Part#: 999.170.128.90
Availability: Out of Stock
Spark Plug, Bosch W3DPO Discontinued by Bosch; no longer available. This part has been superseded multiple times. It replaces these part numbers: W265P21 999.170.022.91 999.170.034.90 This is a platinum plug as called for by Porsche specifications, and has a heat range of "3". The MFI cars from 1969-74 can also use the Bosch Silver W3CS spark plug as an alternative to the Platinum plug. In the Turbo models, we recommend sticking with the Platinum plug due to the increased cylinder pressures. Spark plugs should be gapped before installation at Porsche specs: 1967-68 Porsche 911S without CDI .35 to .40 mm (.012" to .014") 1969-74 911E, 911S, 911 2.7L Carrera with MFI and CDI .55 mm (.022") 1975-94 3.0L and 3.3L 930 (with CDI) .60 mm +/- .1 mm (.023" +/- .004") These are a non resistor spark plug and conform to the original System Design for total resistance values.
Genuine Porsche These parts come directly from Porsche. We carry a wide range of Genuine Porsche products in stock, and we also add parts to our website upon request if available. We can get many non-stocked Genuine parts within 2-4 business days. Parts from Germany may take 2-3 weeks or more. If time is a significant issue, please contact us before ordering.
All returns require pre-approval. All returns are subject to a 25% restocking fee, with the exception of approved warranty returns, or if we ship a different part number than ordered. We do not accept returns after 30 days. Inspect your order immediately when it arrives. We must be notified within 5 days if there are any missing, damaged, or incorrect parts. Returns (except warranty) won't be accepted if the part: - Has been installed, used, damaged, is dirty or incomplete - Is not sellable as new - Arrived in sealed packaging that has been opened - Is an electrical part, a distributor spring, a custom or cut-to-length item, or a Special Order - Was purchased more than 30 days earlier Parts must be returned properly padded in a sturdy cardboard box. Returns sent in envelopes will be refused. Items damaged in transit to us cannot be refunded. All returns must be shipped prepaid.