What is the most expensive parts of trucks?

The nut holding the steering wheel

 

Yes, I believe if they’d have charged the extra $1.50, it’d have thrown the mechanic into a higher tax bracket.

 

Fuel tank

 

From my experience the most expensive is proprietary parts.

the ones you can’t get on a Saturday or a Sunday.

Example: A simple $7 air fitting put me out of service for 3 days. Only at a dealership can you get them.

 

Obviously rebuilds. I spent 20k on a full rebuild two years ago ish. Tires, rear ends, trans. I’d say the average repair bill is 2k with normal faulty issues

 

so thankful I’m running a series 60. My turbo is 900$