5 Best Spark Plugs For Honda Ridgeline Reviewed 2025

I remember the first time I felt a slight hesitation in my Ridgeline’s 3.5L V6 engine—that was my cue that it was time for a tune-up. Replacing the spark plugs is one of the most critical maintenance tasks you can do to restore horsepower and keep your truck running smoothly. After installing and testing several sets, I’ve found that selecting the best spark plugs for honda ridgeline requires paying close attention to fitment (especially distinguishing between Gen 1 and Gen 2 models) and choosing the right metal technology. This hands-on guide walks you through the top five choices that deliver performance, longevity, and exceptional fuel economy.

IMAGE	PRODUCT NAME	AMAZON LINK
	6 pc NGK Iridium IX Spark Plugs compatible with Honda…	View on Amazon
	A-Premium Set of 6 Ignition Coil Pack and Iridium Spark…	View on Amazon
	Iridium Platinum Spark Plugs 6 Pack DILZKR7B11G 95350…	View on Amazon
	A-Premium Iridium Platinum Spark Plugs Compatible with…	View on Amazon
	6 pc NGK G-Power Spark Plugs compatible with Honda…	View on Amazon

6 pc NGK Iridium IX Spark Plugs compatible with Honda Ridgeline 3.5L V6 2009-2019

NGK’s Iridium IX line is often the go-to for performance enthusiasts and everyday drivers seeking superior longevity and a reliable, hot spark. This set is specifically tailored for the second generation of the Ridgeline (and late Gen 1 models), ensuring a precise fit for the 3.5L V6 engine. The Iridium IX features a fine-wire electrode tip, which minimizes voltage requirement for ignition, resulting in faster, crisper engine starts and consistent performance, even under heavy towing loads. They’re designed to be a direct, hassle-free replacement, meaning you can often install them right out of the box.

Key features that stand out:
– Genuine NGK Parts: Ensures high-quality manufacturing and reliable performance.
– Iridium Alloy: Extremely high melting point provides long plug life and consistent spark.
– Direct Replacement: Pre-gapped and designed to match the original equipment specifications for Ridgeline models 2009-2019.

Pros:
– Excellent throttle response and reliable high-heat operation.
– Superior anti-fouling capabilities thanks to the fine-wire design.
– Great fitment reliability across the specified model years.

Cons:
– Higher initial cost compared to standard platinum or copper plugs.

Best for:
Owners of 2009-2019 Ridgelines looking for a high-performance upgrade focused on maximum longevity and sharp ignition.

Expert Opinion: NGK Iridium IX is a benchmark for performance enthusiasts who want reliable, high-output ignition without going OEM. These plugs offer an outstanding balance of durability and immediate performance gains you can feel on the road.

A-Premium Set of 6 Ignition Coil Pack and Iridium Spark Plugs Compatible with Honda Pilot Ridgeline 2006-2008 & Acura MDX 2003-2006 & Saturn Vue 2004-2007, V6 3.5L

Sometimes, when your older Gen 1 Ridgeline (2006–2008) starts showing signs of misfiring or rough idling, it’s not just the plugs—it might be the coils, too. This kit provides a complete ignition system refresh, including six high-quality iridium spark plugs and six corresponding ignition coils. This is a fantastic value proposition for a full tune-up, guaranteeing that both the spark source and the delivery system are functioning optimally. Iridium plugs ensure extended life and improved fuel efficiency, while the new coils restore the high voltage needed for a crisp spark.

Key features that stand out:
– Complete Ignition Kit: Includes all 6 iridium plugs and 6 ignition coil packs (UF-400 equivalent).
– Iridium Spark Plug Material: Extends plug life nearly threefold compared to standard plugs.
– Improved Engine Performance: Designed to deliver a super performance with reduced emissions and faster starting.

Pros:
– Comprehensive solution for rough idling and misfires in older models.
– Excellent overall value by packaging coils and plugs together.
– Plugs and coils are engineered to work perfectly together.

Cons:
– Primarily fits the earlier, first-generation Ridgeline models (2006-2008 only).

Best for:
Owners of the first-generation (2006-2008) Ridgeline experiencing ignition issues who want to replace the entire system for maximum reliability.

Expert Opinion: For those with older Ridgelines facing both misfires and potentially original coil packs failing, this full kit is highly economical and ensures the entire ignition system is refreshed, offering peace of mind and simplified installation.

Iridium Platinum Spark Plugs 6 Pack DILZKR7B11G 95350 Compatible with Honda Odyssey Pilot Passport Ridgeline 2017 2018 2019 2020 & Acura MDX TLX RLX 2014-2020 V6 3.5L

If you own a newer, second-generation Ridgeline and want the closest thing to dealer-installed quality, this dual Iridium Platinum set is an excellent choice. These plugs feature an advanced laser welded technology and a 0.6mm fine-wire tip—specifications often mandated by modern OEM requirements. This combination ensures maximum fuel efficiency and incredibly stable high-voltage output, tackling common ignition system issues like stalling or poor idling before they become major problems.

Key features that stand out:
– Iridium Platinum Dual Metal: Superior heat resistance and longevity, rated for high mileage intervals.
– Exceptional Fuel Efficiency: Fine-wire design maximizes combustion efficiency.
– Strict Quality Control: Designed to mitigate engine jerking, misfiring, and poor fuel economy.

Pros:
– Matches or exceeds strict OEM specifications for modern Ridgeline V6 engines.
– Designed for optimal performance in 2017 and newer models.
– Provides exceptionally stable idle speed.

Cons:
– Higher price point due to the dual-precious metal construction.

Best for:
Newer Ridgeline owners (2016-2020+) who prioritize factory performance, exceptional longevity, and superior fuel efficiency.

Expert Opinion: This is a robust, OEM-grade option built specifically for the high demands and tighter tolerances of the second-generation Ridgeline V6 engine, providing exceptional stability and performance across the speed range.

A-Premium Iridium Platinum Spark Plugs Compatible with Honda Pilot 2006-2008, Odyssey 2005-2010, Ridgeline 2006-2008 & Acura MDX 2003-2006 & Saturn Vue 2004-2007, 3.5L, Pack of 6

This package focuses strictly on providing high-quality replacement plugs for the early model years of the Ridgeline (2006–2008). Featuring a durable Iridium center electrode and a Platinum core material, these plugs are engineered for longevity, recommending replacement intervals between 80,000 to 100,000 miles. They deliver exceptional ignitability and ensure that the older 3.5L engine maintains its horsepower and torque without requiring frequent maintenance.

Key features that stand out:
– Engineered for Longevity: Recommended for 80,000 to 100,000-mile service intervals.
– Dual Precious Metal Construction: Iridium tip combined with a Platinum core for ultimate durability.
– Exceptional Ignitability: Designed alongside OEMs for maximum ignition performance.

Pros:
– Excellent lifespan means fewer replacements over the truck’s life.
– Reliable, consistent spark performance for the Gen 1 V6 engine.
– Competitively priced for a high-mileage dual-precious metal plug.

Cons:
– Does not cover later generation Ridgelines (2009+).

Best for:
First-generation Ridgeline owners (2006-2008) who only need to replace the spark plugs and want high mileage durability.

Expert Opinion: If you have an earlier generation Ridgeline and only need to refresh the plugs (not the coils), this dual-precious metal set offers factory-standard performance and durability designed to go the distance.

6 pc NGK G-Power Spark Plugs compatible with Honda Ridgeline 3.5L V6 2009-2019

If you’re looking for a highly reliable set of best spark plugs for honda ridgeline but need a budget-friendly option compared to the top-tier Iridium plugs, the NGK G-Power line is an ideal compromise. These are high-quality platinum spark plugs that still offer better durability and efficiency than standard copper plugs. They provide a sharp, focused spark through the platinum fine wire center electrode, ensuring smoother acceleration and dependable cold starts for your 2009–2019 Ridgeline without breaking the bank.

Key features that stand out:
– Platinum Alloy: Excellent step up from copper, offering reliable performance and moderate lifespan.
– Affordable NGK Quality: Provides genuine NGK reliability at a lower cost than the Iridium IX line.
– Broad Ridgeline Compatibility: Fits 2009 through 2019 3.5L V6 engines seamlessly.

Pros:
– Best value option that maintains high-quality manufacturing standards.
– Good durability and improved efficiency over copper plugs.
– Guaranteed NGK fitment and reliability.

Cons:
– Lifespan is generally shorter than pure Iridium options.

Best for:
Value-conscious owners of 2009-2019 Ridgelines who perform more frequent tune-ups but require consistent performance.

Expert Opinion: The G-Power line is the smart choice for budget-conscious owners of the 2009-2019 Ridgeline who still demand NGK quality and improved efficiency over base-level plugs.

Comparison Insights: Choosing the Right Spark Plug

When sifting through the options to find the best spark plugs for honda ridgeline, your decision largely hinges on your Ridgeline’s model year and whether you prioritize longevity, performance, or value.

For the first-generation Ridgeline (2006–2008), the A-Premium kits are essential because they specifically target those earlier engines. If your truck is showing age, the A-Premium coil pack and plug kit offers the highest value and simplifies the tune-up process. If your coils are fine, the A-Premium Iridium Platinum plug set provides that critical 100,000-mile durability.

For the second-generation Ridgeline (2009-2019+), you have fantastic choices in the NGK and Iridium Platinum categories. The NGK Iridium IX provides peak performance and proven reliability for those who push their trucks hard. Meanwhile, the Iridium Platinum DILZKR7B11G set is the best choice if you demand OEM-level fitment and maximum fuel efficiency for the newer 2016+ engines.

If budget is the primary concern, the NGK G-Power is the clear winner. It provides certified NGK quality and a significant performance boost over basic plugs, making it the most sensible budget-friendly platinum option for later models.

Final Verdict: Our Top Recommendations

Choosing the right plug depends on your specific needs and truck generation:

Top Choice for Modern (2016+) Performance and Efficiency:
The Iridium Platinum Spark Plugs 6 Pack DILZKR7B11G 95350 takes the top spot for newer Ridgeline owners. Its dual-precious metal construction is engineered for the V6’s complex combustion environment, ensuring maximum fuel efficiency and smooth operation for 100,000 miles or more.

Best Performance Upgrade (2009–2019):
If you need high-output and durability without the dual-metal OEM price tag, the 6 pc NGK Iridium IX Spark Plugs are the way to go. They offer fantastic ignition response and are highly respected for reliability in the 3.5L V6 engine.

Best Value & Complete Tune-Up (2006–2008):
For owners of the earliest Ridgeline models, the A-Premium Set of 6 Ignition Coil Pack and Iridium Spark Plugs offers the most comprehensive solution. Replacing both the coils and plugs at once guarantees the entire ignition system is optimized, eliminating potential guesswork related to misfires.

Best Spark Plugs For Honda Ridgeline FAQ

Q1: When should I change the spark plugs in my Honda Ridgeline?

A: Honda generally recommends replacing the original equipment spark plugs (usually long-life Iridium/Platinum) in the Ridgeline’s 3.5L V6 engine every 105,000 miles. However, if you notice symptoms like rough idling, sluggish acceleration, or a drop in fuel economy before that mileage, it’s best to inspect or replace them sooner. If you opt for NGK G-Power (Platinum), a more conservative replacement interval of 60,000–80,000 miles is often recommended.

Q2: What’s the difference between Iridium and Platinum spark plugs for the Ridgeline?

A: Both Iridium and Platinum are precious metals used for their durability and resistance to wear. Iridium has a higher melting point, allowing manufacturers to make the center electrode much finer (fine-wire design). This results in a more concentrated, reliable spark and usually leads to a longer service life (often exceeding 100k miles) compared to Platinum plugs, which offer excellent durability but typically wear slightly faster.

Q3: What are the main signs that I need new spark plugs in my 3.5L V6 engine?

A: Common symptoms of worn-out spark plugs include: engine misfires (feeling a momentary stutter or hesitation, especially under load), poor fuel efficiency (getting noticeably fewer miles per gallon), difficulty starting (slow cranking or weak initial fire), and rough idling (the engine vibrates more than usual when stopped). These signs indicate the plugs are struggling to create a consistent spark.

Q4: Should I use OEM (Original Equipment Manufacturer) plugs or aftermarket options?

A: Many aftermarket manufacturers, particularly NGK and Denso (who often produce the OEM plugs for Honda), create replacement plugs that meet or exceed factory specifications. If you choose high-quality Iridium or Iridium-Platinum options like those reviewed here, performance and longevity will be comparable to OEM, often at a better price point. Always ensure the plugs are the correct heat range and fitment for your specific Ridgeline year.

Q5: Do I need to gap my new iridium spark plugs before installation?

A: Most modern iridium and platinum spark plugs, especially those purchased in pre-packaged sets like the best spark plugs for honda ridgeline, are pre-gapped to factory specifications and should generally be installed as is. Attempting to adjust the gap on a fine-wire electrode can easily damage the delicate tip. Always double-check the box or product specifications, but avoid gapping unless absolutely necessary and you have the proper tools.

Q6: How do spark plugs affect fuel economy in the 3.5L V6?

A: Spark plugs are crucial for fuel economy. A fresh, properly gapped spark plug ensures complete and rapid combustion of the air-fuel mixture. When plugs wear out, the spark becomes weak or inconsistent, leading to incomplete burns (misfires). This wastes fuel and forces the engine to work harder, resulting in a noticeable decline in miles per gallon (MPG). Investing in quality iridium plugs helps maintain optimal efficiency throughout their long lifespan.