Multi-ground electrodes improve ignition capabilities and are less sensitive to increased voltage requirements due to gap growth. Designed to specific manufacturer ignition requirements in either supplementary gap, intermittent discharge, or semi-surface discharge, all for various firing tip self cleaning abilities. Multi-ground plugs maintain all features of ngk's traditional plugs including corrugated ribs, pure alumina silicate ceramic insulator for greater strength and better heat transfer, copper core and triple interior seal. Sold each.

General Fitment

Bosch platinum+4 spark plug has unique revolutionary firing technology combining the advantages of surface air gap technology, nickel-yttrium four ground electrodes and a heat-fused center electrode with pure platinum providing optimum engine performance, smoother acceleration and top fuel efficiency. Sold each, this plug fits these models:

Boxster 1997-04

General Fitment

All motorsport and racing parts are special order items. Special order items must be paid for in advance. Special order items are sold on a non-cancelable, non-exchangeable, non-returnable, non-refundable basis and do not carry any warranty. No exceptions.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

Priced each. Original equipment supplier to Porsche. 2000-up
Known as: spark plug 14fgr 6kqu

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Boxster 1997-04 - Electrical

911 1998-05 - Electrical

Multi-ground electrodes improve ignition capabilities and are less sensitive to increased voltage requirements due to gap growth. Designed to specific manufacturer ignition requirements in either supplementary gap, intermittent discharge, or semi-surface discharge, all for various firing tip self cleaning abilities. Multi-ground plugs maintain all features of ngk's traditional plugs including corrugated ribs, pure alumina silicate ceramic insulator for greater strength and better heat transfer, copper core and triple interior seal. Sold each.

General Fitment

Multi-ground electrodes improve ignition capabilities and are less sensitive to increased voltage requirements due to gap growth. Designed to specific manufacturer ignition requirements in either supplementary gap, intermittent discharge, or semi-surface discharge, all for various firing tip self cleaning abilities. Multi-ground plugs maintain all features of ngk's traditional plugs including corrugated ribs, pure alumina-silicate ceramic insulator for greater strength and better heat transfer, copper core and triple interior seal. Sold each, fits these models:

911 c2/c4 1998-2003 (3.4l)

Boxster 1997-99

Cayenne s 2003-06

Cayenne turbo 2003-06

General Fitment

Platinum multi-ground plug unique firing technology combines the advantages of surface air gap technology and 2 ground electrodes. the 2 ground electrode design not only provides multiple radial spark paths but also the surface air gap design creates optimal plug life. Sold each, this plug fits these models:

Boxster 1997-99

General Fitment

Priced each. Bosch is an original equipment supplier to Porsche.

As of the introduction dates listed below the factory is installing spark plugs with a changed heat range (more favorable cold-start behavior).

New: Bosch fr 7 ldc4 or beru 14 fr 7 ldu

Former: Bosch fr 6 ldc or beru 14 fr 6 ldu

As of 4/23/97, from engine number 65 v 09399

Effective immediately, if spark plug replacement becomes necessary, install the spark plugs with the newly approved heat range. Spark plugs must be of the same heat range in the engine. This applies to engines prior to the above mentioned introduction date.
Known as: spark plug 14fr 7 ldu

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Boxster 1997-04 - Electrical