Factory-Matched Triple Configuration
Includes:
• (1) Tillotson WE18-1D (Center Carburetor)
• (2) Tillotson WE18-20 (Outer Carburetors)
Correct staggered factory configuration used on Mercury / Mariner 40HP 3-Cylinder 2-Stroke engines equipped with butterfly choke system.
Condition Details• Throttle shafts are tight with no perceptible side play
• Throttle plates snap closed firmly and evenly
• Bowls show no corrosion pitting
• Linkage hardware intact
• Clean OEM matched set
These are increasingly difficult to find with solid shafts and clean bowls.
Carburetors are being sold as clean serviceable OEM components. Due to age, gasket inspection and normal service is recommended prior to installation.
Compatible with Mercury and Mariner 40 HP 3-Cylinder 2-Stroke outboards equipped with Tillotson WE18-1D / WE18-20 carburetor sets (butterfly choke configuration).
Fits classic triple-carb platform commonly found in late 1970s–early 1980s engines.
Serial Number VerificationMatch your engine serial number and existing carb tag (WE18-1D / WE18-20) to ensure proper fitment before ordering.
Due to Mercury serial breaks within the 40HP platform, verify carb tag and serial number prior to purchase.
mercury 40 hp carburetors
mercury 3 cylinder carb set
mercury 40 triple carb
mariner 40 hp carburetor
tillotson we18 carb
we18-1d carburetor
we18-20 carb
mercury 3 cyl 2 stroke carbs
vintage mercury 40 hp carbs
classic mercury triple carb