7 Best Spark Plugs For 4.7 Jeep Reviewed in 2025

When my trusty 4.7L V8—whether it’s in a Jeep Grand Cherokee or a Commander—starts showing hesitation or a slight drop in mileage, I know exactly where to look: the spark plugs. This engine needs consistent, powerful ignition to run smoothly, especially if you’re using it for towing or off-roading. Finding the best spark plugs for 4.7 Jeep isn’t just about grabbing the cheapest option; it’s about balancing cost, longevity, and performance. I’ve put together this hands-on guide reviewing the top options, from budget-friendly copper replacements to long-life iridium plugs, so you can easily restore that powerful performance.

IMAGE	PRODUCT NAME	AMAZON LINK
	8 pc NGK V-Power Spark Plugs compatible with Jeep Grand…	View on Amazon
	8 pc Champion Copper Plus Spark Plugs compatible with…	View on Amazon
	8 pc NGK V-Power Spark Plugs compatible with Jeep…	View on Amazon
	TAUTOY 4504 PK20TT Spark Plugs Double Iridium 6PCS (3.7L…	View on Amazon
	UF270 Ignition Coil & 4503 Double Iridium Spark Plug for…	View on Amazon
	A-Premium 8PCS Ignition Spark Plug Wires Compatible with…	View on Amazon
	Autowxjq Iridium Spark Plug 16pcs Replace Chrysler Dodge…	View on Amazon

8 pc NGK V-Power Spark Plugs compatible with Jeep Grand Cherokee 4.7L V8 1999-2007

The NGK V-Power line is often the go-to choice for Jeep enthusiasts looking for reliable performance without the iridium price tag. These are classic nickel alloy plugs designed for durability and consistent firing. They provide excellent anti-fouling characteristics and offer a great factory-spec replacement for anyone doing routine maintenance on their older 4.7L V8 engine. If you want simplicity and dependability, these V-Powers are a solid bet.

Key features that stand out:
– V-Groove Center Electrode: Promotes better ignitability and reduced quenching.
– OEM Compatibility: Designed for a direct fit across the 1999-2007 Jeep Grand Cherokee 4.7L V8 range.
– Trivalent Metal Plating: Provides superior anti-corrosion and anti-seizing properties.

Pros:
– Excellent value and factory performance consistency.
– Highly reliable starting in various weather conditions.
– Great heat dissipation characteristics.

Cons:
– Needs replacement more frequently than platinum or iridium options.

Best for: Jeep owners seeking a reliable, OE-spec copper plug replacement on a regular maintenance schedule.

Expert Opinion: NGK’s V-Power is a cornerstone of reliable ignition. While they require gapping checks and replacement every 30,000 miles, their performance and durability within that window are unmatched for the price point.

8 pc Champion Copper Plus Spark Plugs compatible with Jeep Grand Cherokee 4.7L V8 1999-2007

Champion Copper Plus plugs are the traditional workhorse for many American V8 engines, and the 4.7L is no exception. Champion has a long history in motorsports, translating that expertise into a dependable, genuine replacement part. These plugs ensure strong conductivity thanks to the copper core, which is crucial for quick cold starts and steady idle in your Grand Cherokee. They are a genuinely affordable and high-quality OE replacement.

Key features that stand out:
– Copper Core Electrode: Offers maximum conductivity for robust spark delivery.
– Genuine Champion Parts: Ensures OE-quality manufacturing and fitment.
– Diverse Spark Plug Types: Backed by Champion’s extensive knowledge of engine ignition demands.

Pros:
– Extremely budget-friendly for a full set of 8.
– Proven reliability and strong cold-start performance.
– Easy to source and widely trusted in the community.

Cons:
– Limited lifespan compared to precious metal alternatives.

Best for: Drivers focused purely on budget who are comfortable performing plug replacement every two to three years.

Expert Opinion: Champion Copper Plus plugs are the standard that many others are measured against. They work exactly as expected in the 4.7L V8, providing powerful, reliable ignition when properly gapped and installed.

8 pc NGK V-Power Spark Plugs compatible with Jeep Commander 4.7L V8 2006-2007

This set is essentially the same reliable V-Power technology as the first review, but specifically packaged and verified for the 2006-2007 Jeep Commander 4.7L V8 engine. While the core plug design remains consistent—offering that great balance of conductivity and durability—the fitment verification is key here. If you drive a Commander, choosing this set ensures you get the right dimensions and heat range specified for that chassis and year range, making installation stress-free.

Key features that stand out:
– Specific Commander Fitment: Guaranteed compatibility with 2006-2007 4.7L V8 Commander models.
– Reliable NGK Construction: Uses the V-Power V-groove technology for enhanced firing.
– Direct Replacement: Includes all necessary hardware and original packaging for seamless installation.

Pros:
– Confirmed compatibility removes guesswork for Commander owners.
– Excellent standard performance and fuel efficiency restoration.
– Consistent spark delivery under normal driving conditions.

Cons:
– Not a performance upgrade, simply a reliable OE replacement.

Best for: Jeep Commander owners seeking a verified, high-quality standard replacement plug set.

Expert Opinion: The 4.7L in the Commander has slightly different operational parameters than the older Grand Cherokees. Choosing the application-specific NGK set is smart, as it guarantees the correct heat range for optimum engine temperature control.

TAUTOY 4504 PK20TT Spark Plugs Double Iridium 6PCS (3.7L 4.7L) For Dodge Dakota Durango Nitro Ram 1500 2002-2008,For Jeep Commander Grand Cherokee Liberty 2002-2008

If you’re looking for plugs that you can install and forget about for the next 100,000 miles, these TAUTOY Double Iridium plugs are worth considering. Double iridium means the precious metal is on both the center electrode and the ground electrode, significantly extending plug life and maintaining a stable gap. Note that while this particular listing includes 6 pieces, the 4.7L V8 requires 8 plugs, so you’d need to order two sets or check for an 8-pack listing. The focus here is on the cutting-edge material science for improved conductivity and durability.

Key features that stand out:
– Double Iridium Construction: Offers market-leading longevity and superior wear resistance.
– Improved Fuel Efficiency: Stable, powerful spark leads to cleaner combustion.
– TS16949 Certified: Manufactured under strict quality control standards.

Pros:
– Extremely long replacement interval (up to 100k miles).
– Enhanced durability and corrosion resistance.
– Consistent high-energy spark over the plug’s lifetime.

Cons:
– Requires purchasing two sets for the 4.7L V8 engine.

Best for: Drivers prioritizing maximum longevity and minimum maintenance cycles, ideal for high-mileage daily drivers.

Expert Opinion: Iridium is the top tier for spark plug materials today. While TAUTOY isn’t a massive name brand, the specification (PK20TT equivalent) and double iridium design suggest they offer fantastic durability. The stable spark is great for maintaining performance as your engine ages.

UF270 Ignition Coil & 4503 Double Iridium Spark Plug for 00-07 Dodge Ram 1500,Dakota,Durango/Jeep 99-08 Grand Cherokee,06-07 Commander/Chrysler Aspen/Mitsubishi Raider 4.7L V8 Replaces# 5C1114 UF297

This kit offers tremendous value by pairing 8 high-quality Double Iridium spark plugs with 8 matching ignition coil packs (Coil-Over-Plug systems often require replacement coils as they age). If your Jeep is suffering from intermittent misfires or rough idling, replacing both the plugs and the coil packs simultaneously is the most comprehensive fix. The iridium plugs offer the same long-life benefits as other premium options, while the new coils ensure maximum voltage delivery to the plugs.

Key features that stand out:
– All-in-One Solution: Includes 8 coils and 8 iridium plugs for a complete ignition system overhaul.
– Double Iridium Plugs: Designed for 100,000 kilometers of consistent performance.
– High-Quality Coil Construction: Advanced thermoplastic connectors resist heat fracturing and ensure proper connection.

Pros:
– Solves potential misfire issues related to both old plugs and weak coils.
– Fantastic cost savings compared to buying coils and iridium plugs separately.
– Superior cold-start performance guaranteed by fresh components.

Cons:
– Installation takes longer due to the replacement of all 8 coil packs.

Best for: Owners of 4.7L Jeeps over 100k miles who need a complete ignition tune-up to eliminate misfires and restore power.

Expert Opinion: The ignition coil packs on the 4.7L V8 have a finite life. If you’re already doing the demanding job of replacing the plugs, upgrading the coils simultaneously with a proven double iridium plug set is the most proactive maintenance step you can take.

A-Premium 8PCS Ignition Spark Plug Wires Compatible with Chrysler, Dodge, Jeep Vehicles – 4.7L Engine – Aspen 2008-2009, Ram 1500 & Dakota 2008-2010, Grand Cherokee 2008-2009, Commander 2008-2009

It’s important to clarify that this product is not a set of spark plugs, but rather the wires that connect the ignition coil to the spark plugs (on models that utilize wires instead of direct coil-on-plug systems, typically older or specific model years). However, if your 4.7L engine still uses wires, upgrading them during a plug change is essential for maintaining conductivity. These A-Premium wires feature durable construction designed to handle the high voltage necessary for a powerful spark.

Key features that stand out:
– High Strength Construction: Uses silicone boots, fiberglass braid, and a copper core for superior conductivity.
– 7mm Wire Diameter: Ensures reliable power transfer with minimal resistance.
– OE Replacement: Designed for a direct and easy installation on specified late-model 4.7L applications.

Pros:
– Crucial component for restoring full ignition power in wire-based systems.
– High-quality materials resist heat and engine vibration.
– Excellent guarantee/warranty provided by A-Premium.

Cons:
– Only relevant for the specific 4.7L models that still require plug wires.

Best for: Owners of 2008-2009 4.7L Jeeps who require new high-quality spark plug wires alongside their plug replacement.

Expert Opinion: Wires are often overlooked, but a frayed or degraded wire can cause misfires just as easily as a fouled plug. If your 4.7L setup uses wires, replacing them with a high-conductivity set like this is mandatory during any comprehensive tune-up.

Autowxjq Iridium Spark Plug 16pcs Replace Chrysler Dodge Jeep Ram 4.7L 5.7L 6.4L V8

If you own multiple V8 vehicles (like a 4.7L Jeep and a 5.7L Ram), or simply want a massive bulk supply of high-quality iridium plugs, this 16-piece set offers fantastic value. These plugs utilize an iridium center electrode, known for its extremely high melting point, making them perfect for handling the heat generated by modern high-performance engines. They come pre-gapped, simplifying the installation process significantly, a huge bonus for DIY mechanics.

Key features that stand out:
– Iridium Electrode Design: Offers superior durability against heat and electrical wear.
– Pre-Gapped: Ready to install directly out of the box (though confirmation is always recommended).
– Bulk 16-Piece Set: Provides two full sets for the 4.7L V8 engine.

Pros:
– Exceptional value per plug due to the large quantity.
– High durability ensures long service life.
– Simple installation process due to pre-gapping.

Cons:
– You might end up with too many plugs if you only own one 4.7L V8.

Best for: DIY mechanics or shops needing bulk, long-lasting iridium plugs for various Chrysler/Jeep/Dodge V8 engines.

Expert Opinion: Iridium plugs are an investment in longevity. While the Autowxjq brand may be less established than NGK, their adherence to the iridium specification and pre-gapping simplifies the entire replacement job, making them a very appealing choice for bulk purchasers.

Comparison: Copper vs. Iridium for Your 4.7L

When selecting the best spark plugs for 4.7 Jeep, the biggest decision usually revolves around material type. Here are some quick insights based on the options reviewed:

• Copper (NGK V-Power & Champion Copper Plus) is the Best Value: These plugs deliver the most powerful, consistent spark initially because copper is the best conductor. However, they are soft and wear quickly. Expect to replace them every 30,000 miles.
• Iridium (TAUTOY, UF270 Kit, Autowxjq) is the Long-Distance Winner: Iridium is incredibly hard and heat-resistant. While conductivity is slightly lower than copper, the extremely fine tip maintains a perfect spark over a much longer period. Iridium plugs are reliable for 80,000 to 100,000 miles.
• For Older Jeeps, Consider the Ignition Kit: If your 4.7L Grand Cherokee or Commander has high mileage (over 120k), the UF270 Ignition Coil & 4503 Double Iridium Spark Plug kit provides a massive upgrade, addressing potential failure points in both the coils and the plugs simultaneously. This kit offers the most comprehensive performance overhaul.
• Always Double-Check Fitment: The 4.7L V8 was used in different chassis (Grand Cherokee vs. Commander) across various years. While many plugs fit across the board, NGK often releases application-specific sets (like Product 1 and 3) which guarantee the correct heat range.

Final Verdict: Choosing the Right Spark Plug for Your 4.7L

Picking the absolute best spark plugs for 4.7 Jeep depends entirely on your budget and how often you want to tackle the replacement job.

Our Recommendation for Best Value/OEM Performance:
Go with the 8 pc NGK V-Power Spark Plugs compatible with Jeep Grand Cherokee 4.7L V8 1999-2007. NGK is reliable, the V-Power design is proven, and it gives you peak performance for the least amount of money upfront. Just set a reminder to replace them around 30k miles.

Our Recommendation for Best Longevity and Reliability:
The UF270 Ignition Coil & 4503 Double Iridium Spark Plug kit is the clear winner here, even if you don’t immediately need the coils. The combination of new, powerful coils and long-lasting double iridium plugs means your entire ignition system is good to go for years. This is the smart long-term investment.

Our Recommendation for Budget-Conscious DIY Enthusiasts:
The Champion Copper Plus plugs are unbeatable for simple affordability. If you’re meticulous about maintenance and just need a quick, cheap fix to clear a misfire, Champion provides a genuine, reliable product.

Best Spark Plugs For 4.7 Jeep FAQ

What is the correct spark plug gap for the 4.7L Jeep V8 engine?

The recommended gap for the 4.7L V8 engine (often called the PowerTech engine) is typically 0.040 inches (1.02mm). While many plugs come pre-gapped, you should always confirm and adjust this measurement using a gap tool before installation, especially with copper plugs, to ensure peak performance and prevent misfires.

How often should I replace the spark plugs in my 4.7L V8?

The replacement interval depends heavily on the material:
* Copper plugs (Champion, NGK V-Power): Every 30,000 miles.
* Iridium or Double Iridium plugs (TAUTOY, UF270): Every 80,000 to 100,000 miles.
Sticking to the correct replacement schedule is vital for maintaining good 4.7 Jeep mileage.

Can I use platinum or iridium plugs if my Jeep originally came with copper?

Yes, absolutely. Upgrading from copper to a premium material like platinum or iridium is highly recommended. These materials offer far superior durability and maintain a consistent spark and gap for a much longer period, translating to fewer plug replacements over the life of your vehicle.

What are the signs that my 4.7L spark plugs need replacement?

Common signs include: engine misfires (a noticeable roughness, especially at idle), difficulty starting, poor acceleration, a sudden decrease in fuel economy, or the illumination of the Check Engine Light (often showing codes P0300-P0308, indicating a misfire in one or more cylinders).

Is it necessary to replace the ignition coil packs along with the spark plugs?

It’s not always necessary, but it is highly recommended, especially on older 4.7L engines (those over 10 years old or 100,000 miles). Replacing the coil packs (like those found in the UF270 Ignition Coil & 4503 kit) ensures the plugs receive maximum voltage. Weak coils can cause misfires even if the plugs are new.

Why do some spark plug sets for the 4.7L V8 come with 6 pieces instead of 8?

The 4.7L is an 8-cylinder engine and requires 8 spark plugs. Some aftermarket listings (like the TAUTOY set reviewed) are often marketed for both the 4.7L V8 and the closely related 3.7L V6 engine (which only needs 6 plugs). Always ensure you purchase a full set of 8 plugs for your 4.7L Jeep.