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Spark plugs, belts, tensioners, etc. at 10Y mark

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Old Apr 5, 2026 | 11:09 AM
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kajtzu's Avatar
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Default Spark plugs, belts, tensioners, etc. at 10Y mark

Hi guys,


I’m coming on 10 years of ownership on my D3 V8 in the near future. Very little issues recently. Just pleasant driving. Knock on wood and all that 😜😅

I was looking at things in the engine I know I should change at that mark:
  • spark plugs, NGK IFR5N10 seems to be agreeable
  • primary (PQR500330) and secondary (PQR500221) belts
  • primary (PGQ500030) and secondary (PGQ500220) pulley tensioners
  • idler pulley (PQR500350)
Now the more difficult questions:
  • Ignition coils? Haven’t touched those, ever, so I guess mine are original. No issues that I’ve noticed. LR wants 120 EUR each, OEM (Delphi or NGK) is 55 eur each… I know which my wallet would prefer.
  • what about the ignition capacitor? It seems that, if it would fail, the car would not start. But does it ever fail?
  • replace water pump while everything around it is off? I’m guessing mine is the one it left the factory with as I haven’t changed it. Do these ever really break?
  • oil pump? Same thing, mine is original but they don’t seem to be a concern on the V8?
The hoses have been changed one at a time over the years so they’re not a problem right now. I replaced the MAF a few years ago and it’s been fine since.

edit: realized I didn’t write my mileage - around 330k km (~ 205k miles).

Grateful for any advice.
 

Last edited by kajtzu; Apr 5, 2026 at 11:42 AM.
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