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Spark Plug
Spark Plug
Spark Plug
BOSCH Spark Plug - 7406
Spark Plug
Spark Plug
Spark Plug
BOSCH Spark Plug - 7406

Bosch Spark Plug 7406

BOSCH
Availability:
5+ in stock, ready to be shipped

Ships same or next business day

SKU 7406
$6.16 - $6.16
$6.16
$6.16 - $6.16
$6.16
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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BOSCH

Spark Plug

This product also goes by these part numbers: 101 905 615 A, 101905615A, 7406, 101 905 616, 101905616

This part also goes by the following cross reference.

Cross Reference Part Number: 101905615A, 101905616, 7406

Fits These Vehicles 12 applications
Audi
Make Model Engine Years
Audi A6 Quattro 4.2V8 2000–2011
Audi R8 4.2V8 2008–2010
Audi S4 4.2V8 2004–2009
Audi S5 4.2V8 2008–2008
Audi A6 Quattro 3.2V6 2005–2008
Audi A4 Quattro 3.2V6 2005–2008
Audi A4 3.2V6 2006–2008
Audi A8 Quattro 4.2V8 2000–2006
Audi Allroad Quattro 4.2V8 2004–2005
Audi S8 4.2V8 2001–2003
Volkswagen
Make Model Engine Years
Volkswagen Touareg 4.2V8 2004–2006
Volkswagen Phaeton 4.2V8 2004–2006

Fitment data last updated: 2026-06-30

Fits 12 vehicle applications Check vehicle fitment before ordering View fitment

About this Spark Plug

The BOSCH 7406 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.

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