Here is an Ebay auction for a complete set of 16 NOS C3OZ 6513 A valve springs by Ebay member "valhallastudio427" with a Buy-It-Now of $398.99:
Factory Ford springs, see pictures for condition and what's included. See my other Ford parts listed.
NOS HIPO 289 16 Valve Springs Mustang Fairlane Falcon Tiger Shelby GT350 USA V8 | eBay
-Fred-
This complete set of 16 NOS C3OZ 6513 A valve springs sold April 30, 2025 on Ebay for $398.99.
-Fred-
Display MoreDisplay MoreDisplay MoreDisplay MoreHere is an Ebay auction for a group of 13 NOS C8AZ 6513 B replaced by C9OZ 6513 E valve springs by Ebay member "stilwellsobsolete" with a starting bid of $219.00:
Up for auction is a NOS group of 13 valve springs (all we had) for a 1964-1968 Ford with a 289 HiPo motor (13 pieces, you'll need 3 more, dual spring for HiPo). They are brand new original Ford and in very nice condition (light surface rust as shown). Part number C8AZ-6513-B. "Free Shipping" is to the continental US only but we can ship anywhere for an additional cost. Feel free to email me with any questions or if you need to get in touch with Greg you’ll have to be resourceful. stilwellsobsolete Evansville, Indiana. Thanks for looking.
NOS OEM Ford 1964 1968 289 HiPo 13 Valve Springs Mustang Fairlane 1965 1966 1967 | eBay
-Fred-
WARNING
These are NOT Hipo 289 valve springs as their application is for 69/70 428 CJ and 428 SCJ. There must be some difference or Ford would have replaced the original C3OZ springs with these, but Ford did NOT do that.
CAVEAT EMPTOR!!
-Fred-
This group of 13 NOS C8AZ 6513 B replaced by C9OZ 6513 E valve springs received no bids by May 20, 2024 and therefore did NOT sell.
-Fred-
WARNING
These are NOT Hipo 289 valve springs as their application is for 69/70 428 CJ and 428 SCJ. There must be some difference or Ford would have replaced the original C3OZ springs with these, but Ford did NOT do that.
CAVEAT EMPTOR!!
-Fred-
This group of 13 NOS C8AZ 6513 B replaced by C9OZ 6513 E valve springs are back on Ebay again as a Buy-It-Now of $219.00:
NOS OEM Ford 1964 1968 289 HiPo 13 Valve Springs Mustang Fairlane 1965 1966 1967 | eBay
-Fred-
WARNING
These are NOT Hipo 289 valve springs as their application is for 69/70 428 CJ and 428 SCJ. There must be some difference or Ford would have replaced the original C3OZ springs with these, but Ford did NOT do that.
CAVEAT EMPTOR!!
-Fred-
This group of 13 NOS C8AZ 6513 B replaced by C9OZ 6513 E NON HIPO valve springs sold November 10, 2025 on Ebay for $219.00.
Again CAVEAT EMPTOR!!
-Fred-
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