I believe it can easily be that high.
If you pay someone else to do it for you (like a service centre)
If you use the genuine Nissan set of injectors (cheapest genuine Nissan part I found was around $650/pop) $$$ (But the bosch part of e-bay goes for around $320/pop and they are allegedly made in Japan...)
If you replace the whole system, including the common rail, high pressure diesel pipes, low pressure diesel hoses. (The genuine common rail itself is around $0.9k, plus the high pressure pipes are $50-$100 depending on which one)
And if you want to replace the diesel pump with a genuine Nissan part too, you're well over $5k - no questions asked.
With that said, there is an alternative route:
You do the work yourself.
You use the cheaper bosch parts off ebay.
You have the diesel pump rebuilt instead of buying a new one.




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