Spark plug. Porsche 911 / 924S / 928 / 944 / 912E / 968  ❭  99917015690

Spark plug WR 7 DC+
The spark plug produces a precisely timed electrical spark to ignite the air-fuel mixture within the combustion chamber. This ignition process enables smooth engine operation, efficient fuel burn, and reliable power output.
Sold individually,  4, 6 or 8 required depending on engine type

Fits:
Porsche 911 3.2L  1984 - 89 *with catalyst
Porsche 924S 2.5L 1986 - 1988
Porsche 928S / 928S2 / 928S4 / 928GT 1983 - 1991
Porsche 944 / 944S / 944S2 / 944T 1985 - 1991
Porsche 912E
Porsche 968 1992 - 1995 Coupe

Spark plugs play a critical role in engine efficiency, smoothness, and power delivery. Over time, wear from heat and combustion stress can reduce spark quality, leading to misfires, hesitation, and increased fuel consumption. Replacing worn plugs with an OE Match unit restores proper ignition timing and helps maintain optimal engine performance.

Designed for direct installation with no modification required, this spark plug is suitable for routine servicing, diagnostics, or replacement of individual worn plugs.

Function:
• Generates a consistent ignition spark for combustion
•  Supports smooth idle and responsive acceleration
•  Helps maintain proper fuel efficiency and emissions control
•  Direct-fit replacement for easy installation

A worn or incorrect spark plug can cause rough running, misfires, loss of power, and reduced fuel economy. Using a correct OE Match spark plug ensures ignition performance remains consistent with factory expectations, helping preserve engine reliability and long-term efficiency.

When to replace:
•  Engine misfires or uneven idle
•  Hesitation or reduced throttle response
•  Increased fuel consumption
•  At manufacturer-recommended service intervals
•  During tune-ups or ignition system maintenance

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99917015690

The product you are viewing cross references to these numbers