525 EFI Valve Springs
 

What's a good replacement valve spring for a 2006 525? I'm keeping everything to original specs. Also I understand that Mercury did use Crane valve train parts at one time. Do we know if they were getting the parts directly from Crane or just having Crane do the R&D. Then having some overseas company build them to a lesser QUALITY.

I'm absolutely amazed that know one has chinned in.

Take a look at this thread. Some good info in there.

http://www.offshoreonly.com/forums/g...e-springs.html

Crane or Isky it's kind of a Ford/Chevy thing.

525EFI/600SCI/700SCI Valve Springs
 

The only spring we use on the 525EFI heads are a Mercury replacement made by PAC. Do not pay Mercury Prices, just give us a call!

We have many sets of the shelf if needed along with retainers and acc...

PAC-TVS1631 (dual spring for Merc 525/600/700) $24.87ea