10 Best Spark Plugs For 4.8 Silverado Tested in 2025

I’ve spent countless hours under the hood of my 4.8L Silverado—it’s a workhorse, but like any engine, it needs the right ignition components to shine. When I first noticed that hesitant idle and those annoying misfires creeping in, I knew it was time for a spark plug replacement. Choosing the best spark plugs for 4.8 Silverado can be tough because of all the options out there, but through testing different types, I’ve compiled this guide based on real-world performance, longevity, and value. Let’s dive into what truly works to get that power and efficiency back.

IMAGE	PRODUCT NAME	AMAZON LINK
	8 pc NGK V-Power Spark Plugs compatible with Chevrolet…	View on Amazon
	TICANEE Iridium Spark Plugs and Wires Set for Chevy 5.3L…	View on Amazon
	8 Pcs Iridium Spark Plugs Replace OEM# 41-110 41-162…	View on Amazon
	8 Pcs Spark Plug Wires Set & 41-110 Iridium Spark…	View on Amazon
	8 pc NGK V-Power Spark Plugs compatible with Chevrolet…	View on Amazon
	8 pc E3 Spark Plugs compatible with Chevrolet Silverado…	View on Amazon
	BDFHYK 4024189078 Iridium Spark Plugs Compatible with 99-09…	View on Amazon
	Ozikutech High Performance Spark Plug Ignition Wires Set…	View on Amazon
	8x Iridium Spark Plugs and Wires Set for Chevy 5.3,…	View on Amazon
	8 pc DENSO Platinum TT Spark Plugs compatible with…	View on Amazon

8 pc NGK V-Power Spark Plugs compatible with Chevrolet Silverado 1500 4.8L 5.3L 6.0L 6.2L V8 1999-2013

If you’re driving an older model Silverado 4.8L and need reliable performance without breaking the bank, the NGK V-Power series is a classic choice. These aren’t the high-mileage iridium plugs, but they offer exceptional reliability and ignition quality thanks to their unique V-groove design. They are particularly effective in slightly older vehicles where performance is needed without overcomplicating the ignition system. They provide a robust spark that keeps your engine running smoothly until your next routine maintenance interval.

Key features that stand out:
– Genuine NGK Parts: Assurance of quality and fitment.
– Advanced V-groove design: Promotes better flame spread and ignition.
– High performance Nickel electrode: Provides reliable firing characteristics.
– Economical performance plug: Great balance of cost and function for many Silverado owners.

Pros:
– Excellent spark development reliability.
– Highly affordable set.
– A trusted OEM supplier standard for GM trucks.

Cons:
– Shorter service life compared to Iridium options.

Best for:
Budget-conscious owners of older 4.8L Silverados (pre-2007) prioritizing consistent performance.

Expert Opinion: While Nickel plugs require more frequent replacement than premium metals, the V-Power design is proven to deliver a cleaner, more efficient burn in traditional engine setups like the 4.8L, helping minimize low-end fouling.

TICANEE Iridium Spark Plugs and Wires Set for Chevy 5.3L Silverado 1500 Suburban Avalanche Tahoe 4.8L 6.0L, 41-110 Spark Plugs Compatible with GMC Yukon Sierra 12621258

This TICANEE kit provides exceptional value by bundling high-quality Iridium plugs (OE spec 41-110) with a matching wire set. If you are servicing your 4.8L Silverado and realize both components are due for replacement, this is a time and money saver. The dual Iridium tips are engineered for serious longevity—up to 100,000 miles—meaning you won’t have to worry about ignition issues for years to come. This is truly a convenient, plug-and-play solution.

Key features that stand out:
– Included Plugs and Wires: Provides a complete ignition tune-up kit.
– Dual Iridium Tip: Provides improved resistance to erosion and corrosion for maximum service life.
– Long Lasting Time: Designed to go up to 100,000 miles before replacement.
– Pure Copper Core: Ensures excellent durability and resistance to fouling.

Pros:
– Comprehensive kit covering plugs and wires.
– Excellent durability and long service life.
– Direct replacement specifications (OE 41-110).

Cons:
– Wires may not match the extreme performance standard of specialized racing wires.

Best for:
Silverado owners looking for the best long-term value and convenience in a single tune-up kit.

Expert Opinion: Bundled kits like this are ideal for routine maintenance on high-mileage trucks. The Iridium construction is essential for maintaining ignition demand voltage consistency over long intervals in modern computer-controlled engines.

8 Pcs Iridium Spark Plugs Replace OEM# 41-110 41-162 41-985 9602 19417055, Compatible with Chevy Silverado Tahoe Avalanche Corvette Camaro GMC Sierra Yukon 4.8L 5.3L 5.7L 6.0L 6.2L 6.6L 8.1L V8

These Iridium plugs are designed to be an exact replacement for several popular OEM part numbers used across the GM V8 lineup, including the 4.8L. The focus here is broad compatibility and reliable ignition performance. Featuring a precise 0.04-inch pre-gap, these plugs ensure you get a consistent, powerful spark right out of the box, translating directly into smoother idling and better throttle response in your Silverado.

Key features that stand out:
– Broad OEM Cross-Reference: Replaces multiple common GM plug numbers (41-110, 41-162, etc.).
– Iridium Construction: Provides longevity required for modern GM engines.
– Pre-Gapped: Ready to install with a reliable 0.04″ (1mm) pre-gap.
– Wide Vehicle Compatibility: Fits a large range of LS-series V8 engines.

Pros:
– Strong replacement option for various GM/LS applications.
– Consistent and reliable ignition performance.
– Durable Iridium core designed for long life.

Cons:
– Doesn’t include new ignition wires, which may be needed separately.

Best for:
Owners prioritizing reliable, OEM-spec Iridium replacement plugs compatible with a wide range of model years and engine variants.

Expert Opinion: When dealing with LS engines, using a plug that adheres strictly to the OEM heat range and gap is crucial for avoiding detonation or misfires under load. This set offers that high level of dimensional and material precision.

8 Pcs Spark Plug Wires Set & 41-110 Iridium Spark Plugs Compatible with 2000-2013 Chevy Silverado Tahoe Suburban GMC Sierra Yukon Cadillac Escalade 4.8 5.3 6.0 6.2 L, Replace for 41-162 9748HH 9748UU

Similar to other comprehensive kits, this package includes both the Iridium spark plugs and a new set of wires, making your full ignition tune-up simple. These iridium plugs are specifically targeted at the popular 2000-2013 truck generations, ensuring proper fitment and electronic compatibility. If you’ve noticed your existing wires are brittle or damaged, swapping them out with this kit will immediately improve conductivity and reduce the chance of voltage leaks.

Key features that stand out:
– Complete Tune-Up Kit: Includes both 41-110 Iridium plugs and new ignition wires.
– Iridium Longevity: Engineered for extended service intervals, similar to OEM specifications.
– Reliable Pre-Gap: Features a dependable 0.04″ pre-gap for consistent spark delivery.
– High Compatibility: Perfect fit for the most popular GMT800 and GMT900 platform trucks.

Pros:
– Eliminates the need to source plugs and wires separately.
– High-quality Iridium construction maximizes engine efficiency.
– Ideal for resolving persistent misfire codes related to aging wires and plugs.

Cons:
– Packaging quality is sometimes inconsistent.

Best for:
Owners of 2000-2013 4.8L Silverados needing a total replacement of ignition components for reliability.

Expert Opinion: For trucks that tow or haul regularly, the constant thermal cycling can damage both the plug tips and the insulation on the wires. Replacing both simultaneously guarantees that the ignition system is working at its highest efficiency.

8 pc NGK V-Power Spark Plugs compatible with Chevrolet Silverado 2500 4.8L 5.3L 6.0L V8 1999-2014

This is another great offering from NGK’s reliable V-Power line, specifically formatted for the slightly broader application range of the Silverado 2500 series (which often shares the 4.8L engine in lighter duty configurations). What makes these Nickel plugs excellent is the Trivalent Metal Plating, which is a significant practical benefit. It prevents seizing in the cylinder head, which is a headache many DIY mechanics dread when working on older aluminum heads.

Key features that stand out:
– Genuine NGK Quality: A recognized leader in ignition technology.
– Trivalent Metal Plating: Provides superior anti-corrosion and anti-seizing properties.
– V-Groove Design: Enhances ignitability even in lean conditions.
– Designed for Durability: Reliable performance for everyday use in heavy-duty applications.

Pros:
– Anti-seizing plating makes future replacements much easier.
– Very cost-effective maintenance option.
– Proven reliability in GM truck engines.

Cons:
– The required maintenance interval is shorter than iridium plugs.

Best for:
Mechanics or DIYers who want a reliable, easy-to-remove plug and prefer frequent, cost-effective maintenance.

Expert Opinion: The anti-seizing feature alone makes these a winner for older trucks where plugs have sat for years. While they don’t last 100k miles, they perform reliably throughout their life span, which is key for fleet vehicles and work trucks.

8 pc E3 Spark Plugs compatible with Chevrolet Silverado 1500 4.8L 5.3L 6.0L 6.2L V8 1999-2013

E3 plugs stand out instantly due to their distinct DiamondFIRE electrode design. Unlike traditional plugs that rely on a single center electrode, the E3 design creates a unique edge-to-edge spark path that is supposed to encourage better flame propagation. E3 claims this results in increased power, improved fuel efficiency, and quick starts in all conditions. If you’re looking for something outside the traditional Nickel/Iridium options to potentially gain a slight performance edge, these are worth trying.

Key features that stand out:
– DiamondFIRE Electrode: Unique design for better spark access to the fuel charge.
– Increased Power Claims: Engineered to boost engine power and reduce fuel consumption.
– Copper Core Construction: Enhances heat transfer and durability.
– Reduced Carbon Deposits: Near elimination of performance-inhibiting carbon deposits.

Pros:
– Distinct design offers strong ignition reliability.
– May provide noticeable improvements in throttle response.
– Easy starting, regardless of weather conditions.

Cons:
– Some users report the power gains are modest compared to premium OEM plugs.

Best for:
Enthusiasts or owners willing to experiment with innovative designs to potentially maximize engine output and efficiency.

Expert Opinion: E3 plugs often work well in older, simpler combustion chamber designs, promoting faster ignition. However, in modern, tightly tuned LS engines, the performance gains are sometimes marginal, though their fouling resistance is a proven benefit.

BDFHYK 4024189078 Iridium Spark Plugs Compatible with 99-09 Silverado 1500 4.8L V8, 99-11 2013 Silverado 1500 5.3L V8, 2006 Silverado 1500 6.0L V8, 09-12 Silverado 1500 6.2L V8, Set of 8

This BDFHYK set focuses on delivering OE-level durability and ignition performance using Iridium at a competitive price point. These plugs boast superior ignition jumps, ensuring the engine fires faster and more sensitively. If you are experiencing slow starts or slight hesitation, these Iridium plugs are an excellent solution to restore factory responsiveness. They are built to TS16949 certified manufacturing standards, giving you confidence in their quality and consistency.

Key features that stand out:
– Iridium Center Electrode Material: Ensures superior longevity and powerful spark.
– OE Level Durability: Manufactured to strict quality control standards.
– Superior Ignition Performance: Provides faster and more sensitive ignition response.
– Precise Specifications: Standardized thread size (14mm) and gap (1mm) for ideal fitment.

Pros:
– Strong focus on OE-level quality and durability.
– Significant increase in power performance claims.
– Excellent price for a full set of Iridium plugs.

Cons:
– Brand recognition is lower than major players like NGK or Denso.

Best for:
Value shoppers who specifically want long-life Iridium performance without the premium brand price tag.

Expert Opinion: Iridium plugs consistently prove their worth in modern engines by lowering the demand voltage over time. These plugs provide the necessary thermal and electrical stability required by the 4.8L ignition system for long intervals.

Ozikutech High Performance Spark Plug Ignition Wires Set Fit for 2000-2021 Chevy Silverado Tahoe Suburban Avalanche GMC Sierra Yukon Cadillac Escalade 4.8 5.3 6.0 6.2 V8, Replace OEM# 9748HH 19431551

While this is primarily a spark plug wire set, it’s included because ignition wires are an integral part of ignition performance for the 4.8L Silverado. This Ozikutech set targets performance enthusiasts, featuring a heavy-duty 10.2mm diameter cable. Thicker cables generally mean better protection and lower resistance, allowing maximum voltage to reach the spark plug, crucial for maintaining peak performance and avoiding interference (EMI/RFI).

Key features that stand out:
– Heavy-Duty 10.2mm Cable: Significantly thicker than most OEM wires for better protection.
– High EMI/RFI Suppression: Helps eliminate electronic interference that can disrupt engine sensors.
– Low Resistance: Ensures maximum spark energy reaches the plug.
– Broad Compatibility: Fits a vast range of 4.8L, 5.3L, and 6.0L GM trucks and SUVs.

Pros:
– Substantial upgrade over stock or aged wires.
– Improves throttle response and fuel efficiency.
– Excellent durability and heat resistance.

Cons:
– Plugs must be purchased separately.

Best for:
Owners who already have high-quality plugs installed but need to upgrade or replace their old, deteriorated ignition wires for maximum conductivity.

Expert Opinion: The quality of the wire set is often overlooked. If you pair premium Iridium plugs with old, cracking wires, you won’t get maximum benefit. The 10.2mm insulation on this set offers excellent voltage delivery stability, especially crucial in high-heat LS engine bays.

8x Iridium Spark Plugs and Wires Set for Chevy 5.3, 41-110 Spark Plugs for Silverado 1500 Suburban Avalanche Tahoe 5.3L 4.8L 6.0L, 9748HH Compatible with GMC Sierra Yukon

Here we have another robust, all-in-one Iridium plug and wire kit, designed to make your 4.8L tune-up effortless. This package specifically emphasizes the inclusion of 10.5mm High Performance Racing Spark Plug Wires, an upgrade over standard wire thickness. By combining high-quality 41-110 Iridium plugs with these performance wires, this kit is positioned for those who want long-lasting OEM performance with a slight upgrade in conductivity and wire durability.

Key features that stand out:
– Performance Wire Upgrade: Features 10.5mm high-performance racing spark plug wires.
– Complete Tune-Up Package: Includes 8 Iridium plugs (41-110 OE spec) and 8 wires.
– Pre-Gapped Plugs: Ready for immediate installation.
– Maximum Compatibility: Designed for the most common GM truck engines (4.8L up to 6.2L).

Pros:
– The 10.5mm wires offer improved current flow and durability.
– Excellent value for replacing both plugs and wires.
– Helps solve misfires caused by plug wear and wire degradation.

Cons:
– May be overkill for a completely stock, daily driven truck.

Best for:
Owners seeking maximum conductivity and durability from their ignition system without moving to expensive aftermarket coils.

Expert Opinion: Combining Iridium plugs with high-performance wires is the best way to ensure the coil pack can deliver its full potential spark energy to the combustion chamber efficiently, which is highly beneficial for the 4.8L.

8 pc DENSO Platinum TT Spark Plugs compatible with Chevrolet Silverado 1500 4.8L 5.3L 6.0L 6.2L V8 1999-2013

DENSO is an industry leader and often credited with advancing ignition technology, particularly using precious metals like Platinum and Iridium. Their Platinum TT (Twin Tip) design is unique: it features a fine-wire platinum center electrode and a titanium-enhanced ground electrode. This twin-tip design aims to increase ignitability and reduce misfires by creating a larger, more efficient spark nucleus, especially helpful for eliminating erratic starts and improving combustion consistency in the 4.8L V8.

Key features that stand out:
– Genuine DENSO Quality: Trusted OEM supplier known for innovation.
– Platinum TT (Twin Tip) Design: Creates a larger spark nucleus for more complete and efficient combustion.
– Reduced Emissions and Misfires: Engineered to virtually eliminate erratic starts.
– Superior Anti-Fouling: Excellent performance even with poor fuel mixtures.

Pros:
– Advanced electrode design improves fuel ignition.
– Highly consistent and stable performance over time.
– Exceptional reliability and long lifespan.

Cons:
– Generally higher cost than standard Nickel plugs.

Best for:
Owners prioritizing cutting-edge ignition technology and maximum fuel efficiency/misfire reduction in their 4.8L Silverado.

Expert Opinion: The TT design effectively mimics some of the benefits of Iridium plugs in terms of ignitability but at a slightly lower price point than dual-Iridium. DENSO quality assurance is consistently top-tier, making these a solid long-term investment.

Comparison Insights on Best Spark Plugs For 4.8 Silverado

When we look at the offerings for the 4.8L Silverado, the products generally fall into three categories: Nickel (Value), Iridium (Longevity), and Specialty (Performance/Design).

For those sticking to a tight budget or servicing older trucks, the NGK V-Power plugs are a fantastic, proven choice. They provide robust, reliable ignition and the Trivalent Metal Plating (Product #5) is a huge practical benefit for preventing seized plugs. However, be prepared to replace them around the 30,000-50,000 mile mark.

If you are replacing wires anyway, the Iridium plug and wire kits (TICANEE or 8x Iridium) offer the best overall value. Not only do you get plugs rated for up to 100,000 miles, but you also get new wires to eliminate the most common sources of high-mileage misfires. The 8x Iridium kit (Product #9) with its 10.5mm wires is the best conductivity upgrade.

The DENSO Platinum TT and the E3 plugs represent specialized technology. If your primary goal is the most complete combustion possible and reducing emissions/misfires in a tricky environment, the DENSO TT design is scientifically sound and backed by an excellent brand reputation. The E3 DiamondFIRE plug is a compelling alternative if you are looking for that small, noticeable bump in low-end throttle response.

For a straight, long-term OEM replacement, the stand-alone Iridium plugs (Product #3 or BDFHYK #7) offer the longest interval and the most dependable performance consistency in the 4.8L engine.

Final Verdict

Choosing the right spark plug for your 4.8L Silverado depends heavily on your budget and how long you plan to keep the truck. Based on performance, longevity, and overall value, here are my top picks:

Best Overall Longevity and Performance

The TICANEE Iridium Spark Plugs and Wires Set (Product #2) takes this category. Since many 4.8L Silverados are now older, replacing both plugs and wires simultaneously offers the greatest return on investment, ensuring ignition health for the next 100,000 miles with high-quality Iridium components.

Best for Budget and Easy Maintenance

The 8 pc NGK V-Power Spark Plugs (Product #5) is the most dependable budget option. The inclusion of the Trivalent Metal Plating guarantees that when it’s time for the next replacement, you won’t be battling seized plugs—a crucial feature for any GM truck pushing two decades old.

Best Technology Upgrade

If you want a noticeable boost in combustion efficiency and anti-fouling capability, go with the 8 pc DENSO Platinum TT Spark Plugs (Product #10). DENSO’s unique Twin Tip design optimizes the spark kernel, leading to smoother idling and improved efficiency, making it the superior option for maximizing the engine’s potential.

Best Spark Plugs For 4.8 Silverado FAQ

Q1: What is the correct spark plug gap for the 4.8L Silverado V8 engine?

A: For most models of the 4.8L Silverado (especially 1999–2013), the factory specified spark plug gap is 0.040 inches (1.0 mm). While many Iridium plugs come pre-gapped correctly, it is always recommended to double-check this measurement before installation using a wire gauge to ensure proper performance.

Q2: Should I use Copper, Platinum, or Iridium spark plugs in my 4.8L Silverado?

A: For the 4.8L engine, Iridium is generally recommended as it is the long-life standard for modern GM V8s. Iridium provides superior heat resistance and erosion protection, allowing for 100,000-mile change intervals. Copper plugs (like the NGK V-Power) work great and cost less, but must be changed much more frequently (30k-50k miles). Platinum sits in the middle but is less common in this specific application now that Iridium technology is widely available.

Q3: How often should I replace the spark plugs in my 4.8 Silverado?

A: If you are using Iridium spark plugs (OE specification 41-110), the replacement interval is typically 100,000 miles. If you opt for traditional Nickel or Copper plugs, you should aim to replace them much sooner, usually every 30,000 to 50,000 miles, to prevent misfires and poor fuel economy.

Q4: Will new spark plugs improve my fuel economy in the 4.8L V8?

A: Yes, if your old spark plugs are worn or fouled, installing new, efficient plugs (especially Iridium or Platinum types) can noticeably restore lost fuel economy. Worn plugs can cause incomplete combustion, wasting fuel. Better ignition promotes a cleaner, more efficient burn.

Q5: Do I need to replace the spark plug wires and coils when replacing the spark plugs?

A: While the ignition coils typically last the lifetime of the vehicle, it is highly recommended to inspect or replace the spark plug wires (boots and insulation) on older 4.8L Silverados (especially those over 100,000 miles). Wires degrade over time due to heat, leading to voltage leaks and misfires. Many kits, like the TICANEE options, bundle them for convenience.

Q6: What are the main signs that my 4.8L Silverado needs new spark plugs?

A: Common indicators include engine misfires (rough idling or stumbling under acceleration), poor fuel economy, difficulty starting the engine, and a general loss of engine power. If the “Check Engine” light illuminates, often indicating a P0300 series misfire code, worn plugs are frequently the primary culprit.