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Denso 5345 Iridium Spark Plug – For Porsche 911/Boxster/Cayman/Cayenne/Panamera & Audi TTS (2008-2016)

Denso 5345 Iridium Spark Plug – For Porsche 911/Boxster/Cayman/Cayenne/Panamera & Audi TTS (2008-2016)

DENSO
Availability:
Out of stock
SKU 5345
Sold out
$6.39 - $6.39
$6.39
$6.39 - $6.39
$6.39
CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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The Denso 5345 Iridium Spark Plug is a premium OE-grade replacement plug engineered for many Porsche models (911, Boxster, Cayman, Cayenne, Panamera) and the Audi TT RS. Its ultra-fine iridium tip provides a stable, focused spark for improved combustion efficiency, resulting in smoother idle, better fuel economy, and enhanced throttle response. This plug offers extended service life of up to 60,000 miles, reducing maintenance intervals.

Key Features & Benefits

  • Iridium Construction: Ultra-fine 0.4mm iridium electrode ensures long life and consistent spark.
  • Improved Ignition: Provides a stronger, more reliable spark for better power and fuel economy.
  • OE Replacement: Direct fit for the listed Porsche and Audi applications without any modifications.
  • Extended Service Life: Lasts up to 60,000 miles, far exceeding standard copper plugs.
  • Pre-gapped: Each plug is pre-gapped for easy installation; always verify gap for your engine.

Vehicle Fitment

Make Model Years Engine
Porsche 911 2009–2012 3.8H6
Porsche 911 2012–2016 3.8H6
Porsche Boxster 2009–2012 3.4H6
Porsche Boxster 2013–2016 3.4H6
Porsche Boxster 2016 3.8H6
Porsche Cayman 2009–2012 3.4H6
Porsche Cayman 2013–2016 3.4H6
Porsche Cayman 2014–2016 2.7H6
Porsche Cayman 2016 3.8H6
Porsche Cayenne 2008–2010 4.8V8
Porsche Cayenne 2011–2016 4.8V8
Porsche Panamera 2010–2016 4.8V8
Porsche Panamera 2011–2014 3.6V6
Porsche Panamera 2015 3.0V6
Audi TT RS Quattro 2012 2.5L5
Audi TT RS Quattro 2013 2.5L5

Installation Notes

Confirm spark plug gap per your vehicle’s specifications before installation.

About DENSO

Denso is a world-renowned manufacturer of OE and aftermarket ignition components, known for precision engineering and reliability.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 21 applications
997 911
Make Model Engine Years
Porsche 911 3.8H6 2009–2012
Porsche 911 3.6H6 2009–2012
991 911
Make Model Engine Years
Porsche 911 3.8H6 2012–2016
Porsche 911 3.4H6 2012–2016
987 Boxster
Make Model Engine Years
Porsche Boxster 3.4H6 2009–2012
Porsche Boxster 2.9H6 2009–2012
981 Boxster
Make Model Engine Years
Porsche Boxster 3.4H6 2013–2016
Porsche Boxster 2.7H6 2013–2016
Porsche Boxster 3.8H6 2016–2016
987 Cayman
Make Model Engine Years
Porsche Cayman 3.4H6 2009–2012
Porsche Cayman 2.9H6 2009–2012
981 Cayman
Make Model Engine Years
Porsche Cayman 3.4H6 2013–2016
Porsche Cayman 2.7H6 2014–2016
Porsche Cayman 3.8H6 2016–2016
957 Cayenne
Make Model Engine Years
Porsche Cayenne 4.8V8 2008–2010
958 Cayenne
Make Model Engine Years
Porsche Cayenne 4.8V8 2011–2016
970 Panamera
Make Model Engine Years
Porsche Panamera 4.8V8 2010–2016
Porsche Panamera 3.6V6 2011–2014
Porsche Panamera 3.0V6 2015–2015
8J TT
Make Model Engine Years
Audi TT RS Quattro 2.5L5 2012–2012
Audi TT RS Quattro 2.5L5 2013–2013
Fits 21 vehicle applications Check vehicle fitment before ordering View fitment

About this Spark Plug

The DENSO 5345 spark plug ignites the air and fuel in each cylinder. Worn plugs make the ignition system work harder and can cause misfires, rough running and higher fuel consumption.

Frequently asked questions

How often should I replace spark plugs?

Follow the interval in your car's maintenance schedule. Turbocharged engines and tuned engines often need plugs replaced sooner than naturally aspirated ones.

What are the signs of worn spark plugs?

Misfires or a check-engine light, rough idle, hesitation under acceleration, harder starting, and reduced fuel economy.

Do I need to gap new spark plugs?

Many modern plugs come pre-gapped and some iridium or platinum plugs should not be adjusted. Check the gap against your car's specification and only adjust it carefully if the plug maker allows it.

Can I replace spark plugs myself?

On most engines, yes. Work on a cold engine, blow debris out of the plug wells before removing plugs, thread new plugs in by hand first, and tighten to the specified torque.

How do I make sure this spark plug fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

Euromotiv is an independent retailer of OEM, Genuine, and aftermarket automotive parts. We are not affiliated with, endorsed by, or authorized by Audi AG, Volkswagen AG, BMW AG, Mercedes-Benz Group AG, Dr. Ing. h.c. F. Porsche AG, MINI, or any other vehicle manufacturer. All trademarks, logos, and brand names are the property of their respective owners and are used solely for identification and compatibility purposes.