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Mercarb Carburetor Kit

Mercarb Carburetor Kit

Your Price:$43.95
In Stock
Part Number:PK112

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FL43 Brass Float [+$11.92]
This kit is about as close to a master kit as you will find. Lots of parts not usually found in today's kits. Mercarb marine carburetor rebuild kit. We offer 2 floats for this carburetor. The Nitrophyl float is like the original. Many prefer the brass which is also available.
UPDATE - We discontinued the Nitrophyl float. We have found the current made Nitrophyl float does hold up with today's fuel. We recommend using the brass float. When setting the float level, set it level.

  • Made in USA
  • Includes Power Valve
  • Includes Idle Mixture Screw
  • Includes Fuel Inlet Screen
  • Meets or Exceeds Manufactures Specifications
  • After the Sale Service

Where to find the carburetor number:

Mercarb Identification

Mercury Marine
MCM 120, 140 w/153: 2.5L, 165, 185, 888, 181: 3.0L
w/229 3.7L, 185 w/262 4.3L, 200, 470 w/224 3.7L, 898 w/305 5.0L.
MCM 165 w/224" 3.7L
MCM 165, 175 w/229" 3.7L
MCM 175, 185 w/262" 4.3L
MCM w/262 4.3L
MCM 200, 898 w/305" 5.0L
MIE 5.7L w/350MAG


Don't forget to change the float at rebuild time. These carburetors have nitrophyl floats and they absorb fuel over time. We now have brass floats available for these carburetors.

Your carburetor may only have part of the carburetor stamped on the carburetor. I.E. 1389-9563A1 may be indicated as 9563
Mercarb has 1 idle mixture screw.
2 Jets have 2 idle mixture screws.

Rebuild kit, made in the USA from high quality ethanol ready parts. Everything shown in the photo is included in the kit, additional parts may be purchased by choosing your carburetor type in our main catalog. For additional help including rebuild videos, free manuals, and troubleshooting, please see our technical section

For additional information see related tabs above.

To confirm this kit matches your carburetor number refer to the application/carb tab. To make sure you get the correct carburetor kit, please match your carburetor number with the list provided. This kit is good for the carburetor numbers listed only. No return on opened kits.

5 Stars
I received this carb kit as promised. It is a complete kit for this carb. It was great that both accelerator pumps were in the kit because ther is no way to tell which one was needed till the carb was disassembled. Great price and no hassles. Thank you!!!
Did you find this helpful?  5 of 5 Found Helpful
Reviewed by:  from Minnesota. on 6/26/2016
5 Stars
I wish i would have found mikescarb earlier. it would have saved ALOT of problems and $$$. i wound up buying seperate parts because the supplier said no master kit was available and i wound up buying individual parts at a huge cost. lesson learned? Get parts from Mike !!!
Did you find this helpful?  3 of 3 Found Helpful
Reviewed by:  from landrum sc. on 6/21/2016
5 Stars
I really like this carburator kit, it came with everything that I needed to rebuild the carburetor. One other thing that I liked about it was that it came with both accelerator pumps. I would highly recommend if you're going to build this carburator to get this kit. It's a lot cheaper than I've seen on other sites and still comes with everything that you need.
Did you find this helpful?  3 of 3 Found Helpful
Reviewed by:  from Lawrenceville. on 5/17/2016
5 Stars
This kit had everything I needed to get the job done. The online videos helped me completely re-build the carburetor on my 1992 Sea Ray. This is worth noting because I had never done this before. Great customer service when I called in looking for the correct parts etc. Glad I chose to order this rather than search at local boat stores.
Did you find this helpful?  2 of 2 Found Helpful
Reviewed by:  from Boerne TX. on 6/21/2016
5 Stars
Top quality kit with everything you need for a comprehensive rebuild. Instructions video was great also! I highly recommend this kit if you want to resurrect your carb's performance. Would only suggest one additional thing. Instructions on how to adjust the idle mixture for peak performance would be great.
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by:  from Shelton. on 8/21/2017
5 Stars
carb kit
The service was great and the delelivey was even better but it did not fix my problem. My 4.3 mercruiser starts right up and within a few seconds stalls. I have to pour fuel into the carb to get the electric fuel pump to kick in an then it runs perfect all day.The fuel pump should kick in with the key in the on position. it might have something to do with the oil pressure safety switch, but I am not Sure I think I might need another part. It is a 1997 4.3 lx gen 2 with a 2 barrel carb s/n ok191027. Any help would be appreciated. Fuel pressure is great once I get it started so I know fuel pump is working once I get it running. Again thanks for you service and I would defintely do business with you again. Please help. Ed
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by:  from 200 meadowlark rd. horseheads n.y.. on 8/20/2017
5 Stars
a nobody
Love it worked well the float took a different adjustment than the instructions said but ever carburetor is different
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by:  from Jonesboro Ar.. on 6/5/2016
5 Stars
Nice complete kit just what I needed fast shipping also
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by:  from Holyoke . on 5/10/2016
4 Stars
Arrived on time! The packets look good. I Have not attempted rebuild as yet.
Did you find this helpful?  1 of 3 Found Helpful
Reviewed by:  from Surrey. on 2/12/2016
5 Stars
Office Manager
Great service!
Did you find this helpful? 
Reviewed by:  from Michigan. on 10/8/2018

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