Spark plug (PACK OF 6). Porsche 911 3.2L 1984 - 89 *with catalyst  ❭  99917015690

Spark plug WR 7 DC+
OE Match spark plug set (pack of 6) designed as a direct replacement for Porsche factory spark plugs in fit, heat range, and ignition performance. Supplied as a complete set of six, it is intended for Porsche six-cylinder engines requiring this spark plug specification.
PACK OF 6

Fits:
Porsche 911 3.2L  1984 - 89 *with catalyst

Replacing spark plugs as a complete set is essential for maintaining even ignition timing and smooth engine operation. Over time, worn or mismatched plugs can cause misfires, hesitation, reduced throttle response, and increased fuel consumption.

All spark plugs install without modification, making this set ideal for scheduled servicing, tune-ups, or ignition system maintenance.

The spark plugs generate precisely timed electrical sparks to ignite the air-fuel mixture in each combustion chamber. As a full set, they ensure uniform combustion across all six cylinders, supporting smooth engine operation, efficient fuel burn, and consistent power delivery.

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

Spark plugs naturally wear due to heat, combustion pressure, and electrical stress. Replacing all six plugs together ensures consistent ignition timing across cylinders, prevents misfires, restores smooth performance, and helps protect ignition coils and catalytic converters. Using an OE Match set maintains reliable performance without compromising fit or function.

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

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