C4OF-AL Carburetor

    • Official Post

    Here is an Ebay auction for a C4OF-AL Hipo carburetor by Ebay member "madamerabbitth" with a Buy-It-Now of $4,900.00 or make offer:

    1965 mustang k code autolite hipo 4100.


    This is a genuine 1965 Mustang K Code carburetor. The part number is C4OF AL. The carb has been professionally cleaned and rebuilt. It is ready for a concours mustang high performance 289, k code. I have taken all the photos to identify authenticity. It also comes with an extra kit of parts to freshen the carb should you require that some day. This carburetor will be sold. Not accepting returns or any games. Only bid if you are serious. This is a genuine autolite 4100 HiPo carburetor for a 289 K Code with 271hp. Has the all authentic signs.


    1.12

    C4OF AL

    HiPO

    289

    K Code

    Genuine (not a replica)

    1965 Mustang

    1965 mustang k code autolite hipo 4100 Ford | 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 rebuilt carburetor sold May 12, 2022 on Ebay for $4,200.00.

    -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

  • Here is an Ebay auction for a used C4OF-AL Hipo carburetor by Ebay member "parberr_0" with a Buy-It-Now of $2,900.00 or make offer:

    This is for a 1965 mustang k-code carburetor C4OF AL Just taken off a few months ago. It’s an amazing condition and super rare to find one of these. It has a stampings on the front foot. Look at all the photos and make sure this is the right application for your vehicle questions.Three six 0 306-4023

    1965 Ford autolite K-Code carburetor C4OF AL | 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 used C4OF-AL Hipo carburetor by Ebay member "parberr_0" with a Buy-It-Now of $2,900.00 or make offer:

    This is for a 1965 mustang k-code carburetor C4OF AL Just taken off a few months ago. It’s an amazing condition and super rare to find one of these. It has a stampings on the front foot. Look at all the photos and make sure this is the right application for your vehicle questions.Three six 0 306-4023

    1965 Ford autolite K-Code carburetor C4OF AL | eBay

    -Fred-

    This used C4OF-AL Hipo carburetor sold February 25, 2023 on Ebay for $2,500.00.

    -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

  • Here is an Ebay auction for a used C4OF-AL Hipo carburetor by Ebay member "iceracer1995" with a Buy-It-Now of $2,500.00 or make offer:

    Autolite 4100 4-barrel carburetor carb, ID tag number C5OF-L A 4LA. Lower ear is stamped C4OF-AL. Primary booster stamped M and secondary is BA. I am not familiar with all makes and models this fits. Please verify part number and pics match your application. Carb was rebuilt at one time and ran on an engine. Has sat on the shelf since. Will need a light cleaning/freshen before use. See pics for condition.

    Carburetor can not be returned if installed, ran or has been taken apart. Must be returned in the same condition as shown.

    Please email with any questions before bidding/purchasing.

    Autolite 4100 4-Barrel Carburetor C5OF-L 1965 Ford Mustang K-Code HIPO 289 V-8 | 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 used C4OF-AL Hipo carburetor sold April 15, 2023 on Ebay for $2,500.00.

    -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 used C4OF-AL Hipo carburetor is back on Ebay again as a C5OF-L carburetor by Ebay member "iceracer1995" with a Buy-It-Now of $2,500.00 or make offer:

    Autolite 4100 4-Barrel Carburetor C5OF-L 1965 Ford Mustang K-Code HIPO 289 V-8 | 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

  • The C4OF-AL carburetor is for a PCV system where the C5OF-L is for a road draft tube. Ford simply left the carburetors stamped as C4OF-AL and added the C5OF-L tag. The internal change from the C4OF-AL to C5OF-L was simply 51 primary jets and 70 secondary jets on the C4OF-AL to 52 primary and 68 secondary on the C5OF-L. This carburetor is acceptable to use in either application with only a jet change and use of the tag.

    I figure that the buyer did not really understand what they were buying.

    -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

  • So this carb is a not good one for a hipo kcode, 4 speeds?

    That depends on what you mean. To add to Fred's comments, the C5OF-L carburetor assembly was created for 1965 Fairlanes and Mustangs with manual transmissions and a road draft tube for crankcase ventilation in states that did not require a Positive Crankcase Ventilation (PCV) system. Bob Mannel published that road draft tube vented engines were phased out around or after March 1965. The C5OF-L model could be retuned to suit most stock and modified 260/289/non-Boss 302 engines and vehicle applications. In that sense, it could be tuned to work very well for any High Performance 289 engine or transmission type and or differential gear set.

    With a 4LA dated assembly tag it was probably factory installed in a Mustang or Fairlane with manual transmission and road draft tube crankcase ventilation completed as a running vehicle between sometime in the second half of December 1964 through maybe February 1965.

    Dan

    Edited once, last by Dan Case (April 17, 2023 at 5:05 PM).

  • This used C4OF-AL Hipo carburetor sold again April 17, 2023 on Ebay for $2,500.00.

    -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

  • Here is an Ebay auction for a C4OF-AL Hipo carburetor by Ebay member "shelcobra" with a starting bid of $1,795.00:

    Autolite 4100 4-barrel carburetor carb, ID tag number C4OF- A L. ** The Lower ear is stamped C4OF-AL. ** The carburetor was rebuilt at one time and ran on an engine. ** The carburetor appears complete. ** I am selling the item as a core since it has been on a sheft for years. ** Look at the pictures for more details ** Please review my feedback and bid with confidence **

    1964 1965 289 HIPO AUTOLITE FORD 4100 K CODE 4 BL CARBURETOR C4OF - AL MUSTANG | 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

    Here is an Ebay auction for a C4OF-AL Hipo carburetor by Ebay member "shelcobra" with a starting bid of $1,795.00:

    Autolite 4100 4-barrel carburetor carb, ID tag number C4OF- A L. ** The Lower ear is stamped C4OF-AL. ** The carburetor was rebuilt at one time and ran on an engine. ** The carburetor appears complete. ** I am selling the item as a core since it has been on a sheft for years. ** Look at the pictures for more details ** Please review my feedback and bid with confidence **

    1964 1965 289 HIPO AUTOLITE FORD 4100 K CODE 4 BL CARBURETOR C4OF - AL MUSTANG | eBay

    -Fred-

    This used C4OF-AL Hipo carburetor sold May 1, 2023 on Ebay for $1,952.00 with 2 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

    • Official Post

    Here is an Ebay auction for a used C5OF-L Hipo carburetor by Ebay member "kevin_fisher427" with a Buy-It-Now of $4,500.00 or make offer:

    Selling my clean hipo Autolite 4100 4 barrel carb. It’s a C5OF-L tagged, 4HD date (4th week, August, 1964) coded unit with the expected C40F-AL casting. Booster Venturi’s are coded properly as well (M, BA). Carburetor was rebuilt and refinished around 2003, used for approximately 1,500 miles and presents as an excellent “driver quality plus” right now. You’ll see it’s very clean but will need tuning for your application.

    You can consider welding the foot crack, see pic. It still mounts well with proper, low torque.

    Overall a super clean carb for your k code driver.

    Autolite 4100 4-Barrel Carburetor C5OF-L 1965 Ford Mustang K-Code HIPO 289 V-8 | 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 listing for a C5OF-L Hipo carburetor was ended by the seller June 16, 2023 with the following explanation "This listing was ended by the seller because the item is no longer available".

    -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 used C5OF-L Hipo carburetor by Ebay member "kevin_fisher427" with a Buy-It-Now of $3,500.00 or make offer:

    Would like to sell my clean hipo Autolite 4100 4 barrel carb. It’s a C5OF-L tagged, 4HD date (4th week, August, 1964) coded unit with the expected C40F-AL casting. Booster Venturi’s are coded properly as well, M, BA. Carburetor was rebuilt and refinished around 2003, used for approximately 1,500 miles and presents as an excellent “driver quality plus” right now. You’ll see it’s very clean but could likely use the following:

    - air horn tuning

    - consider welding foot crack, see pic

    Overall a super clean carb for your k code driver that needs a bit of work before prime time.

    Autolite 4100 Hipo Carburetor, Clean, C5OF-L Ford K-Code Mustang Fairlane Comet | 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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