Sierra 18-7007 Medium Carburetor Kit, Universal Fit, Replaces Mercury Marine 1399-5198 and 1399-5135

The Sierra 18-7007 is a medium carburetor kit built to restore a carburetor to reliable running condition during a rebuild. It is designed as a universal fit part, making it a practical choice when servicing outboard carburetors that call for this rebuild kit rather than a full carburetor replacement. The kit's components are machined, supporting a precise fit during reassembly and helping the carburetor return to proper operating performance after wear or fouling.

This kit is intended for technicians and DIY boat owners performing carburetor maintenance who need a dependable, correctly sized set of rebuild parts rather than sourcing individual pieces separately. Because it is cataloged as a universal fit item, it is suited to a range of carburetor rebuild jobs where the medium kit size is the correct match. Sierra lists this part under Mercury Marine cross-reference numbers, making it straightforward to identify as the correct replacement kit when an OEM number is already known.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7007
• Product Name: Carburetor Kit, Medium
• Fit Type: Universal Fit
• Product Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.03 pounds
• Exterior Finish: Machined
• OEM Cross Reference: 1399-5198, MERCURY MARINE 1399-5135
• UPC: 808282259518
• Category: Mercury Outboard Parts

Fitment

This is a universal fit carburetor kit; specific engine models are not designated.

Replaces (OEM)

• 1399-5198
• MERCURY MARINE 1399-5135

Frequently Asked Questions

What is the Sierra 18-7007 carburetor kit used for? It is a medium-size carburetor rebuild kit used to restore a carburetor's function during service, supplying the components needed to freshen up the carburetor rather than replacing the whole unit.

Does the 18-7007 kit fit my outboard's carburetor? The 18-7007 is cataloged as a universal fit kit, meaning it is designed to fit carburetors that call for the medium kit size rather than one specific listed engine model.

What OEM part numbers does the Sierra 18-7007 replace? This kit corresponds to OEM number 1399-5198 and Mercury Marine number 1399-5135, so either of those numbers can be used to confirm this is the correct kit.

Is the Sierra 18-7007 the same as the Mercury Marine 1399-5135 kit? Yes, 1399-5135 is the Mercury Marine equivalent number for this kit, and 1399-5198 is also listed as an equivalent OEM number for the same part.

How much does the 18-7007 carburetor kit weigh? The kit weighs 0.03 pounds.

What are the dimensions of the Sierra 18-7007 kit? The kit measures 0.39 x 0.39 x 0.39 inches.

Is the Sierra 18-7007 a genuine Sierra part or an aftermarket copy? It is a Sierra-branded carburetor kit, part number 18-7007, cataloged as an active, non-discontinued item.

What finish do the components in the 18-7007 kit have? The components in this kit have a machined exterior finish.

Can I use the 18-7007 kit on any Mercury Marine carburetor? It is listed as universal fit rather than tied to a specific Mercury Marine model, so it should be matched against the carburetor's required kit size or the OEM numbers 1399-5198 and 1399-5135 rather than a specific engine year or model.

What is included in the Sierra 18-7007 carburetor kit? It is sold as a complete medium carburetor kit intended for a single carburetor rebuild.

Why choose the Sierra 18-7007 over buying individual carburetor parts? Buying the complete 18-7007 kit ensures all the rebuild components needed for one carburetor are matched and included together, rather than needing to source each part separately.