Multiple listings for the same brand and type of part merely indicate different suppliers. Unless otherwise noted, they are the same part.

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Bosch Spark Plug Wr5dc+ - New/Replacement

V99917016590

Resistor type plug. wr5dc 7992

$3.30
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Spark Plug 2,0t,2,2t,2,4t,2,7,924-85 W 5rdc+... - New/Replacement

T99917016590

This part is no longer available.

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Spark Plug W5dc - Genuine Porsche

G99917016590

Known as: spark plug - beru - / spark plug 225 ea 0.7 / spark plug - Bosch -

$13.31
QTY: 

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Ngk Spark Plug W5dc - New/Replacement

R99917016590

Non-resistor type plug.

$4.10
QTY: