A carburetor rebuild is one of the best ways to restore crisp throttle response, stable idle quality, and dependable fuel control on a legacy Mercury / Mariner V6 two-stroke. This WMV Carburetor Rebuild Kit is designed for the WMV-series carburetors found on many 1994–2005 Mercury / Mariner 2.5 Liter engines—including AA, BB, CC, EE, and FF blocks—as well as select 3.0 Liter and SportJet 175 / 210 HP applications.
The kit includes the needle and seat assembly along with the core gaskets and service parts normally needed during a standard carb refresh.
What this kit is for
On aged WMV carburetors, varnish, ethanol residue, storage, and normal wear can harden gaskets, affect the needle and seat, and upset fuel metering. A correct rebuild kit helps restore sealing and fuel control without mixing random pieces from generic kits. This kit is intended for WMV carburetors specifically, which matters because Mercury used several V6 carb families over the years.
WMV carburetors covered by this kit
This rebuild kit fits WMV 1, 2, 3, 4, and 5, plus WMV 30, 31, 32, 33, 34, and 39. That covers many of the carbureted Mercury / Mariner 135 HP, 150 HP, 175 HP, 200 HP, 225 HP, XR6, and SST-120 V6 applications still being rebuilt and run today.
Common engine families and model coverage
For the way owners actually search, this WMV rebuild kit is commonly associated with Mercury and Mariner 2.5L V6 carbureted outboards in the 135, 150, 175, 200, and 225 HP range, along with XR6, SST-120, select 3.0L carbureted engines, and SportJet 175 / 210 HP models. MarineEngine parts listings also show Sierra 18-7214 as the carb kit used on a Mercury / Mariner 135 / 140 / 150 / 200 / XR6 carburetor family, which aligns with the core WMV applications.
Because carburetor swaps are common on these engines, the safest way to confirm fitment is to match the WMV carb number and the rebuild-kit part number, not just the horsepower decal on the cowl.
Part numbers and cross-references
This WMV carburetor rebuild kit is commonly referenced by these Mercury and aftermarket numbers: Mercury / Quicksilver: 8107493, Sierra: 18-7214, GLM: 40630
Those are the main numbers buyers will see in Mercury, Sierra, and aftermarket kit listings for WMV carburetors.
Why float height and passage cleaning matter
A rebuild kit only works as well as the rebuild itself. On a WMV carburetor, setting float height correctly is critical because fuel level directly affects idle quality, throttle response, and mixture consistency. Even a new needle and seat will not perform correctly if the float level is off.
It is just as important to clean every small passageway thoroughly during the rebuild. Residue and debris in idle circuits, transfer passages, and small drilled passages can cause poor idle, bogging, uneven fuel delivery, and hard starting even after new parts are installed. Helpful guides on setting float height and proper carb rebuild procedure can be found in the Buckshot Racing #77 Tech Hub (blog), and each kit also includes the exploded diagram from the Mercury Service Manual as a reference.
Why the needle and seat matter
The needle and seat assembly controls fuel entry into the bowl. If it is worn, dirty, or varnished, the carburetor can flood, leak, or meter fuel inconsistently. That can show up as hard starting, poor idle, rich running, or fuel dripping after shutdown. Including the needle and seat assembly in the kit is important because it addresses one of the most common wear points in an older WMV carburetor.
Helpful rebuild note
A rebuild kit restores seals and core service parts, but it does not fix a carb body that is warped, corroded, or physically damaged. Clean every passage thoroughly, inspect the float and bowl condition, confirm the exact WMV number, and set the float height correctly before reassembly. On a Mercury V6 with three carbs, it is also smart to rebuild all three together so fuel delivery stays consistent bank to bank.
Ordering note
Each package includes one (1) WMV Carburetor Rebuild Kit. Three (3) kits are required to rebuild all three carburetors on a complete V6 engine, so be sure to select the correct quantity at checkout. Buckshot Racing #77 also includes the Mercury Service Manual exploded diagram with each kit, which makes the rebuild process easier to follow.
Final take
If you are servicing a Mercury / Mariner V6 WMV carburetor, this kit is the correct rebuild family for many 2.5L, select 3.0L, and SportJet carbureted two-stroke applications. It fits WMV 1–5 and WMV 30, 31, 32, 33, 34, and 39, and it is commonly identified by 8107493, 18-7214, and 40630. Matching the carb number first—and then taking the time to set float height correctly, clean every small passage, and reset idle screws—is the best way to get a successful rebuild.
Feel free to contact Mike Hill at +1-714-697-1716 or mike@buckshotracing77.com for racer-level experience and the best technical support.