• Here is an Ebay auction for one used C5OE head by Ebay member " valhallastudio" with a Buy-It-Now of $589.99:

    Cylinder head with crack in one cylinder. See pictures for condition and what's included.

    See my other Ford parts listed.

    289 HIPO Head Cobra Comet Falcon Fairlane Galaxie Mustang Sprint Tiger Ford USA | eBay

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • Here is an Ebay auction for a pair of used C5OE heads that need work by Ebay member "okeeracer" with a starting bid of $9.99:

    You are bidding on a pair of C5 HIPO heads that were bought as you see them with welds and needed welds. Heads apparently were fixed by prior owner and we know nothing more on them than you see in pictures. They are good wall art. Part will be expensive to ship. Price quoted in auction is east of the Rockies. There is a 30% surcharge for anything west of the Rockies. High bidder pays shipping and handling. I will only ship in United States. If you do not have a shipping address in the United States, please do not bid on auction.

    Mustang / Shelby Other 289 HIPO Models Pair of HIPO Heads Needing Work | eBay

    -Fred-

    This pair of used C5OE heads that need work sold January 2, 2022 on Ebay for $480.00 with 3 bids from 2 bidders.

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • Here is an Ebay auction for a pair of rebuilt C5OE heads by Ebay member "rdwmustangs" with a Buy-It-Now of $3,200.00:

    These are not date code matching but have the same number 20 casting by the valve cover seat area. They were recently rebuilt by a top-level machinist with new guides, valves, springs, retainers, keepers and ARP rocker studs. One head is dated 4G21 (July 4, 1964) and the other is 5C3 (March 3rd, 1965). They Both have C5OE, 65 289 casted into them. Both cylinder heads have been CC'ed and almost identical in volume. I did not install the soft plugs in case you want to use your own but will install what I have in stock if the buyer choses. Would be perfect for a concours or street restoration on your 64-66 Mustang, Shelby, Commet, Fairlane, Cobra, Tiger or Falcon. If any questions, please contact us.

    1965 289 HIPO Heads Rebuilt Shelby Mustang Tiger AC Cobra | eBay

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • Here is an Ebay auction for a pair of rebuilt C5OE heads by Ebay member "rdwmustangs" with a Buy-It-Now of $3,200.00:

    These are not date code matching but have the same number 20 casting by the valve cover seat area. They were recently rebuilt by a top-level machinist with new guides, valves, springs, retainers, keepers and ARP rocker studs. One head is dated 4G21 (July 4, 1964) and the other is 5C3 (March 3rd, 1965). They Both have C5OE, 65 289 casted into them. Both cylinder heads have been CC'ed and almost identical in volume. I did not install the soft plugs in case you want to use your own but will install what I have in stock if the buyer choses. Would be perfect for a concours or street restoration on your 64-66 Mustang, Shelby, Commet, Fairlane, Cobra, Tiger or Falcon. If any questions, please contact us.

    1965 289 HIPO Heads Rebuilt Shelby Mustang Tiger AC Cobra | eBay

    -Fred-

    This pair of rebuilt C5OE heads sold January 27, 2022 on Ebay for $3,200.00.

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • This pair of used C5OE heads are back on Ebay again with no changes:

    1965 1966 Shelby Mustang GT K Code 289 Hipo Heads C5OE | eBay

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • Here is an Ebay auction for a pair of used C5OE heads by Ebay member "valhallastudio" with a Buy-It-Now of $4,399.99:

    Pair of matching date code heads. See pictures for condition and what's included.

    See my other Ford parts listed.

    289 HIPO Heads Cobra Comet Falcon Fairlane Galaxie Mustang Sprint Tiger Ford USA | eBay

    -Fred-

    This pair of used C5OE heads sold February 2, 2022 on Ebay for $2,342.89.

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • The sale price of $2,342.90 is quite a large change from the original Buy-It-Now of $4,399.99.

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • This pair of used C5OE heads received no bids by February 6, 2022 and therefore did NOT sell.

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

    • Official Post

    This pair of used C5OE heads are back on Ebay again with no changes:

    1965 1966 Shelby Mustang GT K Code 289 Hipo Heads C5OE | eBay

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

    • Official Post

    This pair of used C5OE heads received no bids by June 26, 2022 and therefore did NOT sell.

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

    • Official Post

    Here is an Ebay auction for a pair of used C5OE heads by Ebay member "munson6566" with a starting bid of $2,495.00:

    YOU ARE VIEWING A PAIR OF ORIGINAL 1966 FORD MUSTANG 289 H/P CYLINDER HEADS.

    THE PART NUMBER IS : C5OZ 6049 A

    THE ID NUMBER IS : C5OE 5K2 DATES ( OCTOBER 2, 1965 )

    THIS IS A PAIR OF ORIGINAL 1966 FORD MUSTANG 289 H/P CYLINDER HEADS.

    THESE HEADS ARE NICE, NO EXPLOSIONS, CRACKS, HELICOILS OR WELDS.

    THESE HEADS HAVE BEEN PORTED AND THE CHAMBERS POILSHED.

    THE INTAKE PORTS MEASURE 2-1/8th`s INCHES HIGH BY 1-3/16th`s INCHES WIDE.

    THE EXHAUST PORTS MEASURE 1-3/8th`s INCHES HIGH BY 1-1/16th INCHES WIDE.

    THE HEADS USE STOCK SIZE VALVES 1.78 INTAKE AND 1.45 EXHAUST VALVE DIAMETER.

    THE HEADS HAVE CAST IN SPRING POCKETS AND SLOTTED PUSHROD HOLES.

    THE HEADS WILL WORK ON A 289, 302 OR 351 WINDSOR.

    THE HEADS HAVE THE ID NUMBERS OF 19 & 21.

    THE HEADS HAVE THE SAME CASTING DATE 5K2, OCTOBER 2nd, 1965, MIDDLE PRODUCTION 1966.

    THIS AUCTION IS FOR 1 PAIR.

    THIS FITS:

    1966 FORD MUSTANG 289 H/P GT350

    SHIPPING IS FOR THE CONTINENTAL UNITED STATES ONLY( 48 STATES ) .ALASKA,HAWAII,CANADA AND ALL OTHER LOCATIONS SHOULD CONTACT ME FOR A SHIPPING QUOTE .

    I INSURE ALL PACKAGES FOR FULL VALUE,NO EXCEPTIONS !

    IF YOU HAVE ANY QUESTIONS OR NEED MORE DETAILED PICTURES YOU CAN CONTACT THROUGH EBAY

    VISIT MY STORE FOR MORE HARD TO FIND GOOD USED AND NOS FORD CAR AND TRUCK PARTS.

    1966 FORD MUSTANG SHELBY GT350 289H/P HIPO CYLINDER HEADS C5OE 5K2 DATED | eBay

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

    • Official Post

    This pair of used C5OE heads sold July 22, 2022 on Ebay for $2,495.00.

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • This pair of used C5OE heads are back on Ebay again with no changes:

    1965 1966 Shelby Mustang GT K Code 289 Hipo Heads C5OE | eBay

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • This pair of used C5OE heads received no bids by August 14, 2022 and therefore did NOT sell.

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • Here is an Ebay auction for one used C5OE head by Ebay member " valhallastudio" with a Buy-It-Now of $589.99:

    Cylinder head with crack in one cylinder. See pictures for condition and what's included.

    See my other Ford parts listed.

    289 HIPO Head Cobra Comet Falcon Fairlane Galaxie Mustang Sprint Tiger Ford USA | eBay

    -Fred-

    This used C5OE head that needs work sold September 6, 2022 on Ebay for $349.99.

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • This pair of used C5OE heads are back on Ebay again with a new lower starting bid of $2,750.00:

    1965 66 Shelby K Code 289 Hipo Heads Mustang GT 289 high performance 3 Sets Ask | eBay

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • This pair of used C5OE heads received no bids by September 25, 2022 and therefore did NOT sell.

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • Here is an Ebay auction for a pair of used C5OE heads by Ebay member "westcoast66" with a starting bid of $2,499.00 and a Buy-It-Now of $3,250.00:

    Rebuilt Ford 289 HiPo engine heads, ready to install on your engine. Date codes are 5K4 (Oct) 21 and 5L4 (Nov) 19. They have been magnafluxed, pressure tested and peened prior to rebuilding and everything checked out by a reputable engine builder here in Vancouver. The heads have been resurfaced .007”. Valve grind.Intake valves are Elgin HPV-34 1.94 and the exhaust valves are Elgin HPV-35 1.50. Hardened exhaust seats have been installed. One repair has been made with a helicoil inserted in one on the valve cover holes, Shown in picture.The heads will ship in two separate well packed boxes. I will charge the exact shipping fee to the buyers destination, or pick up is also available.

    1965-66 Ford 289K HiPo Heads | eBay

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • Here is an Ebay auction for a pair of used C5OE heads by Ebay member "westcoast66" with a starting bid of $2,499.00 and a Buy-It-Now of $3,250.00:

    Rebuilt Ford 289 HiPo engine heads, ready to install on your engine. Date codes are 5K4 (Oct) 21 and 5L4 (Nov) 19. They have been magnafluxed, pressure tested and peened prior to rebuilding and everything checked out by a reputable engine builder here in Vancouver. The heads have been resurfaced .007”. Valve grind.Intake valves are Elgin HPV-34 1.94 and the exhaust valves are Elgin HPV-35 1.50. Hardened exhaust seats have been installed. One repair has been made with a helicoil inserted in one on the valve cover holes, Shown in picture.The heads will ship in two separate well packed boxes. I will charge the exact shipping fee to the buyers destination, or pick up is also available.

    1965-66 Ford 289K HiPo Heads | eBay

    -Fred-

    This pair of used C5OE heads received no bids by November 2, 2022 and therefore did NOT sell.

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • Here is an Ebay auction for a pair of used C5OE heads by Ebay member "westcoast66" with a starting bid of $2,499.00 and a Buy-It-Now of $3,250.00:

    Rebuilt Ford 289 HiPo engine heads, ready to install on your engine. Date codes are 5K4 (Oct) 21 and 5L4 (Nov) 19. They have been magnafluxed, pressure tested and peened prior to rebuilding and everything checked out by a reputable engine builder here in Vancouver. The heads have been resurfaced .007”. Valve grind.Intake valves are Elgin HPV-34 1.94 and the exhaust valves are Elgin HPV-35 1.50. Hardened exhaust seats have been installed. One repair has been made with a helicoil inserted in one on the valve cover holes, Shown in picture.The heads will ship in two separate well packed boxes. I will charge the exact shipping fee to the buyers destination, or pick up is also available.

    1965-66 Ford 289K HiPo Heads | eBay

    -Fred-

    This pair of used C5OE heads received no bids by November 2, 2022 and therefore did NOT sell.

    -Fred-

    This pair of used C5OE heads are back on Ebay again with the same starting bid of $2,499.00 and a Buy-It-Now of $3,250.00:

    1965-66 Ford 289K HiPo Heads | eBay

    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

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