Picture of leak, replace caliper or just the pin?

[beach]

So finally figured out where my brake leak was, though it was the master cylinder or other line. Nope was the right rear caliper and didn't know b/c if driving it was dry by the time I checked underneath. Did a short drive and tire was wet, had neighbor press the brake and saw fluid leaking/pouring from here:

 

[DJRockit69]

I would just replace the caliper that pin doesnt have any fluid passing through it that pin is what the caliper slides on.

 

[swshawaii]

Agree. No way a slider pin or bore can leak brake fluid. Unbolt the caliper to inspect before buying ANY parts.
Chances are you have a piston seal leaking around the outer boot. Most suggest replacing brake parts in pairs.

 

[ccm2001]

Change the hose and the caliper