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Discussion Starter #1
Hi All,

If this isn't the correct place to put this message please can a moderator delete it asap and accept my apologies...

We specialise in online spark plug retail. Prices per plug for the Skyline are as follows:

NGK Platinum (standard) PFR6A-11- £11.50 each
NGK Iridium BCPR6EIX-11 - £8.95 each
Denso Iridium IQ20, IQ24 and IQ27 £12 each = NGK heat range 6, 8 and 9.

As some of you are probably aware, the plugs supplied by all the major Jap/US tuning companies are actually manufactured by NGK and Denso, rebadged and sold for half as much again.

All prices include vat and free UK shipping by next day special delivery for sets of six (singles, fours etc standard 1st class. next day subject to time of order). All listed plugs available from stock at time of writing.

Please visit http://www.spark-plugs.co.uk for more information/online order.

Thanks for looking,

Rob Hemsley
 
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So whats the difference between platinum & iridium? I thought platinum were std & iridiums were the upgrade & more expensive?
 

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Discussion Starter #3
Eddie,

I think it's a supply and demand and OEM issue. The standard platinum PFR6A-11 are used in a very limited number of models. The Iridiums (particularly the NGK Iridium IX's) are more generalised - one Iridium plug type can replace half a dozen or more different OEM plugs. The Iridium will almost always outperform the plat because it utilises a smaller centre electrode - this more than makes up for any inconsisteny with the design of the OEM plug (clear as mud?)

NGK platinum=0.8mm centre electrode
NGK Iridium IX=0.6mm
Denso Iridium=0.4mm
The narrower the centre electrode the better the spark (in theory)

When the demand for a particular platinum plug is high (say a standard Ford plug) - the price drops to less than £5 per plug and will offer the same performance and service life as an £11.50 PFR6A-11. BTW - the RRP for the PFR6A-11 is £14.07+VAT (!). Iridiums are all pretty evenly priced.

Hope this is some help,

Cheers,

RobH
 
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