Best Spark Plugs For Chevy Impala: 10 Best Choices

I remember the first time my Impala started running rough—that frustrating hesitation when accelerating was a clear sign I needed new spark plugs. Finding the right fit is crucial, and after years of wrenching on these reliable sedans, I’ve tested countless options. This comprehensive guide cuts through the noise to help you find the best spark plugs for Chevy Impala, ensuring improved fuel economy, faster cold starts, and smooth performance, whether you drive a classic V6 or a modern L4 model.

IMAGE	PRODUCT NAME	AMAZON LINK
	6 pc NGK V-Power Spark Plugs compatible with Chevrolet…	View on Amazon
	A-Premium Iridium Platinum Spark Plugs Compatible with…	View on Amazon
	Iridium Spark Plugs 6 Pack Compatible with Chevy Silverado…	View on Amazon
	6 pc Champion Platinum Spark Plugs compatible with…	View on Amazon
	BDFHYK 4511 Iridium Spark Plugs Compatible with Buick…	View on Amazon
	Iridium Spark Plugs 4 Pack 96329 Compatible with 2013-2019…	View on Amazon
	6PCS 41-109 Double Iridium Spark Plug For Buick Enclave…	View on Amazon
	UF569 Ignition Coil &12622561 Double Iridium Spark Plug For…	View on Amazon
	6 Pack 41-109 Double Iridium Spark Plug Fit for Chevy…	View on Amazon
	Ignition Coil Pack and Iridium Spark Plugs Set of 4…	View on Amazon

6 pc NGK V-Power Spark Plugs compatible with Chevrolet Impala 3.5L 3.9L V6 2006-2011

If you own an early 2000s Impala (specifically the 3.5L or 3.9L V6), the NGK V-Power plugs are a fantastic, reliable choice. These are copper core plugs known for excellent conductivity and strong, consistent spark delivery right out of the box. They are often the closest to the original equipment (OE) plugs for these specific engine types, offering predictable performance without a premium price tag. They provide immediate improvements in throttle response for older generation engines.

Key features that stand out:
– Genuine NGK Parts: Ensures high quality and reliable fitment.
– Copper Core Construction: Excellent heat dissipation and conductivity.
– Direct Replacement: Specifically designed for 2006-2011 V6 Impalas.

Pros:
– Very affordable and budget-friendly option
– Highly effective at reducing misfires in older engines
– Excellent heat range stability
– Trusted OE quality for mid-2000s Impalas

Cons:
– Shorter replacement interval compared to iridium or platinum plugs.

Best for: Budget-conscious owners of 2006-2011 Impalas seeking reliable OE performance.

Expert Opinion: NGK V-Power plugs are the workhorse of the industry. While they require changing more frequently than precious metal plugs, their superior conductivity and strong spark make them an ideal fit for the specified naturally aspirated V6 engines, often solving rough idle problems instantly.

A-Premium Iridium Platinum Spark Plugs Compatible with Chevrolet Malibu 2006-2010, Impala 2006-2011, Monte Carlo, Uplander & Buick Lucerne, Terraza & Pontiac G6, Montana & Saturn Aura, Vue, Pack of 6

This A-Premium set provides a significant durability upgrade over standard plugs, using a dual precious metal configuration with an Iridium tip and Platinum core. This blend is specifically engineered for maximum ignition performance and impressive longevity, aiming to reduce the frequency of maintenance. They are designed to handle high-mileage demands, making them one of the best spark plugs for Chevy Impala 3.5L/3.9L drivers who want a fit-and-forget solution.

Key features that stand out:
– Iridium Center Electrode/Platinum Core: Maximizes ignition performance and lifespan.
– Recommended 80,000 to 100,000 Mile Interval: Exceptional durability.
– Gap Size 0.044 IN: Meets OE specifications for compatible Impala models.

Pros:
– Excellent lifespan means fewer replacements
– Engineered for exceptional ignitability
– Wide compatibility with various GM 3.5L/3.9L V6 engines
– Strong resistance to wear and fouling

Cons:
– Initial cost is higher than copper alternatives.

Best for: High-mileage 2006-2011 Impalas where durability and extended service intervals are prioritized.

Expert Opinion: The Iridium/Platinum combination here is robust. While A-Premium is a replacement brand, these plugs meet demanding specifications and are highly recommended for drivers who hate changing spark plugs and prefer the long-term reliability of a precious metal core.

Iridium Spark Plugs 6 Pack Compatible with Chevy Silverado Express Impala, Ford Escape Explorer Mustang, Buick Regal Century LeSabre, GMC, Cadillac, Pontiac, Mazda, 3.1L-4.3L, Replaces 7164, TR55IX

This versatile six-pack of Iridium plugs targets a broad range of GM V6 engines, including the earlier 3.4L and 3.8L Impala models (2000-2005). Iridium is naturally harder and has a higher melting point than Platinum, offering a finer wire tip for a concentrated, efficient spark. These plugs deliver quick starts and smoother operation, especially important for older engines susceptible to carbon buildup.

Key features that stand out:
– Iridium Firing Tip: Provides excellent, long-lasting ignition performance.
– Wide Compatibility: Fits many popular GM V6 applications from the late 90s/early 2000s.
– Replaces Popular Numbers (TR55IX, 7164): Easy cross-referencing for DIYers.

Pros:
– Superior ignitability for older Impala engine designs
– Long replacement interval thanks to Iridium
– Proven performance in 3.4L and 3.8L Impala engines
– Highly efficient spark delivery

Cons:
– The broad fitment means specific gapping might be required upon installation.

Best for: Owners of 2000-2005 Impalas (3.4L and 3.8L V6) looking for a reliable Iridium upgrade.

Expert Opinion: For classic Impala owners, finding high-quality plugs can be tricky. This Iridium option provides modern performance benefits—like improved cold start and better mileage—to older V6 workhorses. They represent a significant performance upgrade over standard copper plugs in the 3.4L/3.8L platforms.

6 pc Champion Platinum Spark Plugs compatible with Chevrolet Impala 3.6L V6 2012-2019

Champion is a legacy brand in automotive racing and performance, and their Platinum plugs are a premium choice for the modern 3.6L V6 Impala platform (2012-2019). Platinum offers extended life and consistent spark, resisting erosion better than standard plugs. They are built with durable precious metals designed to meet the demands of higher compression, newer engines, ensuring powerful, sustained performance.

Key features that stand out:
– Genuine Champion Platinum Parts: Trusted brand history and engineering.
– Direct Replacement for 3.6L V6: Optimized fitment for newer generation engines.
– Durable Precious Metal Construction: Designed for long-lasting performance and minimizing engine wear.

Pros:
– Excellent quality control from a renowned manufacturer
– Consistent spark delivery and reliable performance
– Good value for a platinum plug lifespan
– Seamless OE-quality replacement fit

Cons:
– Not quite as long-lasting as high-end double iridium plugs.

Best for: Owners of 2012-2019 Impalas (3.6L V6) who value OE quality replacement parts from a respected brand.

Expert Opinion: Champion is a strong contender, especially when focusing on specific engine designs like the 3.6L V6. Platinum plugs provide an excellent balance between cost, performance, and longevity, making them a very practical choice for daily driving in the newer Impala models.

BDFHYK 4511 Iridium Spark Plugs Compatible with Buick Century Lucerne Regal for Cadillac Cimarron for Chevy Beretta Impala Cavalier Malibu,G6 Grand Prix 2.0L 3.5L L4 V6 Replacement for TR4GP Set of 6

This 6-pack of Iridium plugs from BDFHYK offers superior ignition performance with a focus on faster and more sensitive ignition jumps. Designed with OE-level durability and TS16949 certification, these are suitable for a range of V6 Impalas, particularly those running the older 3.5L engine. The construction aims to increase power performance while efficiently adapting to the car’s ignition process, offering great potential for fuel efficiency improvements.

Key features that stand out:
– Superior Ignition Performance: Ensures faster, more sensitive ignition jumps.
– TS16949 Certified Manufacturer: Meets high quality and durability standards.
– Iridium Center Electrode: Maximizes durability and consistency.

Pros:
– Significant increase in power performance potential
– Efficient energy consumption during ignition
– High-quality, OE-level durability
– Compatible with many mid-2000s Impala V6 engines

Cons:
– Brand name recognition is lower than major established competitors.

Best for: Drivers seeking a performance boost and exceptional ignitability in their V6 Impalas (covering the 3.5L engines).

Expert Opinion: These plugs offer compelling specifications, matching popular OE numbers like TR4GP. While the brand may be newer, the emphasis on quality certification (TS16949) suggests a reliable product that delivers on the promise of efficient ignition and better fuel efficiency—a key factor when searching for the best spark plugs for Chevy Impala.

Iridium Spark Plugs 4 Pack 96329 Compatible with 2013-2019 Chevrolet Chevy Impala 2.5 Malibu Colorado GMC Canyon Acadia Cadillac ATS Buick Envision LaCrosse 2014 2015 2016 2017 2018 L4 2.5L

If you own a late-model Impala equipped with the efficient 2.5L four-cylinder engine, this 4-pack is precisely what you need. These Iridium plugs feature a fine-wire iridium center tip combined with advanced laser-welded technology. This design maximizes fuel efficiency and focuses on eliminating common ignition issues like rough idling and misfiring that plague aging L4 engines.

Key features that stand out:
– Specific L4 2.5L Fitment: Perfectly optimized for the smaller Impala engine.
– 0.6mm Finewire Iridium Tip: Ensures maximum ignitability and stability.
– Focus on Fuel Efficiency: Designed to minimize fuel consumption.

Pros:
– Direct solution for newer L4 Impala models
– Rigorous quality testing addresses common misfire issues
– Excellent stability across the engine’s speed range
– 12-month warranty included

Cons:
– Only applicable to the less common 4-cylinder Impala engine.

Best for: Owners of 2014-2019 Impalas with the 2.5L L4 engine prioritizing fuel economy and smooth idle.

Expert Opinion: The shift to the 2.5L engine in later Impalas requires a plug specifically engineered for its demands. The laser-welded Iridium tips ensure a durable, consistent spark necessary for modern, high-compression L4s, significantly improving the experience for drivers reporting poor idling.

6PCS 41-109 Double Iridium Spark Plug For Buick Enclave LaCrosse/Cadillac ATS CTS SRX STS XTS/Chevy Camaro Colorado Equinox Impala Malibu/GMC Acadia Canyon Terrain/Saturn V6 12622561 ILT6RE11 90117

This high-performance double iridium spark plug set is ideal for the 3.6L V6 Impala models (2012-2018). Double iridium means both the center electrode and the ground electrode are fortified with the precious metal, dramatically extending the working life up to 100,000 kilometers or more. These plugs provide superior cold-start performance and ensure a smoother-running engine, even under heavy loads.

Key features that stand out:
– Double Iridium Construction: Unmatched lifespan and durability (up to 100,000 km).
– Excellent Functionality: Addresses weak acceleration and engine shaking.
– Faster Starts and Quicker Acceleration: Benefits of the consistent double iridium spark.

Pros:
– Longest possible replacement interval
– Consistent and stable spark delivery
– Ideal for modern 3.6L V6 engines
– Improves fuel economy and lowers emissions

Cons:
– One of the most expensive options due to the double precious metal application.

Best for: Drivers of 2012-2018 3.6L V6 Impalas who want the absolute longest plug life and top-tier performance.

Expert Opinion: If longevity is your primary concern, double iridium is the way to go. The 41-109 specification is widely recognized as a top-quality OE replacement for GM’s high-feature V6 engines, making it a definitive choice among the best spark plugs for Chevy Impala V6 performance.

UF569 Ignition Coil &12622561 Double Iridium Spark Plug For Buick Allure Enclave LaCrosse/Cadillac ATS XTS CTS SRX STS/Chevy Impala Malibu Equinox Traverse/GMC Canyon Acadia Terrain/Saturn/Suzuki

Sometimes, rough running isn’t just the plug—it’s the whole ignition system. This kit provides six double iridium spark plugs and six matching ignition coil packs (UF569). This combined solution is perfect for the 3.6L V6 Impalas (2012-2019) experiencing persistent engine misfire, rough engine idle, or poor cold starting. Replacing both components simultaneously ensures optimal system health and reliability.

Key features that stand out:
– Complete Ignition Overhaul: Includes both double iridium plugs and ignition coils.
– Double Iridium Spark Plugs: 100,000 km working life.
– High-Quality Coils: Advanced thermoplastic connectors and stainless-steel springs ensure stable voltage transfer.

Pros:
– Solves multiple ignition system issues at once
– Guarantees compatibility between coils and plugs
– Superior performance and reliability for cold starts
– High resistance to radio frequency interference

Cons:
– More complicated installation due to replacing coils as well as plugs.

Best for: Impala owners troubleshooting persistent misfires or reaching the 100,000-mile mark where both coils and plugs should be replaced.

Expert Opinion: This is the smart choice for preventative maintenance on a high-mileage 3.6L V6. Since accessing the rear bank of plugs and coils on these engines is labor-intensive, swapping everything out at once with high-quality double iridium components provides maximum peace of mind and the best value for your time.

6 Pack 41-109 Double Iridium Spark Plug Fit for Chevy Impala Camaro Equinox Crossover Cadillac ATS CTS SRX STS XTS GMC Acadia Canyon Terrain Buick Enclave LaCrosse Replace 12622561 ILT6RE11 90117

Another excellent example of the highly sought-after 41-109 double iridium plug, this set emphasizes the benefits of its upgraded dual-iridium design. Compared to single-iridium alloys, this configuration offers more stable and reliable ignition, ensuring the engine starts quickly under various conditions. It’s perfect for the 3.6L V6 Impala (2012-2018), focusing on improved combustion efficiency and long-term savings.

Key features that stand out:
– Upgraded Dual Iridium Design: Superior stability and reliability.
– Improved Combustion Efficiency: Directly enhances engine performance and fuel economy.
– Anti-corrosion and Durability: Withstands high temperature and pressure environments.

Pros:
– Reduces the frequency of replacement
– Provides smooth power output
– Excellent long-term durability and resistance to wear
– Direct replacement for OE number 12622561

Cons:
– Requires careful handling during installation due to the fine tip.

Best for: Impala owners focused on maximizing combustion efficiency and minimizing long-term maintenance costs on their 3.6L V6.

Expert Opinion: The marketing for double iridium plugs often highlights lifespan, but the real benefit is the incredibly consistent spark over those years. For a performance vehicle like the Impala, that stability translates directly to smooth acceleration and optimized power delivery, regardless of weather or driving conditions.

Ignition Coil Pack and Iridium Spark Plugs Set of 4 Compatible with Chevy Colorado 2015-2022/Impala 2014-2019/Malibu/Blazer & GMC Canyon 2015-2022/Acadia & Buick Envision 2017-2020 & Cadillac ATS 2.5L

For those running the 4-cylinder 2.5L Impala, this kit offers a comprehensive maintenance solution, pairing Iridium spark plugs with UF680 ignition coil packs. This set is engineered specifically for the L4 engine, promising an enhanced driving experience through high-conductivity copper cores that accelerate spark energy by 10-15%. This translates directly into quicker cold starts and optimized fuel efficiency.

Key features that stand out:
– Coil Pack and Plug Combo: Full ignition system replacement for the 2.5L L4.
– Enhanced Driving Experience: 10-15% faster spark energy for quicker starts.
– High-Quality Materials: Copper windings and robust ceramic insulator for durability.

Pros:
– Perfect OE fit for the L4 2.5L Impala (2014-2019)
– Ensures consistent performance in all weather conditions
– Exceeds OEM durability standards
– Excellent solution for persistent ignition issues

Cons:
– The plugs are single Iridium, not the ultra-long-life double iridium.

Best for: 2.5L L4 Impala owners seeking a complete ignition system refresh for improved acceleration and cold start capabilities.

Expert Opinion: Because L4 engines tend to run hotter and are tuned for maximum efficiency, the quality of the coil pack is just as important as the plug. This combo ensures the Impala’s smaller engine is receiving high voltage quickly and reliably, leading to optimized performance and long-term durability.

Helpful Comparison Short Insights

When evaluating the best spark plugs for Chevy Impala, the most crucial factor is matching the plug material to your engine model and driving habits.

For classic Impalas (pre-2012 V6, 3.4L, 3.8L, 3.5L/3.9L), options like the NGK V-Power (copper) offer fantastic conductivity and the closest OE feel, though they require replacement every 30k miles. Conversely, the A-Premium Iridium Platinum or the general Iridium 6-pack (Replaces TR55IX) provide massive longevity—up to 100,000 miles—reducing long-term hassle for older, high-mileage engines.

For the modern 3.6L V6 Impala (2012+), you should prioritize Iridium or Double Iridium. The 6PCS 41-109 Double Iridium is the ultimate choice for maximum lifespan and performance stability. These are engineered to handle the higher thermal loads of modern direct-injection systems. Champion Platinum plugs offer a reliable middle ground if budget is a slight concern.

If you drive the 2.5L L4 Impala, your best bet is specialized kits like the Iridium Spark Plugs 4 Pack 96329 or the comprehensive Ignition Coil Pack and Iridium Spark Plugs Set of 4. These L4 engines are highly sensitive to misfires, so a dedicated, high-efficiency Iridium plug ensures the best performance and fuel economy.

Final Verdict

Choosing the right spark plug doesn’t have to be overwhelming. Here is a breakdown of the top recommendations based on specific needs:

Best Overall Longevity (3.6L V6): Go with the 6PCS 41-109 Double Iridium Spark Plug. Its dual precious metal composition provides maximum durability and superior cold start performance, making it worth the investment for a truly extended service interval.

Best Budget/OE Replacement (2006-2011 V6): The 6 pc NGK V-Power Spark Plugs win hands down. They offer excellent, reliable performance that often resolves rough idle issues instantly for older 3.5L and 3.9L engines, provided you commit to a shorter replacement schedule.

Best Comprehensive Solution (3.6L V6): If you are approaching 100,000 miles or experiencing severe misfires, the UF569 Ignition Coil & 12622561 Double Iridium Spark Plug Kit provides the fastest and most reliable fix by replacing the entire ignition circuit with high-end components.

Best Spark Plugs For Chevy Impala FAQ

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

A: The replacement interval depends heavily on the plug material. Standard copper plugs (like V-Power) should be replaced roughly every 30,000 to 40,000 miles. However, Iridium and Platinum plugs, commonly installed in modern Impalas, typically last much longer, usually between 80,000 and 100,000 miles. Always check your Impala’s specific engine maintenance schedule for the official recommended replacement interval.

Q2: What is the difference between Iridium and Platinum spark plugs?

A: Both Iridium and Platinum are precious metals used for their durability and high melting points. Platinum offers great longevity and consistency. Iridium, however, is harder and has an even higher melting point, allowing manufacturers to use a finer electrode tip (like the 0.6mm fine-wire tips). This finer tip delivers a more concentrated, efficient spark, leading to better overall Impala ignition system performance and slightly longer life than traditional platinum.

Q3: What are the symptoms of needing new best spark plugs for chevy impala?

A: Common signs that your Impala needs new spark plugs include:
1. Engine Misfire: Especially noticeable during acceleration or idling.
2. Rough Idle: The engine shakes or vibrates more than usual.
3. Reduced Fuel Efficiency: You notice a significant drop in miles per gallon.
4. Difficulty Starting: The car cranks slowly or requires multiple attempts to fire up (especially when cold).
5. Weak Acceleration: The car hesitates or feels sluggish when you press the gas pedal.

Q4: Should I replace my ignition coils when I replace my spark plugs?

A: While not always necessary, replacing ignition coils is highly recommended when you reach high mileage (around 100,000 miles), especially on the 3.6L V6 Impala where access to the rear plugs is difficult. Replacing both at the same time is preventative maintenance that ensures consistent spark delivery and avoids potential coil failures shortly after a plug replacement. Kits like the UF569 combo offer a convenient and high-quality solution.

Q5: Do I need to gap my new spark plugs for my Impala?

A: Most high-quality Iridium and Platinum spark plugs come pre-gapped from the factory to the vehicle manufacturer’s specifications. However, due to potential shipping damage or variations, it is always best practice to check the gap size against your vehicle’s specifications (found in the owner’s manual or under the hood). Avoid trying to adjust Iridium plugs unless absolutely necessary, as the delicate fine-wire tips can easily be damaged.

Q6: Can the wrong spark plugs damage my Impala engine?

A: Yes. Using the wrong heat range plug (too hot or too cold) can cause severe engine issues. A plug that runs too hot can lead to pre-ignition and detonation, damaging pistons and valves. A plug that runs too cold can lead to fouling and poor combustion. Always use plugs specifically rated for your Impala’s year and engine type to ensure optimal performance and prevent potential damage.