Description
Mercarb 2-BBL Carburetor Rebuild Kit — Mercury Marine 3.0L / 4.3L / 5.0L / 5.7L
Get your boat running smoothly again with the iFJF Mercarb 2-BBL Carburetor Rebuild Kit. This comprehensive kit fits all Mercury Marine Mercarb 2-barrel carburetors used on 3.0L, 4.3L, 5.0L, and 5.7L stern drive and inboard engines. Includes everything you need — gaskets, float, needle and seat, accelerator pump, and all internal seals.
Key Features
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Float Included: Unlike most "economy" kits, this one includes the float — the most common failure point on marine carbs
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Complete Rebuild Kit: All gaskets, seals, accelerator pump, needle/seat, and float included
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Marine-Grade Materials: Ethanol-resistant gaskets and seals designed for marine fuel environments
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Broad Compatibility: Fits all Mercarb 2-barrel carbs across 3.0L, 4.3L, 5.0L, and 5.7L applications
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Plug & Play: All components manufactured to exact Mercarb specifications
Compatibility
| Engine |
Carburetor |
Applications |
| 3.0L (181 CID) |
Mercarb 2-BBL |
Mercruiser Alpha One, Gen II stern drives |
| 4.3L V6 (262 CID) |
Mercarb 2-BBL |
Mercruiser V6 stern drives |
| 5.0L V8 (305 CID) |
Mercarb 2-BBL |
Mercruiser V8 stern drives |
| 5.7L V8 (350 CID) |
Mercarb 2-BBL |
Mercruiser V8 stern drives (pre-MPI) |
Replaces Part Numbers
- Mercury Marine 3302-804844002
- Mercury Marine 1389-9562A1
- Mercury 3310-861448A1, 864940A01, 864941A01
- Mercury 3310-864942A01, 864943A01, 866140A02
- Mercury 3310-866141A02, 866142A03
- Sierra 18-7097
- Mallory 9-37600
Kit Contents
| Component |
Quantity |
| Float |
1 |
| Needle & Seat Assembly |
1 |
| Accelerator Pump Assembly |
1 |
| Fuel Bowl Gasket |
1 |
| Top Cover Gasket |
1 |
| Base Gasket |
1 |
| O-Ring & Seal Set |
Complete |
| Mounting Hardware & Clips |
As Required |
Why Rebuild Your Mercarb?
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Ethanol Damage: Ethanol-blended fuels deteriorate older gaskets and seals — this kit uses ethanol-resistant materials
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Sinking Float: A fuel-logged float causes flooding and hard starting — this kit includes a fresh float
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Bog on Acceleration: A worn accelerator pump causes hesitation when you throttle up from idle
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Fuel in the Bilge: Leaking bowl gaskets are a fire hazard on boats — rebuild for safety
Frequently Asked Questions
Q: Will this fit my Mercruiser 3.0L?
A: Yes, this kit fits all Mercarb 2-barrel carburetors on Mercury Marine 3.0L through 5.7L stern drive and inboard engines.
Q: Does it come with a float?
A: Yes! Unlike many "budget" kits, this one includes the float — a critical component on marine carburetors.
Q: Is this for a 2-barrel or 4-barrel carb?
A: This is for the Mercarb 2-barrel (2-BBL) carburetor. If you have a Quadrajet or Weber 4-barrel, you'll need a different kit.
Q: Does it work with ethanol fuel?
A: Yes, the gaskets and seals in this kit are ethanol-resistant — suitable for E10 fuels commonly found at marinas.
Q: Do I need any special tools?
A: Basic hand tools are sufficient. A carburetor cleaning dip and compressed air are recommended for cleaning passages before reassembly.
