Sierra 18-7098-1 Carburetor Kit for Mercruiser M2/Mercarb Carburetors, 1986 and Newer V-6/V-8 305-350 CID

The Sierra 18-7098-1 Carburetor Kit is a rebuild kit engineered for Mercruiser M2/Mercarb carburetors, restoring correct fuel metering and a tight seal after wear or ethanol-related deterioration takes a toll on the original gaskets and internal components. It is built to the fitment specified for Mercruiser engine serial number ranges 6229718-C856558 and C856559 and above, and covers 1986 and newer MCM 4 cylinder, V-6, and V-8 engines in the 305 and 350 cid range. The kit carries a machined exterior finish and is sized at 6.8 x 6.3 x 1.9 inches, making it a compact, direct rebuild solution rather than a full carburetor replacement.

Sierra manufactures its fuel system parts to meet or exceed the original equipment they replace, so the 18-7098-1 is built as a drop-in match for the Mercruiser carburetor numbers it corresponds to, rather than a generic universal kit. It is intended for boat owners and marine technicians rebuilding an M2/Mercarb carburetor who need OEM-correlated components without sourcing a full replacement carburetor assembly.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7098-1
• Product Type: Carburetor Kit
• Weight: 0.14 pounds
• Product Dimensions: 6.8 x 6.3 x 1.9 inches
• Exterior Finish: Machined
• Carburetor Code and Model: M2/Mercarb
• UPC: 808282241483
• OEM Cross Reference: 1389-9562A1, 1389-815396A2, 1389-815397A2, 9-37612, 3302-804844, 3302-804844001, 3302-804844002, 76086

Fitment

• Mercruiser M2/Mercarb carburetor, engine serial number 6229718-C856558
• Mercruiser M2/Mercarb carburetor, engine serial number C856559 and above
• 1986 and newer Mercruiser MCM 4 cylinder, V-6, and V-8, 305 and 350 cid engines

Replaces (OEM)

• 1389-9562A1
• 1389-815396A2
• 1389-815397A2
• Mallory 9-37612
• Mercruiser 3302-804844
• Mercruiser 3302-804844001
• Mercruiser 3302-804844002
• GLM 76086

Frequently Asked Questions

What does the Sierra 18-7098-1 carburetor kit fit? It fits Mercruiser M2/Mercarb carburetors on engine serial number range 6229718-C856558 and on serial numbers C856559 and above, covering 1986 and newer MCM 4 cylinder, V-6, and V-8 engines in the 305 and 350 cid range.

Is the 18-7098-1 kit compatible with Mercury or GLM part numbers? Yes, the Sierra 18-7098-1 corresponds to Mercruiser carburetor numbers 1389-9562A1, 1389-815396A2, and 1389-815397A2, and cross-references to GLM part number 76086 and Mercury/Mercruiser part number 3302-804844.

Does this kit interchange with Mallory parts? The Sierra 18-7098-1 carburetor kit interchanges with Mallory part number 9-37612.

What are the dimensions of the 18-7098-1 carburetor kit? The kit measures 6.8 x 6.3 x 1.9 inches.

How much does the Sierra 18-7098-1 weigh? This carburetor kit weighs 0.14 pounds.

What finish does the 18-7098-1 kit have? The Sierra 18-7098-1 carburetor kit has a machined exterior finish.

Which carburetor model is this kit designed for? It is designed for the M2/Mercarb carburetor code and model used on applicable Mercruiser engines.

Is the 18-7098-1 an OEM or aftermarket part? The Sierra 18-7098-1 is an aftermarket carburetor kit manufactured to meet or exceed the original equipment part it replaces on Mercruiser M2/Mercarb carburetors.

Can I use this kit with a Sierra replacement carburetor? The Sierra 18-7098-1 kit is intended for rebuilding an existing M2/Mercarb carburetor rather than for use with a separate replacement carburetor assembly.

Does the 18-7098-1 kit fit engines built before 1986? Fitment for the Sierra 18-7098-1 is specified for 1986 and newer MCM 4 cylinder, V-6, and V-8 305 and 350 cid engines, along with Mercruiser engine serial numbers 6229718-C856558 and C856559 and above.

How do I confirm my engine matches the 18-7098-1 kit? Check your Mercruiser engine serial number against the ranges 6229718-C856558 or C856559 and above, and confirm your carburetor is an M2/Mercarb model before ordering the 18-7098-1.