The gen nissan chains are made to length, so you will need to remove sprockets to get chains off.
Replacement chains have joiner, so easy putting on/off.
The oil pump tensioner is not self adjusting.
This is a problem and needs adjustment.
If rubber is worn then it's worth replacing.
The $235.00 Kit as pic contains,
3 x guides.
1 x tensioner.
2 x chains.
1 x front cover crank oil seal.
Recon for 150 thou+ wear "n" tear, the kit is excellent idea.
Every engine is different here, wife car is 250thou and needed manual tensioner adjustment, but wish I priced kit and would have done this instead for the peace of mind anyway.
Sons ,oil chain tension had been wanting for some time.
It had folded teeth over a bit on pump sprocket.
Lucky fair price, available genuine only, $65.
If you know your way around this sort of job, then 1 solid weekend will see this job sorted.
You will need a good selection of tools .
Removing the sump is part of the job.
Oil and new coolant.
belts, thermostat , idler pulley maybe etc.
Its 1 of those job you can find yourself doing more as you start to look.
Consult a manual first, Any ? post me.
I'll try to help out, "if I can find time".
Cheers
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