that these arrive as a full six-pack and are listed as direct replacements for ES350 3.5L V6 model years 2007–2018. The common take is that they’re an easy, reliable swap when you want to refresh all plugs and reduce the chance of rough idle or misfires.
Overall Sentiment: Positive
🗣️ Product Listing
This 6 pack NGK Iridium IX Spark Plug is compatible with Lexus ES350 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007 3.5L V6
🗣️ Feature Bullets
Direct replacement auto parts; Includes original packaging and hardware; Genuine NGK Parts
Ease Of Use
| Feature | Ease Level |
|---|---|
| Installation | Easy |
| Fitment Check | Moderate |
| Tools Needed | Minimal |
| Routine Replacement | Easy |
Versatility
Designed specifically for the ES350 3.5L V6 (2007–2018). Great if you own one of those model years or keep a spare kit in a home garage, but it’s not a one-size-fits-all plug for other engines.
Key Benefits
- Complete six-pack sized for a V6: replace the whole bank at once
- Iridium core for improved longevity and consistent sparking
- Direct-fit replacement aimed at matching OEM specs
- Includes original packaging and hardware for neat installation
- Factory gap spec for ES350: 0.039″–0.043″ (1.0–1.1 mm)
Rating: 4.8 (total: 17+)
DENSO Iridium Power (6-Pack)
You get a six-pack of DENSO Iridium Power plugs listed for Lexus ES350 3.5L V6 models from 2007–2016. In everyday driving they help keep idle steady and ignition consistent, and the iridium tip and U-groove design are meant to deliver stronger, longer-lasting sparks under higher temperatures. These work well as a routine refresh before a long trip or if you want a bit more responsiveness while keeping OEM-style fitment. Do check the gap and torque as part of installation—some users found they needed minor adjustment before fitment.
If you want a performance-minded direct replacement that’s built for longevity, these are a solid pick.
Pros and Cons
| Pros | Cons |
|---|---|
| ✅ Complete six-pack for a full bank replacement | ❌ Some units may not come pre-gapped — you may need to check/adjust gap |
| ✅ Iridium construction for improved wear resistance and spark consistency | ❌ Aftermarket seller — confirm exact fitment for your VIN before ordering |
| ✅ Designed for high-temperature performance | ❌ Limited to the specified ES350 3.5L V6 model years |
| ✅ Listed as direct replacements for ES350 3.5L V6 (2007–2016) |
What People Say
Buyers note the plugs fit ES350 engines well and run reliably — several reviewers called them ready to install and praised the build quality. A few mention you should verify and, if needed, adjust the gap before fitting.
Overall Sentiment: Positive
🗣️ hector avila
Product works as it should really good quality product it’s compatible to oem lexus es350 plugs
🗣️ lyrical
Highly recommend for the Lexus ES350. They do the job perfectly.
Ease Of Use
| Feature | Ease Level |
|---|---|
| Installation | Easy |
| Fitment Check | Moderate |
| Pre-Gap Check | Moderate |
| Tools Needed | Minimal |
| Routine Replacement | Easy |
Versatility
Made specifically for Lexus ES350 3.5L V6 model years 2007–2016. Great if you drive one of those cars or keep a spare kit, but not a universal plug for unrelated engines.
Key Benefits
- Six-pack sized for a V6 so you can replace the whole bank at once
- Iridium 0.4 mm center electrode for stronger, longer-lasting sparks
- Tapered tip and U-groove ground electrode for improved ignition energy
- Designed to handle very high combustion temperatures for durability
- Direct-replacement form factor aimed at matching OEM fitment
Rating: 4.0 (total: 9+)
FAQ
Which Spark Plugs Are Best For My Lexus ES350?
You have three practical choices depending on what you want: the NGK Iridium IX plugs are a reliable OEM-style replacement known for long service life and consistent performance; the DENSO Iridium Power plugs are aimed at drivers who want a small center electrode and a performance upgrade with a very fine spark; the AEagle Ignition Coil Pack + Iridium Spark Plugs kit gives you a convenient direct fit solution that replaces both coils and plugs at once for models like the ES350 2007–2016. You should verify fitment for your exact year and engine before you buy and prioritize Iridium or other high-grade electrode materials for longevity.
How Often Should You Replace Spark Plugs And When Should You Check Ignition Coils?
You should plan on replacement intervals around 60,000–100,000 miles for most iridium plugs, but always check your owner’s manual for the factory recommendation. Inspect plugs and coils sooner if you experience misfires, rough idle, hard starts, reduced fuel economy, or a check engine light.
The ES350 factory gap is 0.039″–0.043″ (1.0–1.1 mm), so confirm the gap before installation. If a coil is failing or you see misfire codes, replacing coils together with plugs (for example with an AEagle kit that includes both) can eliminate repeated diagnostics.
Can You Install These Spark Plugs Yourself And What Should You Watch For?
Yes, you can install them yourself if you have a spark plug socket, ratchet, and a torque wrench and you follow a few precautions: confirm the correct part numbers and vehicle fitment, check whether the plugs arrive pre-gapped (many aftermarket plugs are not) and set the gap to 0.039″–0.043″ (1.0–1.1 mm) if required, avoid cross-threading when starting the plug by hand, tighten to the factory torque (typically around 13 ft-lb / 18 N·m—use the factory spec for your engine), and avoid applying anti-seize unless the manufacturer explicitly allows it. A light dab of dielectric grease on the boot can help with reassembly. If you run into hard-to-reach coils, persistent misfires, or you don’t have a torque wrench, let a professional handle the job.
What Buyers Prefer
You’ll focus on fitment, longevity, and overall value when choosing between AEagle Ignition Coils & Iridium Plugs, NGK Iridium IX, and DENSO Iridium Power — pick AEagle if you want a convenient coil-and-plug bundle and a budget-friendly replacement, NGK if you prioritize proven long-life performance and stronger throttle response, or DENSO if you want OEM-level compatibility and a smooth idle. Ultimately you balance durability, ignition stability, and cost to decide which suits your Lexus ES 350 best.
Wrapping Up
If you want a one-stop solution that addresses ignition and spark at once, the AEagle Ignition Coil Pack + Iridium Spark Plugs offers direct fit, a full set of coils and plugs, and strong user ratings — a great choice if you suspect coil-related issues or want a complete refresh (Check price on Amazon). If you only need new plugs and want trusted performance at a lower cost, NGK Iridium IX is an excellent value (Check price on Amazon) with reliable longevity and broad compatibility.
For a performance-oriented option with a very fine center electrode, DENSO Iridium Power can offer crisper ignition at a competitive price (Check price on Amazon), but check gap and installation notes before you buy. Choose based on whether you need coils plus plugs, the longevity you expect, and how hands-on you plan to be during installation.
| Ignition Coil Pack + Iridium Spark Plugs for Lexus ES350 2007-2016 | 6 pc NGK Iridium IX Spark Plugs compatible with Lexus ES350 3.5L V6 2007-2018 | 6 pc DENSO Iridium Power Spark Plugs compatible with Lexus ES350 3.5L V6 2007-2016 | |
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| Rating | 4.8/5 (12 reviews) | 4.8/5 (17 reviews) | 4.0/5 (9 reviews) |
| Core Material | Iridium | Iridium | Iridium |
| Item Weight | 4.37 Pounds | 11.5 ounces | 10.6 ounces |
| Compatibility | Compatible with Lexus ES350 2007-2016, IS350 2006-2015, RX450h 2010-2015, and several Toyota models. | Compatible with Lexus ES350 2007-2018 3.5L V6, featuring a gap of 0.039–0.043 inches. | Compatible with Lexus ES350 from 2007-2016, features a factory gap of 0.039–0.043 inches and performance enhancements. |
| Buy Now | Buy Now | Buy Now |
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