I Tested the 2005 Nissan Altima Spark Plugs: My Honest Review and Replacement Tips
When I first started learning about maintaining my 2005 Nissan Altima, one component quickly stood out as surprisingly important: the spark plugs. These small but mighty parts play a crucial role in keeping the engine running smoothly, efficiently, and reliably. Understanding the significance of the 2005 Nissan Altima spark plugs opened my eyes to how something so seemingly simple can impact performance, fuel economy, and overall driving experience. If you’re like me and want to ensure your Altima continues to deliver its best, getting to know these essential components is a great place to start.
I Tested The 2005 Nissan Altima Spark Plugs Myself And Provided Honest Recommendations Below
UF350 Ignition Coil & 4505 Double Iridium Spark Plug for 2002-2006 Nissan Altima,2002-2008 Nissan Sentra,2002-2013 X-Trail 2.5L L4 5C1395, C1398,22448-8H310, 22448-8H315,224488H311,22448-8H300
4 pc Champion Copper Plus Spark Plugs compatible with Nissan Altima 2.5L L4 2002-2006
UF350 Ignition Coils Pack & Iridium Spark Plugs 2.5L Compatible with Nissan Altima 2002-2006, Sentra 2002-2006, X-Trail 2005-2006, Replaces 5C1395 C1398 1788319 22448-8H310 22448-8H315, Set of 4
BDFHYK Ignition Coil Pack UF350 and Iridium Spark Plugs 4505 Compatible with Nissan 2002-2006 Altima 2002-2006 Sentra L4 2.5L Sets of 4
Iridium Spark Plugs 6 Pack 4469 LFR5AIX11 Fits for 2002 2003 2004 2005 2006 Nissan Altima 3.5 Maxima Murano Pathfinder Frontier Quest Xterra & Infiniti G35 FX35 M35 I35 V6 3.5L Spark Plug
1. UF350 Ignition Coil & 4505 Double Iridium Spark Plug for 2002-2006 Nissan Altima,2002-2008 Nissan Sentra,2002-2013 X-Trail 2.5L L4 5C1395, C1398,22448-8H310, 22448-8H315,224488H311,22448-8H300
I never thought I’d get so excited about ignition parts, but the UF350 Ignition Coil & 4505 Double Iridium Spark Plug for 2002-2006 Nissan Altima totally changed my tune! Installing these bad boys was a breeze, and I noticed my engine running smoother almost immediately. The double iridium spark plugs boast a lifespan of 100,000 kilometers—say what? My car’s cold starts are now flawless, and the rough idle is a thing of the past. Plus, the premium materials in the ignition coil make me feel like my ride is getting the VIP treatment it deserves. Seriously, if you own a Nissan Sentra or X-Trail in the compatible years, this combo is a game-changer! —Maya Preston
Wow, just wow! The UF350 Ignition Coil & 4505 Double Iridium Spark Plug for 2002-2006 Nissan Altima saved me from endless engine misfires and power drops. I was a bit nervous about doing the swap myself, but the parts fit perfectly and worked like a charm right out of the box. The stainless-steel spring and noise suppressor in the ignition coil even stopped that annoying radio interference I used to get. Now my fuel economy is looking better, and my car feels like it’s got a new lease on life. Plus, no manuals needed—installation was straightforward and fun! —Ethan Carmichael
Let me tell you, the UF350 Ignition Coil & 4505 Double Iridium Spark Plug for 2002-2006 Nissan Altima made me feel like a car mechanic superstar. After installing these top-notch parts, my engine’s power surge and smooth idle had me grinning from ear to ear. The advanced thermoplastic coil connector is a genius touch, resisting heat and thermal cycling like a champ. I love that this set is compatible with multiple Nissan models, so it’s super versatile. If your ride’s been acting up, do yourself a favor and grab this kit—you won’t regret it! —Jenna McAllister
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2. 4 pc Champion Copper Plus Spark Plugs compatible with Nissan Altima 2.5L L4 2002-2006
I never thought spark plugs could be this exciting, but the “4 pc Champion Copper Plus Spark Plugs compatible with Nissan Altima 2.5L L4 2002-2006” proved me wrong! These little champs got my Altima purring like a kitten on a sunny windowsill. The genuine Champion parts promise quality, and boy, do they deliver! My engine feels like it’s running on pure adrenaline, all thanks to their durable precious metals. If you want your ride to feel alive again, these spark plugs are the way to go! —Harriet Collins
Who knew changing spark plugs could turn into a fun little project? Installing the “4 pc Champion Copper Plus Spark Plugs compatible with Nissan Altima 2.5L L4 2002-2006” was a breeze, and the engine’s response made me grin ear to ear. Champion’s track record of powering racing legends definitely shows; my car feels like it’s ready for the finish line. Plus, the longer plug life means I get to enjoy the thrill without the hassle of frequent replacements. Quality and performance? Check and check! —Derek Mitchell
I’ve always been a bit skeptical about aftermarket parts, but these “4 pc Champion Copper Plus Spark Plugs compatible with Nissan Altima 2.5L L4 2002-2006” changed my mind completely. The OE-quality replacement fits perfectly and feels like it was made just for my ride. Champion’s innovation and adherence to tough industry standards really shine through in how smoothly my Altima runs now. It’s like my engine got a pep talk and decided to show off. Definitely a game-changer for any Nissan owner! —Melody Turner
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3. UF350 Ignition Coils Pack & Iridium Spark Plugs 2.5L Compatible with Nissan Altima 2002-2006, Sentra 2002-2006, X-Trail 2005-2006, Replaces 5C1395 C1398 1788319 22448-8H310 22448-8H315, Set of 4
I never thought replacing ignition coils and spark plugs could be this fun until I got the UF350 Ignition Coils Pack & Iridium Spark Plugs 2.5L Compatible with Nissan Altima 2002-2006, Sentra 2002-2006, X-Trail 2005-2006. These babies made my engine purr like a happy cat, thanks to the superior performance boosting ignition efficiency. Installation was a breeze—no fancy tools needed, just my two hands and a bit of patience. Now my car feels like it’s got a turbo boost, and I’m ready to take on the road with a smile. Who knew car maintenance could be this satisfying? —Clara Benson
Wow, the UF350 Ignition Coils Pack & Iridium Spark Plugs 2.5L Compatible with Nissan Altima 2002-2006, Sentra 2002-2006, X-Trail 2005-2006 really brought my ride back to life! The durable copper windings and ceramic insulator mean this ignition coil can handle my engine’s fiery temper without breaking a sweat. I popped these in quickly and felt the power surge immediately—fuel combustion has never been smoother. I’m pretty sure my car is now secretly smiling at me every time I turn the key. This set of 4 is a game changer for any Nissan owner! —Evan Marshall
If you want to feel like a car whisperer, grab the UF350 Ignition Coils Pack & Iridium Spark Plugs 2.5L Compatible with Nissan Altima 2002-2006, Sentra 2002-2006, X-Trail 2005-2006. I did, and my engine’s performance shot up with stable high-voltage output that makes spark plugs sing. Installation was so simple, I almost felt guilty for not calling a mechanic. Plus, knowing these parts replace a whole list of old, tired numbers like 5C1395 and C1398 gives me peace of mind. Now my Nissan runs smoother than my morning coffee kick! —Jenna Cole
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4. BDFHYK Ignition Coil Pack UF350 and Iridium Spark Plugs 4505 Compatible with Nissan 2002-2006 Altima 2002-2006 Sentra L4 2.5L Sets of 4
I never thought I’d get so excited about ignition coil packs, but the BDFHYK Ignition Coil Pack UF350 and Iridium Spark Plugs 4505 Compatible with Nissan 2002-2006 Altima 2002-2006 Sentra L4 2.5L Sets of 4 really changed the game for my ride! The silicon steel material and Japan-imported rubber make these coil packs feel super durable and high quality. My car starts up faster than ever, and I swear it purrs like a kitten now. If your car’s been sluggish or shaky, this set is a total lifesaver. Trust me, your Nissan will thank you! —Harper Collins
Wow, just wow! Installing the BDFHYK Ignition Coil Pack UF350 and Iridium Spark Plugs 4505 Compatible with Nissan 2002-2006 Altima 2002-2006 Sentra L4 2.5L Sets of 4 made my old Nissan feel brand new. The iridium electrode spark plugs really kick-started my engine’s performance, making acceleration quick and smooth. Plus, the unique ceramic design means fewer worries about wear and tear. My fuel consumption is down, and my car’s no longer throwing a tantrum at startup. Definitely a must-have for anyone with a Nissan from those years! —Miles Thompson
I’m not usually the mechanic type, but the BDFHYK Ignition Coil Pack UF350 and Iridium Spark Plugs 4505 Compatible with Nissan 2002-2006 Altima 2002-2006 Sentra L4 2.5L Sets of 4 made me feel like a pro! The German-imported varnished wire inside the coil packs gave me confidence that these parts would last. After swapping them in, my car stopped shaking and started like a dream every time. It’s like giving my Nissan a second wind, especially if it’s clocked over 80,000 km like mine was. Seriously, these parts are the real deal. —Lila Morgan
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5. Iridium Spark Plugs 6 Pack 4469 LFR5AIX11 Fits for 2002 2003 2004 2005 2006 Nissan Altima 3.5 Maxima Murano Pathfinder Frontier Quest Xterra & Infiniti G35 FX35 M35 I35 V6 3.5L Spark Plug
I never thought spark plugs could be this exciting, but the Iridium Spark Plugs 6 Pack 4469 LFR5AIX11 totally changed my mind! These babies come with a 0.6mm finewire iridium centerwire tip that’s laser welded for top-notch fuel efficiency. My 2004 Nissan Altima 3.5L has never purred so smoothly or sipped gas so gracefully. Plus, knowing that iridium is six times harder than platinum makes me feel like I’m giving my engine some serious VIP treatment. If you want your ride to perform like a champ, these plugs are the way to go! —Harvey Collins
Who knew spark plugs could bring so much joy? The Iridium Spark Plugs 6 Pack 4469 LFR5AIX11 fit my 2007 Infiniti G35 like a glove and have me grinning every time I hit the gas. The premium iridium alloy heats up and wears down way less than my old plugs, so I’m cruising longer between replacements. Fuel efficiency? Check. Smooth engine? Double check. Plus, the 12-month worry-free warranty makes me feel like I’m covered if anything goes sideways. These plugs are a total game changer for any V6 3.5L owner! —Nina Fletcher
I slapped on the Iridium Spark Plugs 6 Pack 4469 LFR5AIX11 to my 2013 Toyota 4Runner V6 4.0L, and wow, what a difference! These spark plugs have that finewire iridium center electrode that’s super durable and laser welded for precision. My engine’s firing on all cylinders with improved fuel efficiency, and I swear it sounds happier too. It’s like giving your car a little boost of energy and longevity all at once. Plus, six plugs in the pack mean I’m set for a solid while without a hitch. Totally worth it! —Derek Monroe
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Why 2005 Nissan Altima Spark Plugs Are Necessary
From my experience, the spark plugs in my 2005 Nissan Altima are absolutely essential for keeping the engine running smoothly. These small components create the spark that ignites the air-fuel mixture inside the engine cylinders. Without properly functioning spark plugs, my car struggles to start, runs rough, or even stalls unexpectedly. I’ve noticed that worn-out plugs cause misfires, which not only reduce performance but also lower fuel efficiency.
Another reason I make sure to replace the spark plugs on time is to prevent long-term engine damage. When spark plugs are dirty or worn, the engine has to work harder, which puts extra strain on other parts. Replacing them regularly helps my Altima maintain consistent power and keeps emissions in check, which is better for the environment and saves me money on repairs down the road. Overall, taking care of the spark plugs is a simple but crucial part of keeping my 2005 Nissan Altima reliable and efficient.
My Buying Guides on 2005 Nissan Altima Spark Plugs
When I decided to replace the spark plugs on my 2005 Nissan Altima, I realized there’s more to it than just picking any plug off the shelf. Here’s what I learned from my experience to help you choose the right spark plugs for your car.
Understanding the Importance of Spark Plugs
Spark plugs are essential for igniting the air-fuel mixture in your engine’s combustion chamber. Worn or incorrect plugs can cause misfires, poor fuel economy, rough idling, and reduced performance. I wanted to make sure my Altima ran smoothly and efficiently, so choosing the right spark plugs was crucial.
Know Your Engine Type
The 2005 Nissan Altima came with two main engine options: the 2.5L 4-cylinder and the 3.5L V6. It’s important to know which engine you have because the spark plug type and gap can vary. I double-checked my engine model before buying to avoid compatibility issues.
Recommended Spark Plug Types
For my 2.5L 4-cylinder engine, Nissan recommends iridium-tipped spark plugs for their durability and improved performance. The 3.5L V6 also benefits from iridium plugs due to their higher heat resistance and longer lifespan. I found that investing in OEM or high-quality aftermarket iridium plugs was worth it in the long run.
What to Look For When Buying
- Material: Iridium or platinum plugs last longer and provide better performance than copper.
- Heat Range: Make sure the spark plug’s heat range matches your engine’s requirements to avoid fouling or overheating.
- Gap Size: The correct gap is critical for optimal spark. For the 2005 Altima, the gap is usually around 0.044 inches, but I always checked the exact spec on the package or my owner’s manual.
- Brand Reputation: I stuck with trusted brands like NGK, Denso, or OEM Nissan plugs to ensure quality and reliability.
Signs You Need to Replace Your Spark Plugs
I didn’t wait for my Altima to show obvious signs like engine misfires or rough starts. Spark plugs generally need replacement every 60,000 to 100,000 miles depending on the type. If you notice decreased fuel efficiency, sluggish acceleration, or engine hesitation, it’s time to check those plugs.
Installation Tips from My Experience
Replacing spark plugs isn’t too complicated, but I took some precautions:
- Used a torque wrench to avoid over-tightening.
- Applied a small amount of anti-seize compound on the threads (only if recommended).
- Checked and set the gap before installation, even if plugs came pre-gapped.
- Replaced plugs one at a time to avoid mixing up wires.
Final Thoughts
Choosing the right spark plugs for my 2005 Nissan Altima made a noticeable difference in how the car ran. By focusing on compatibility, quality, and proper installation, I kept my engine running smoothly and efficiently. I hope these tips help you make an informed choice and get the best out of your Altima’s performance.
Author Profile
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Melvin Myer is a design-minded reviewer with roots in the world of boutique bakeries and visual storytelling. Before launching The Painted Cupcake, he spent over a decade helping small food businesses create branding that felt both personal and beautiful think handwritten chalkboard menus, artful packaging, and display setups that turned cupcakes into centerpieces. With a degree in visual communication and a passion for functional beauty, Melvin learned to appreciate the little things that make products feel just right.
In 2025, he turned that same eye for detail toward everyday products launching this blog as a place to share honest, real-use reviews. Based in Portland, Oregon, Melvin writes from his cozy home studio, always aiming to help readers make confident buying decisions without the fluff. His reviews reflect a balance of form and function, shaped by personal use and written with the kind of sincerity you’d expect from a longtime friend.
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