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Product Information
Product Information
Spark plug WR 7 DC+
This OE Match spark plug set includes four identical spark plugs, each manufactured to OE-equivalent standards for materials, electrode configuration, and thermal performance. Replacing spark plugs as a full set is essential for maintaining even ignition timing and smooth engine operation. Worn or mismatched plugs can cause misfires, rough running, reduced throttle response, and increased fuel consumption.
PACK OF 4

Fits:
Porsche 924S 2.5L 1986 - 1988
Porsche 944 / 944S / 944S2 / 944T 1985 - 1991
Porsche 912E
Porsche 968 1992 - 1995 Coupe

The spark plugs generate precisely timed electrical sparks to ignite the air-fuel mixture within each combustion chamber. As a complete set, they ensure uniform combustion, supporting smooth engine running, efficient fuel burn, and consistent power delivery.

Each spark plug installs without modification, making the set ideal for routine servicing, tune-ups, or ignition system maintenance.

Function:
  Provides reliable ignition across all four cylinders
  Supports smooth idle and responsive acceleration
  Helps maintain fuel efficiency and stable combustion
  Supplied as a complete set for correct engine servicing

Spark plugs wear over time due to heat and combustion stress. Replacing all four plugs together ensures consistent ignition timing, prevents misfires, restores smooth engine operation, and helps protect components such as ignition coils and catalytic converters. Using an OE Match set delivers reliable performance while maintaining correct fit and function.

When to replace:
  Engine misfires or uneven idle
  Reduced throttle response or loss of power
  Increased fuel consumption
  At manufacturer-recommended service intervals
  During routine tune-ups or ignition system servicing



Related reference numbers
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99917015690
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9991701899A

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