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Porsche Spark Plug 99917006290 – Bosch WR8DS
Porsche Spark Plug 99917006290 – Bosch WR8DS
Porsche Spark Plug 99917006290 – Bosch WR8DS
Porsche Spark Plug 99917006290 – Bosch WR8DS

Porsche Spark Plug 99917006290 – Bosch WR8DS

BOSCH
Availability:
Out of stock
SKU WR8DS
Sold out
$5.55 - $5.55
$5.55
$5.55 - $5.55
$5.55
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 Bosch WR8DS spark plug (OEM 99917006290) fits several classic Porsche models including the 944 2.5L (1983-1984) and 928 4.5L/4.7L (1978-1984). It provides the reliable ignition needed for these vintage engines, ensuring smooth operation and preventing common spark-related issues. Bosch's platinum construction offers extended service intervals.

Key Features & Benefits

  • Part Number: 99917006290 (OEM cross: Bosch WR8DS).
  • Application: Porsche 944 2.5L (1983-1984), Porsche 928 4.5L/4.7L (1978-1984).
  • Bosch Platinum: Provides longer life and stable performance.
  • OEM Fitment: Direct replacement for original equipment.
  • Corrosion Resistance: Anti-tarnish shell ensures reliable connection.

Vehicle Fitment

Make Model Years Engine
Porsche 944 1983–1984 2.5L4
Porsche 928 1983–1984 4.7V8
Porsche 928 1978–1982 4.5V8

Technical Specifications

Part Number 99917006290
Cross Reference Bosch WR8DS
Brand BOSCH
Type Spark Plug
Electrode Material Platinum (assumed)

Installation Notes

Professional installation recommended; gap should be checked and adjusted to factory specs.

About BOSCH

Bosch is a premier OE supplier for European automobiles, with decades of expertise in ignition technology.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 3 applications
944
Make Model Engine Years
Porsche 944 2.5L4 1983–1984
928
Make Model Engine Years
Porsche 928 4.7V8 1983–1984
Porsche 928 4.5V8 1978–1982
Fits 3 vehicle applications Check vehicle fitment before ordering View fitment

About this Spark Plug

The BOSCH WR8DS 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.