A Guide to Spark Plugs for the 2010-2016 Chevrolet Camaro
Everything you need to know about choosing and replacing the spark plugs in your V6 or V8 Camaro.
- For best results, use OEM-equivalent iridium spark plugs from ACDelco or NGK.
- The factory replacement interval is up to 100,000 miles, but symptoms may appear sooner.
- V6 owners should be aware of a TSB for oil/coolant leaks into spark plug tubes causing misfires.
- Replacing spark plugs is a feasible DIY job that can save you significant labor costs.
Signs of Failing Spark Plugs
Your Camaro's engine will usually tell you when the spark plugs are getting old. The original ACDelco iridium plugs are designed to last a long time, often up to 100,000 miles, but this can vary. If you notice any of these issues, it might be time to inspect your plugs.
🎬 Watch: See a breakdown of common bad spark plug symptoms.- Rough Idling: The engine may shake or vibrate more than usual when you're stopped.
- Poor Acceleration: The car feels sluggish or hesitant when you press the gas pedal.
- Reduced Fuel Economy: You find yourself filling up the gas tank more often than you used to.
- Engine Misfires: You might feel a hesitation or stumble from the engine, and the Check Engine Light may flash.
- Trouble Starting: The engine cranks for longer than normal before it starts.
Known Issue for V6 Models (TSB 21-NA-147)
Some 2010-2016 Camaros with the 3.6L V6 engine (codes LLT and LFX) may have an issue with porous cylinder heads. This manufacturing defect can allow oil or coolant to leak into the spark plug tubes. This will foul the spark plug, causing a persistent engine misfire (codes like P0300, P0301-P0306) and a Check Engine Light. If you find oil on your spark plugs, the official fix is to replace the entire cylinder head, along with the affected spark plug and ignition coil.
🎬 Watch: A deep dive into 3.6L V6 misfire issues.Choosing the Right Aftermarket Spark Plugs
When shopping for new spark plugs, you have several good options. The original plugs are ACDelco Iridium, which provide excellent performance and longevity. Many owners stick with these for good reason. However, high-quality aftermarket brands can offer similar or even better performance.
Brand Quality Tiers
- Top Tier (OEM Equivalent): ACDelco and NGK are the top choices for the Camaro. Many owners and experts believe that NGK actually manufactures the iridium spark plugs for ACDelco. You can't go wrong with an ACDelco Professional Iridium or an NGK Laser Iridium or Iridium IX plug. These are the best choices for long life and optimal performance in both stock and lightly modified cars.
- Excellent Alternatives: Denso is another highly respected brand that specializes in ignition components. Their Iridium Long Life plugs are a direct competitor to the top-tier options and are known for their quality and durability. Bosch also offers quality iridium and double platinum plugs that are a good fit for the Camaro.
- Standard Replacement: Brands like Champion and Autolite offer platinum and double platinum plugs that are a good, budget-friendly choice for a daily driven Camaro. While they may not have the same 100,000-mile lifespan as iridium plugs, they provide reliable performance for a lower cost.
Pro Tip: For the 2010-2016 Camaro, iridium spark plugs are the recommended type for all engines. They offer the best combination of performance and long life. While cheaper copper plugs are available, they will wear out much faster and are not recommended for the Camaro's ignition system.
Cost to Replace Spark Plugs
The cost can vary depending on your engine (V6 or V8) and who does the work. The V8 engines have 8 spark plugs, while the V6 engines have 6.
| Item | Estimated Cost |
|---|---|
| Aftermarket Spark Plugs (Iridium, set of 6-8) | $50 - $180 |
| Shop Labor | $150 - $350 |
| Total (DIY) | $50 - $180 |
| Total (Installed at Shop) | $200 - $530 |
Frequently Asked Questions
How often should I change the spark plugs on my Camaro?
The factory-installed ACDelco iridium spark plugs are designed to last up to 100,000 miles under normal driving conditions. However, if you drive aggressively, have performance modifications, or notice any failure symptoms, you should inspect them sooner. A common recommendation is to check them around 60,000-70,000 miles.
Is it hard to change the spark plugs myself?
For most home mechanics, changing the spark plugs on a 2010-2016 Camaro is a manageable job. It requires basic hand tools like a socket wrench, extensions, and a special spark plug socket. The job can typically be done in about an hour or two. 🎬 See this walkthrough for replacing spark plugs on your Camaro. Be sure to use a torque wrench to tighten the new plugs to the correct specification to avoid damaging the engine's cylinder heads.
Do I need to gap my new spark plugs?
Most high-quality iridium and platinum spark plugs from brands like ACDelco and NGK come pre-gapped from the factory for your specific vehicle. However, it is always a good idea to verify the gap with a feeler gauge or gapping tool before installation. The correct gap ensures the strongest spark and best engine performance. The gap can be knocked out of spec during shipping.
Should I use anti-seize on the spark plug threads?
This is a debated topic. Many modern spark plugs, especially those from NGK and ACDelco, have a special metal plating on the threads that acts as an anti-seize. Adding more anti-seize can cause you to over-tighten the plug, potentially damaging the threads in the cylinder head. It's best to follow the specific instructions from the spark plug manufacturer. If no instructions are given, install them clean and dry and torque to the proper specification.
What is a "colder" spark plug and do I need one?
A colder spark plug is designed to transfer heat more quickly away from its firing tip. For a stock or lightly modified Camaro, you should always use the stock heat range plug. Colder plugs are only necessary for engines with significant performance modifications like a supercharger, turbocharger, or nitrous oxide, as these create much more heat in the cylinders. Using a plug that is too cold in a stock engine can lead to carbon fouling and misfires.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12622561 41-109 41-162 12680074 41-166
Material: Iridium is the OEM standard and recommended for best performance and longevity. Platinum is a suitable, more affordable alternative. Engine Type: V6 engines require 6 spark plugs. V8 engines require 8 spark plugs.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Chevrolet Camaro: