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Bosch 999-170-189-9A Copper Nickel Spark Plug - WR7DC+

Manufacturer

Part Number

999-170-189-9A
Sale Price

$3.90

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Bosch 999-170-189-9A is a WR7DC+ Super copper spark plug designed as original equipment for select high-performance applications. This premium spark plug features advanced materials and engineering to deliver reliable ignition and extended service life.

Key Features:

  • Yttrium-enhanced nickel-copper center electrode for superior reliability and up to 50% longer life versus standard copper plugs
  • Copper core provides broader heat range to resist pre-ignition and deposit buildup
  • Tapered cut nickel chromium ground electrode assists in cold weather starts and increases ignitability
  • Metal glass fused resistor maximizes interference suppression
  • Angular 5-rib insulator design prevents flashover and misfire
  • Nickel-plated rolled threads provide anti-seize and corrosion protection for easy installation and removal

Specifications:

  • Thread diameter: 14mm with 1.25mm pitch
  • Reach: 19mm (3/4 inch)
  • Hex size: 13/16 inch (21mm)
  • Gap: 0.031 inch (0.8mm)
  • Heat range: 7
  • Resistor: 6K Ohm
  • Seat type: Gasket
  • Projected tip design

This spark plug is engineered to meet or exceed OE specifications and is commonly used in Porsche 928 GTS (1993-1995) and 968 (1992-1995) models. OEM part number 999-170-189-9A supersedes 999-170-189-90. Alternative part number: Bosch 7900, 0242235663.

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Many specific details

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