Spark Plugs

Spark Plugs, WR7 DC+
This BOSCH spark plug set (pack of 6) is a complete ignition service kit designed specifically for the Porsche 911 3.2-litre Carrera (1984–1989) equipped with a catalytic converter. This set includes all six spark plugs required for a full engine replacement, ensuring even combustion and consistent performance across all cylinders.
PACK OF 6

Fits:
Porsche 911 3.2L 1984 - 1989  *with catalyst

Spark plugs are a vital ignition component, responsible for igniting the air-fuel mixture within the combustion chamber. Correct specification is especially critical on catalyst-equipped engines, as incorrect or worn spark plugs can lead to misfires, inefficient combustion, increased emissions, and potential catalyst damage. These Bosch spark plugs are manufactured to the correct heat range and electrode design required for the 3.2 Carrera with catalytic converter.

Produced to OEM standards, Bosch spark plugs provide reliable cold starting, smooth idle, improved throttle response, and stable engine operation under all driving conditions. Their high-quality construction helps reduce fouling and ensures long service life, making them ideal for routine servicing, preventative maintenance, or restoration work on classic air-cooled Porsche 911 models.

 •  Generates a precise spark to ignite the air-fuel mixture
 •  Supports efficient combustion and controlled emissions
 •  Ensures smooth engine running and reliable starting

Key Functions & Benefits:
 •  Genuine Bosch manufacture
 •  Complete set of 6 spark plugs for flat-six engines
 •  Correct specification for catalyst-equipped 3.2 Carrera
 •  OEM-quality ignition performance and durability
 •  Helps maintain fuel efficiency and emissions compliance

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Related, superseded, cross reference or alternative numbers for comparison.

99917015690

The product you are viewing cross references to these numbers

Spark Plugs, WR4CC
The NGK spark plug set (pack of 6) is a complete ignition service solution designed specifically for the Porsche 911 3.2-litre Carrera (1984–1989) without catalytic converter. This set includes all six spark plugs required for a full engine replacement, ensuring even combustion and consistent ignition performance across the flat-six engine.
PACK OF 6

Fits:
Porsche 911 3.2L Carrera 1984 - 1989
* Non Catalyst

Spark plugs are a critical ignition component, responsible for igniting the air-fuel mixture within each combustion chamber. On non-catalyst engines, correct spark plug specification is essential to maintain optimal combustion characteristics, throttle response, and engine efficiency. Incorrect or worn spark plugs can result in misfires, rough idle, loss of power, and increased fuel consumption.

 • Produces a precise spark to ignite the air-fuel mixture
 • Supports efficient combustion and smooth engine operation
 • Helps maintain power delivery and fuel efficiency

Key Functions & Benefits:
•  Genuine NGK manufacture
•  Complete set of 6 spark plugs for flat-six engines
•  Correct specification for non-catalyst 3.2 Carrera
•  OEM-quality ignition performance and durability
•  Long service life with reduced risk of fouling



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

99917015790

The product you are viewing cross references to these numbers