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Show Quality Rebuilt Carter Carburetor
Fits 50-52 M38 (Out of Stock)

Part # A17854

Rebuilt Carter YS-637 Carburetor

Our rebuilt Carter carburetors are show quality and have a one-year factory warranty. They are color coded and calibrated and all linkage and hardware is replaced. You wont find a better rebuild anywhere. Guaranteed.

Carter YS-637 (side draft)

4-134 L engine

50-52 M38

Customer core must be sent in prior. Call for details.

Unsure of your Carter number? They are stamped directly into the metal bowl. Check on the middle body for a vertical tag next to the metal accelerator linkage.

Part # Price





Questions & Answers

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Hi, please send me the dimensions of the following carburettors as per your part numbers #923804-A; #647744, A17854 and #923806. I have built a 1953 CJ3B motor in a 1949 CJ3A chassis and body (Tub, fenders and grill)

Willys Jeep Parts Tech:
The F head engine will not allow you to close your hood. The carburetors will be too tall. Email to try to help.

I just went through a YS and have a question about the port on the right side of the venturi with the float bowl facing away from you, not the one with the check ball and weight but across from it, there is a divit that looks like a question mark and a port, air does not blow thru it and I haven't seen where it comes into play downstream in the venturi,what am I missing. Thank you Aaron

Willys Jeep Parts Tech:
Email us a photo of yours and we can help out answer question.

Hi Mike !!! I have a YS carb I purchased from K&W --- I can't get it to idol without the choke engaged and throttle out --- fuel pressure is good. Your thoughts ??? Regards Jerry

Willys Jeep Parts Tech:
Your engine is probably generating poor vacuum. You should be 20 pounds of draw at idle once fully warm and no longer choked. RPM around 475. If you dont have this the carburetor can leak or die because fuel cannot discharge out of the carb properly. I would check your cold valve clearances and use a pressure gauge to check it too.

First -- This is a GREAT service you provide ; so much easier to get answers about specific items -- thanks !!! Looking for a YS-637 w/o a core -- are they available ??

Willys Jeep Parts Tech:
We probably can source you a core. Please email Thanks!

I did not have a carb on my 1952 M38 project when I bought it. How much additional would I have to pay for this carb without a core? It came with a Solex but I want a carter for my project M38. Thanks!

Willys Jeep Parts Tech:
We can try to source you a YS core. Please email to help out.

hi i need a bench set carb to replace the one on my m38 1952 , its a carter YS similar to this but the number on it is 0- 548 will this one fit?

Willys Jeep Parts Tech:
If you have an M38 with a side draft then yours should be stamped 637 on it or have a tag that has those numbers. Please email to help. Thanks!

Hi I live in Sweden and I have a nice M38 (flat fenders) with a Carter YS 637 carburetor.. The carburetor flood the manifold and I have tried everything. Can I send my carburetor by mail and have it rebild with "function guaranteed". I have had the M38 for 10 years. Last summer this problems started. The engine now starts fine run smooth for 30 seconds then start coffing and stops.. When I remove carb there is liquid petrol(gas) in bottom of manifold. Best regards Thomas Bjorkman Falun Sweden .

Willys Jeep Parts Tech:
Yes, send it into us and we can rebuild it for you. Make sure you contact information is in the box. You most likely have a vacuum leak.

I have a 52 willys m38 jeep at idle it floods I took the carb off and ther was gas in the intake manifold do I need a new carb I was thinking of getting a solex carb would that work on my m38 thanks

Willys Jeep Parts Tech:
I would check your timing and fuel pressure. The needle may be stuck open. Call us toll free. We can help you. Ask for Mike M.

I own a Carter YS that’s missing the strainer, nut and gasket. Do you sell those pieces only? It’s been a nightmare to get them here in Brazil

Willys Jeep Parts Tech:
Sorry, I dont have those just by themselves

Hi there! Would you ship to Europe? Need a carburetor for my M38 and I'm in Barcelona, Spain. Can make electronic transfer. Let me know. Thank you very much

Willys Jeep Parts Tech:
Please email and we can go over options.

Hi, I have a CJ3A with maybe Solex type 32PICB, this carb will be fit on my jeep?

Willys Jeep Parts Tech:
923806 would be a good option for you. OR we can rebuild your Carter if you like. Call us toll free and we can go over options.

I have a Carter WO core. Can I send in that for the YS carb?

Willys Jeep Parts Tech:
Please call and ask for Mike M. We can see what we can do for you. Thanks!

Is possible buy M38 carburetor if I pay the core. I don´t have the core and in Europe is very difficult find these carburetors. Thank you in advance Regards

Willys Jeep Parts Tech:
We can try to source. Please email
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