Product Details Details

Genuine Porsche Spark Plug Set — 718 Cayman GT4, GTS 4.0, Boxster Spyder & GTS 4.0 — Set of 6 — Factory Packaging

The 4.0-liter naturally aspirated flat-six is the engine that reminded everyone why Porsche's mid-engined cars exist. When Porsche fitted the GT4 and Boxster Spyder with a version of the 911 GT3's engine, the result was immediate and undeniable — a 718 that finally matched its chassis with an engine worthy of it. Four hundred horsepower, a 7,800 rpm redline, and a character so involving and so alive that it elevated the entire 718 lineup. The GTS 4.0 variants brought that same engine to a wider audience, and the result across all four models is one of the most cohesive and rewarding sports car families Porsche has produced in the modern era. Six cylinders spinning freely to a high redline demand ignition components that can match every revolution.

These are Genuine Porsche spark plugs, a complete set of six, arriving in factory Porsche packaging and sourced through an authorized Porsche dealer. Factory-correct ignition maintenance for the engine that defines the modern 718 at its best.

About the Packaging These spark plugs ship in genuine Porsche factory packaging — exactly as they leave the Porsche parts supply chain.

File Photo Notice The photo shown is a representative file image. Actual plug appearance may vary. This listing covers all compatible models listed below.

When Should You Replace Them? Porsche recommends replacing the spark plugs on these models every 30,000 miles or every three years, whichever comes first. Given the high-revving nature of this naturally aspirated flat-six — and the likelihood that many of these cars see regular track use — we strongly recommend confirming this interval with your owner's manual or a qualified Porsche technician. High-rpm, high-load driving accelerates ignition component wear considerably beyond what street driving alone would suggest, and staying ahead of that service keeps this engine performing exactly as Porsche intended all the way to the redline.

Compatibility

2020–2026 Porsche 718 Cayman GT4
2020–2026 Porsche 718 Cayman GTS 4.0
2020–2026 Porsche 718 Boxster Spyder
2020–2026 Porsche 718 Boxster GTS 4.0

Why Genuine Porsche? A naturally aspirated flat-six producing 400 horsepower and spinning to 7,800 rpm was engineered to a factory specification that demands the same precision in every component that serves it. Genuine Porsche spark plugs are specified to the correct heat range, electrode gap, and thread specification this high-revving engine was designed around — arriving in factory Porsche packaging, sourced through an authorized dealer. For the engine that defines the 718 at its finest, there is no other standard.

Genuine Porsche. Not Aftermarket. Not a Knockoff. Accept No Substitutes.

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Warranty

Porsche Parts Warranty Information — Suncoast Porsche

Understanding your warranty coverage is important. Below is a complete overview of warranty terms for Genuine Porsche OEM parts, aftermarket parts, and closeout items purchased from Suncoast Porsche and SuncoastParts.com.

Warranty Coverage by Product Type

Genuine Porsche OEM Parts — 2-Year Warranty

All Genuine Porsche OEM parts purchased from Suncoast Porsche or SuncoastParts.com come with a 2-year, unlimited mileage, parts-only warranty beginning on the date of purchase.

If your parts are installed at an authorized Porsche Service Center, both parts and labor warranty coverage may apply if the part is deemed defective within the 2-year warranty period. Coverage varies by location — please check with your local Porsche dealer prior to installation to confirm their specific warranty participation, as each Porsche Center is independently owned and operated.

Important warranty notes for online purchases:

Labor, diagnostic, and installation fees are not covered when parts are purchased online from SuncoastParts.com or Suncoast Porsche, unless the parts are installed by an authorized Porsche Service Center
Warranty claims must be processed in person at an authorized Porsche Service Center
Warranty service is honored at any authorized Porsche dealer in the United States, however some dealers may decline warranty claims for parts purchased online or from another dealership — always verify with your local dealer before installation
If a warranty claim is approved and the part was not installed by a Porsche Service Center, installation of the replacement part remains the customer's responsibility
Suncoast Porsche and SuncoastParts.com are not liable for any diagnostic, labor, or installation fees charged by another Porsche Service Center

Aftermarket & Performance Parts

Warranty coverage for aftermarket and performance parts varies by manufacturer. Most carry a 1-year limited warranty. Contact us for specific warranty details on any aftermarket product. Please note that diagnostic time and labor costs for warranty replacements are not covered.

Take-Off & Closeout Parts

All take-off and closeout parts are sold as-is with no warranty and are not eligible for return. Pricing on these items reflects their as-is condition.

What This Warranty Does Not Cover

The following situations and conditions are explicitly excluded from warranty coverage:

Improper Installation or Misuse — Damage resulting from incorrect installation, negligence, unauthorized alteration, or accident. This includes any use in racing, competition, or motorsport applications
Lack of Proper Maintenance — Damage caused by failure to follow the vehicle's recommended Maintenance Schedule, or failure to use the correct fluids, fuel, oil, or lubricants as specified in the Owner's Manual. Proof of proper maintenance is the owner's responsibility — retain all service receipts in case questions arise
Consequential or Economic Losses — Towing fees, rental vehicles, loss of use, loss of time, inconvenience, or any other indirect economic losses
Vehicles Outside the USA & Canada — Parts installed on vehicles registered or primarily operated outside of the United States or Canada are not covered under this warranty

How to Obtain Warranty Service

Installed by an Authorized Porsche Dealer

If your parts were originally installed by an authorized Porsche dealer, warranty repairs may be performed by that same dealer or any other authorized Porsche Service Center in the United States. Please allow a reasonable timeframe for repairs after delivering your vehicle to the dealership.

Installed by an Independent Repair Shop

Please be aware: All warranty claims must be inspected, performed, and documented by factory-trained Porsche technicians at an authorized Porsche dealership. Work performed at an independent repair shop does not qualify for warranty consideration. If warranty coverage is a priority, we strongly recommend having your parts installed at an authorized Porsche Service Center.

Documentation Requirements for Warranty Claims

To process a warranty claim, the servicing Porsche dealer will require:

Your original sales receipt or order confirmation from SuncoastParts.com or Suncoast Porsche
A completed warranty certificate
Proof of proper vehicle maintenance history (if applicable)

Suncoast Porsche retains sales records on file for two years. If you need a copy of your receipt, contact us and we will provide it promptly.

Additional Warranty Terms & Legal Disclaimers

This warranty provides you with specific legal rights. You may also have additional rights that vary by state.

Porsche does not authorize any individual or organization to create additional obligations or liabilities beyond those stated in this warranty. Any implied warranty of merchantability or fitness for a particular purpose is limited in duration to the term of this written warranty. The exclusive remedy under this warranty is the repair or replacement of the defective part.

Suncoast Porsche and SuncoastParts.com shall not be liable for any incidental or consequential damages arising from a breach of this written warranty or any implied warranty.

Some states do not permit limitations on implied warranty duration or the exclusion of incidental or consequential damages — the above limitations may not apply in your state. Additionally, installation of certain parts or accessories may affect your Porsche New Vehicle Warranty. Please consult your authorized Porsche dealer for full terms, or contact us with any questions.

Spark Plug Set - 718 4.0 Liter SKU: SKU718GTPLUGS