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99917012891/3x6
Product Information
Product Information
Iridium spark plug BPR8EIX - (Bosch ref W3DP / W3DP0)
OE Match iridium spark plug set (Pack of 4) is designed to replicate the original Porsche factory spark plugs in fit, heat range, and ignition performance. . Supplied as a complete set of six, it is specifically suited to the Porsche 930 Turbo (1975–1989).
PACK OF 6

Fits:
Porsche 930 3.0 Turbo 01.75 - 12.77 191kw 260hp Engine type 930.50, 930.52
Porsche 930 3.3 Turbo 06.86 - 08.89 221kw 300hp Engine type 930.66

Porsche 911E 2.0L 09.68 - 12.69 103kw 140hp Engine type 901.09, 901.11
Porsche 911S 2.0L 07.66 - 11.68 118kw 160hp Engine type 901.02 901.08
Porsche 911S 2.0L 09.68 - 12.69 125kw 170hp Engine type 901.10
Porsche 911E 2.2L 09.69 - 12.71 114kw 155hp Engine type 911.01, 911.04
Porsche 911S 2.2L 09.69 - 12.71 132kw 180hp Engine type 911.02

This OE Match iridium spark plug set includes six identical spark plugs, each manufactured to OE-equivalent standards for thread dimensions, electrode design, and thermal performance. The iridium-tipped electrode provides a finer and more consistent spark while offering superior resistance to wear compared to conventional spark plugs.

Turbocharged Porsche engines operate under high temperatures and increased combustion pressure, making ignition quality critical. This OE Match set helps maintain stable ignition, smooth idle, responsive throttle behaviour, and efficient combustion under boost. Replacing all six plugs together ensures balanced ignition across cylinders and reliable performance throughout the rev range.

Designed as direct replacements, these spark plugs install without modification and are ideal for routine servicing, tune-ups, or ignition system maintenance on classic 930 Turbo models.

Each spark plug produces a precisely timed electrical spark to ignite the air-fuel mixture in its cylinder. As a complete set, they ensure uniform combustion across all six cylinders, supporting smooth engine operation and consistent turbocharged performance.

Function:
  Produces a reliable and consistent ignition spark
  Iridium electrodes improve durability and spark stability
  Supports smooth idle, responsive throttle, and efficient combustion
  Direct replacement for compatible Porsche applications

Spark plugs naturally wear over time due to repeated heat cycles, combustion stress, and electrical load. Worn plugs can lead to misfires, rough idle, reduced power, and increased fuel consumption. Choosing an OE Match iridium spark plug helps maintain consistent ignition performance, prolonged component life, and dependable running characteristics that match the original factory intent.

When to replace:
  Engine misfires or rough idle
  Hesitation under acceleration
  Increased fuel consumption
  At manufacturer-recommended service intervals
  During routine tune-ups or ignition system servicing

Related reference numbers
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99917012891
99917012890
99917012891

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