Spark Plug for 1989-1995 Porsche 911 - Bosch 7403

Bosch 7403 spark plug for the 1989-1995 Porsche 911 H6 3.6L and the 1992 911 H6 3.3L fires the air-fuel mixture in each cylinder. This Bosch spark plug is a conventional nickel-copper design, and its yttrium-enhanced center electrode gives up to 50% longer performance life than standard copper plugs.

• Heavy-duty center electrode of yttrium-enhanced nickel-copper
• Copper core gives a broader heat range to resist pre-ignition and fouling
• Nickel-plated rolled threads resist corrosion and need no anti-seize
• Angled, ribbed insulator prevents misfire from flash-over
• Metal glass fused resistor for interference suppression

Quick facts

• Part: Bosch 7403 spark plug
• Fits: the 1989-1995 Porsche 911 H6 3.6L and the 1992 911 H6 3.3L
• Condition: New

A worn plug can show up as hard starting, a rough idle or a misfire. Before you replace the plugs for any of those, rule out the ignition wiring and fuel delivery, since a fault in either one looks the same from the driver's seat.

Fits

Spark plugs for the 1989-1995 Porsche 911 H6 3.6L and the 1992 911 H6 3.3L are sold here one per listing. Each of those engines takes six, one per cylinder.

Specifications

In the box

One spark plug.

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