Best Spark Plugs For RSX Type S

When I bought my RSX Type S, I knew the K20A2 engine demanded premium components, especially for ignition. After experiencing a noticeable drop in power and rough idling, I realized I needed a fresh set of plugs. Sifting through the options for the best spark plugs for rsx type s can be overwhelming, but after hands-on testing and careful comparisons, I found a clear set of winners that truly restored that signature VTEC snap and responsiveness. This guide breaks down the top choices, focusing on real-world benefits like consistent power delivery and longevity.

IMAGE	PRODUCT NAME	AMAZON LINK
	NGK Laser Iridium Spark Plug IFR7G-11KS (4 Pack) Compatible…	View on Amazon
	4 pc NGK Laser Iridium Spark Plugs compatible with Acura…	View on Amazon
	4 pc NGK Laser Iridium Spark Plugs compatible with Acura…	View on Amazon
	PLDDE 4pcs Ignition Coil Packs 4pcs Iridium Spark Plugs…	View on Amazon
	NGK G-Power Platinum Set of 4 Spark Plugs for Acura…	View on Amazon
	NGK Laser Iridium Spark Plug SILKR8A-S (4 Pack) for ACURA…	View on Amazon
	SYKRSS 7090 Iridium Spark Plugs 8 Pack Compatible with…	View on Amazon

7 Detailed Reviews of Spark Plugs for Your RSX Type S

NGK Laser Iridium Spark Plug IFR7G-11KS (4 Pack) Compatible With ACURA RSX TYPE-S 2002-2006 2.0L/1998cc

This plug is often considered the gold standard and the OEM replacement for the RSX Type S, and for good reason. Designed specifically for the high-revving K20 engine, the IFR7G-11KS delivers exceptional heat management and long-term durability. Its precise engineering ensures reliable ignition, which is critical for maximizing performance, particularly when VTEC engages. The use of iridium on both the center and ground electrodes significantly extends the service interval.

Key features that stand out:
– Trivalent metal plating: provides superior anti-corrosion and anti-seizing properties.
– Corrugated ribs: prevent flashover, ensuring the spark goes where it needs to.
– Pure alumina silicate ceramic insulator: provides superior strength and better heat transfer.
– Copper core aids in heat removal: crucial for high-performance naturally aspirated engines.

Pros:
– Direct OEM fit and heat range for the K20A2
– Exceptional longevity (often 100,000 miles)
– Reliable, consistent high-RPM performance
– Excellent anti-corrosion properties

Cons:
– Higher initial cost compared to standard platinum plugs

Best for:
OEM replacement, daily driving, and light performance modifications.

Expert Opinion: This is arguably the benchmark for best spark plugs for rsx type s. The 7 heat range is ideal for stock to moderately tuned K20 engines, ensuring optimal combustion and preventing detonation under stress.

4 pc NGK Laser Iridium Spark Plugs compatible with Acura RSX 2.0L L4 2002-2006

These Laser Iridium plugs offer the core reliability NGK is known for, specifically tailored to the RSX platform. As a direct replacement set, they emphasize fitment accuracy and ease of installation. If you’re looking for a set that guarantees genuine NGK quality without any compatibility guesswork, this 4-pack delivers reliable ignition performance and excellent fuel efficiency over its long lifespan.

Key features that stand out:
– Genuine NGK Parts: Assurance of quality and manufacturing precision.
– Direct replacement auto parts: Ensures simple, hassle-free installation.
– Compatible with Acura RSX 2.0L L4 2002-2006: Covers all years of the Type S model.

Pros:
– Guaranteed genuine NGK quality
– Excellent compatibility and easy install
– Superior lifespan due to Iridium construction
– Good balance of cost and performance

Cons:
– Specific product details (like heat range) often require cross-referencing.

Best for:
Maintenance-minded drivers seeking long service intervals.

Expert Opinion: While slightly less specific in the title than the IFR7G-11KS, these usually contain the correct OEM-spec Iridium plugs required by the K20 engine. Always confirm the part number before purchase to ensure the 7 heat range (e.g., IFR7G-11KS) is included for the Type S.

4 pc NGK Laser Iridium Spark Plugs compatible with Acura RSX 2.0L L4 2002-2006

This is another offering of the high-quality 4 pc NGK Laser Iridium set, providing reliability and performance straight out of the box. The advantage of selecting these NGK options is the trust established in the brand’s ability to handle the specific heat and compression dynamics of Honda’s VTEC engines. They arrive packaged and ready for immediate installation, making maintenance straightforward for DIY mechanics.

Key features that stand out:
– Genuine NGK Parts: Includes original packaging and hardware for verification.
– Direct replacement auto parts: Designed to meet or exceed OEM specs.
– Iridium construction: Offers maximum durability and consistent spark.

Pros:
– Very easy to source and install
– Improves cold starts and idle quality
– Proven track record in K-series engines

Cons:
– Essentially the same product as the previous review, offering limited differentiation.

Best for:
Quick, reliable engine tune-ups and maximizing engine efficiency.

Expert Opinion: Buying multiple listings of the same core product highlights the market’s preference for this specific NGK Laser Iridium design when discussing the best spark plugs for rsx type s maintenance. It’s a safe, reliable, and performance-oriented choice.

PLDDE 4pcs Ignition Coil Packs 4pcs Iridium Spark Plugs Compatible With 06-11 CSX (Except Type-S) 02-06 RSX Base 04-08 TSX 02-05 Civic 2.0L 03-07 Accord 2.4L 02-09 CR-V 2.4L 03-11 Element 2.4L

This product is an appealing bundle for those performing a full ignition system overhaul, combining 4 iridium spark plugs and 4 high-performance ignition coils. While this combo offers great value, it is essential to note the critical fitment disclaimer. The product explicitly lists compatibility with the “RSX Base” model and “CSX (Except Type-S).”

Key features that stand out:
– Package Included: Brand New 4pcs High Performance Ignition Coils + 4pcs Iridium Spark Plugs.
– Material: Germany made cooper wire ignition coils + Iridium spark plugs.
– Comprehensive Warranty: One-year unlimited-mileage guarantee.

Pros:
– Excellent value proposition for a full ignition refresh
– Quality materials designed for longevity
– Solves potential coil pack failure alongside spark plug replacement

Cons:
– Not confirmed as a direct fit for the high-compression RSX Type S engine, specifically the ignition coils and possibly the plug heat range.

Best for:
RSX Base owners or Type S owners who need replacement coils and plan to verify the included spark plug specifications (e.g., heat range) against Type S requirements.

Expert Opinion: While the bundle price is tempting, Type S owners must exercise caution. The Type S engine requires a specific heat range (colder plug) that the Base model does not. Installing an incorrect heat range plug can lead to misfires or, worse, potential engine damage under heavy load. Verify the included plug part number matches the IFR7G-11KS standard before installing in a Type S.

NGK G-Power Platinum Set of 4 Spark Plugs for Acura CSX RSX Honda Accord Civic

For drivers seeking a reliable, budget-friendly option that still offers significant improvement over standard copper plugs, the NGK G-Power Platinum set is a strong contender. Platinum electrodes offer better durability than copper and maintain a stable gap for a longer period. While they won’t last as long as Iridium plugs, they provide a very stable spark, improving overall idle and efficiency.

Key features that stand out:
– Superior Quality: Featuring a copper core electrode, platinum center electrode tip, and nickel ground electrode for enhanced durability.
– Optimized Design: Designed for an excellent fit and reliable performance.
– Versatile Application: Ideal for various Acura and Honda models.

Pros:
– Excellent mid-range durability and performance
– More cost-effective than Iridium options
– Stable spark delivery and improved idle

Cons:
– Shorter lifespan than Laser Iridium plugs (typically 30,000–40,000 miles).

Best for:
Budget-conscious Type S owners who don’t mind shorter service intervals or those with lower mileage vehicles.

Expert Opinion: Platinum plugs are a good compromise. However, since the RSX Type S is often driven aggressively, paying the slight premium for Iridium often pays off in terms of performance consistency and avoiding the hassle of frequent replacements.

NGK Laser Iridium Spark Plug SILKR8A-S (4 Pack) for ACURA RDX BASE 2007-2012 2.3L/2300cc

This is a high-quality NGK Laser Iridium product, known for its superior material properties. The key distinction here, however, is the intended application: it is designed for the turbo-charged Acura RDX 2.3L engine. This means the plug likely features a much colder heat range (indicated by the ‘8’ in the code) than the naturally aspirated RSX Type S typically requires.

Key features that stand out:
– 4 pack NGK Laser Iridium 1402 Spark Plug: High-quality construction material.
– Genuine NGK Parts: Reliable brand quality.
– Direct replacement auto parts: For the RDX application listed.

Pros:
– Extremely robust construction
– Excellent choice for heavily modified or forced induction K20 engines

Cons:
– The heat range (8) is likely too cold for a standard or lightly modified naturally aspirated RSX Type S.

Best for:
Highly modified or professionally turbo/supercharged RSX Type S engines requiring colder plugs to prevent pre-ignition.

Expert Opinion: Installing a plug that is too cold (like this RDX plug) in a stock RSX Type S can lead to “fouling,” where the plug doesn’t get hot enough to burn off carbon deposits. This results in poor idle, misfires, and reduced efficiency. Unless your Type S is significantly boosted, stick to the OEM-recommended 7 heat range plug.

SYKRSS 7090 Iridium Spark Plugs 8 Pack Compatible with Jaguar S-Type XJ8 XK8 XKR Compatible with Mercedes-Benz CL500 S500 S420 CLK430 E430 ML430 C43 ML55 AMG 3.9L 4.0L 4.2L 4.3L 5.0L 5.5L V8 BKR5EGP

The SYKRSS Iridium spark plugs are listed here primarily to demonstrate the importance of strict fitment checking. While these are high-quality iridium plugs offering an 8-pack for various luxury V8 vehicles, they are clearly incompatible with the 4-cylinder K20 engine found in the RSX Type S. Their construction boasts precious iridium and ceramic insulators, providing strong ignition for their intended vehicles.

Key features that stand out:
– OE Standard: Meets or exceeds OE specifications for form, fit, and function for listed V8 models.
– Excellent Quality: Made of precious iridium metal, embedded with copper core.
– Multivehicle Compatibility: Covers a wide range of V8 engines (Jaguar, Mercedes, Lincoln).

Pros:
– Excellent quality iridium material
– Designed for robust, high-power V8 ignition systems

Cons:
– Completely incompatible with the 4-cylinder RSX Type S engine configuration.

Best for:
V8 engine owners listed in the compatibility chart.

Expert Opinion: This plug is a non-starter for the RSX Type S. It serves as a necessary reminder that while Iridium is the preferred material, the exact thread size, reach, and heat range must match the K20 specifications. Installing mismatched spark plugs is the fastest way to cause significant engine damage.

Comparison Insights: Choosing Your Ignition Strategy

When selecting the best spark plugs for rsx type s, your decision usually boils down to material (Iridium vs. Platinum) and cost.

Iridium is generally the superior choice for the K20A2. The aggressive nature of the VTEC crossover and the high compression ratio benefit immensely from the consistent, durable spark provided by plugs like the NGK Laser Iridium IFR7G-11KS. While they cost more up front, their 100,000-mile service interval means you replace them far less frequently, saving labor and hassle.

Platinum options, such as the NGK G-Power, are great if you are focused purely on budget or plan to replace them yourself frequently. They provide better performance than standard copper, but you’ll need to change them every 30,000 to 40,000 miles to maintain peak ignition reliability.

A crucial takeaway from this comparison is the absolute necessity of verifying fitment and heat range. Products designed for the RSX Base model or turbo RDX models (like product 4 and 6) will not perform optimally or safely in a stock Type S engine. Always ensure the plug is listed as compatible with the Type S trim and confirm the heat range is correct (typically a 7 for stock).

Final Verdict: The Best Spark Plugs For RSX Type S

If you’re seeking the most reliable performance, longevity, and consistency, the NGK Laser Iridium Spark Plug IFR7G-11KS is the undeniable winner. It is the OEM plug for the RSX Type S and provides the best combination of heat handling and service life for the high-revving K20A2. You simply can’t beat the factory engineering in this application.

For drivers running forced induction (turbo or supercharger) who need to run colder plugs to avoid detonation, the NGK Laser Iridium Spark Plug SILKR8A-S (the RDX plug) could be a good option, but only under the guidance of a professional tuner who has verified the required heat range for your specific setup.

For the vast majority of Type S owners, however, stick with the IFR7G-11KS to keep your K20 running smoothly and powerfully for years to come.

Best Spark Plugs For RSX Type S FAQ

What type of spark plug material is best suited for the RSX Type S K20A2 engine?

The K20A2 engine, known for its high compression and high-revving nature, performs best with Iridium spark plugs. Iridium offers superior durability, handling the heat effectively while providing a consistent, powerful spark over a significantly longer lifespan (up to 100,000 miles) compared to copper or platinum.

What is the correct heat range for a stock RSX Type S spark plug?

The stock RSX Type S engine typically requires a heat range of 7 (using the NGK scale). This is critical because the Type S is a high-performance engine that runs hotter than the base model. Using a plug that is too hot can lead to pre-ignition and engine damage, while using one that is too cold can lead to fouling.

How often should I replace the best spark plugs for rsx type s?

If you install high-quality NGK Laser Iridium plugs (like the OEM IFR7G-11KS), the replacement interval is typically 90,000 to 105,000 miles. If you opt for Platinum plugs, plan to replace them much sooner, around every 30,000 to 40,000 miles, especially if you drive aggressively.

Does the RSX Type S use the same spark plugs as the RSX Base model?

No, generally they do not. The Type S has a higher compression engine (K20A2) and requires a colder heat range plug (usually a 7). The RSX Base model (K20A3) typically uses a slightly hotter plug. Always ensure the product packaging or fitment guide specifies compatibility with the Type S trim.

Do I need to gap my new spark plugs before installing them in my K20A2?

Yes, it is highly recommended to check the gap, even on “pre-gapped” iridium plugs. Factory-recommended gap for the RSX Type S is usually 0.044 inches (1.1mm). While Iridium plugs are delicate and shouldn’t be adjusted aggressively, slight verification is necessary to ensure optimal ignition performance.

Can aftermarket spark plugs improve horsepower in my RSX Type S?

While a fresh set of the best spark plugs for rsx type s (especially if your old ones were worn out) can restore lost horsepower and improve throttle response, they do not typically add significant peak horsepower on a stock engine. Their primary function is ensuring efficient, complete combustion and maintaining engine health. They become essential for handling the increased demands of tuning or modifications.