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DENSO iridium spark plug IKBH20TT - £6.65 each


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Definitely check them before use - they are a sourced part, not direct from the manufacturer or a named trusted source so be suspicious of them at that price until you can verify they are genuine. A lot of these as you probably know have been faked and sold through the usual auction sites and can kill your car so be very careful. 

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I would send them to this guy for testing first, the last thing you want is the iridium tip coming off in the engine!

Warning heavy reading but great on a long haul flight if we could get one.

http://koral.ise.pw.edu.pl/~rrom/SPIE/SPIE10159-STL2016Jastarnia/papers/101590T.pdf

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2 hours ago, is200 Newbie said:

Definitely check them before use - they are a sourced part, not direct from the manufacturer or a named trusted source …

Out of interest, how do you know they’re not sourced from the manufacturer or a trusted source? Please clarify. 
Thanks 🙂

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Cost mainly. These are usually around £10 each (usually £70 for 6) - its one part i would only purchase from Lexus just for the piece of mind (Lexus Birmingham online supply them). Its not a job you want to do to install them and they fall to bits due to the heat and its also not a job that's easy to do on a regular basis. Fine if you want to risk stripping the engine block down to fish out the broken bits f they dont goose the engine and for the sake of another £30 i woudl go for the piece of mind.

Out of curiosity what's the cars mileage? - Lexus main service point job at 60k is to replace them but loads of people that have replaced them (including myself), even at 100k have noted that they still look like new.

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