Sierra 18-7830 Fuel Filter, 5/16 Inch, Replaces Mercury Marine 35-16494-1 and OMC 398327

The Sierra 18-7830 is a 5/16 inch inline fuel filter built for marine fuel systems, designed to trap contaminants before they reach the carburetor or fuel injectors. It uses a 10 micron filtration rating to catch fine particulate and debris that can clog jets, foul injectors, or cause rough running and stalling. The filter body and hardware are constructed of stainless steel for corrosion resistance in the wet, salt-exposed environment typical of boat engine compartments.

This filter is a direct equivalent for a range of Mercury Marine and OMC fuel filters, making it a straightforward swap when servicing outboard fuel systems that call for those OEM numbers. It installs inline on 5/16 inch fuel line and is intended as a routine maintenance and replacement item, commonly serviced alongside fuel line inspections and carburetor cleaning.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7830
• Item Type: Fuel Filter
• Fuel Line Size: 5/16 inch
• Micron Rating: 10 micron
• Material: Stainless Steel
• Item Diameter: 0.31 inches
• Weight: 0.06 pounds
• Unit Count: 1 count
• Included Components: Fuel Filter

Fitment

Fits marine fuel systems using 5/16 inch fuel line and compatible with applications originally equipped with the Mercury Marine and OMC fuel filters listed below.

Replaces (OEM)

• 35-16494-1
• 35-816296-T1
• 35-816296-1
• 35-816296Q2
• 35-816296T1
• 398327

Frequently Asked Questions

What size fuel line does the Sierra 18-7830 fit? The Sierra 18-7830 fuel filter is sized for 5/16 inch fuel line, with an item diameter of 0.31 inches.

What is the micron rating of this fuel filter? The Sierra 18-7830 has a 10 micron filtration rating, which traps fine particulate and debris before it reaches the carburetor or injectors.

Does the 18-7830 replace a Mercury Marine fuel filter? Yes, the Sierra 18-7830 is a direct equivalent for Mercury Marine part number 35-16494-1.

Is this filter compatible with OMC fuel systems? The Sierra 18-7830 cross-references to OMC part number 398327, making it a suitable replacement for that application.

What other OEM numbers does the 18-7830 replace? In addition to Mercury Marine 35-16494-1 and OMC 398327, the 18-7830 replaces 35-816296-1, 35-816296-T1, 35-816296Q2, and 35-816296T1.

What material is the fuel filter made of? The Sierra 18-7830 is constructed of stainless steel for corrosion resistance in marine engine compartments.

How much does the 18-7830 fuel filter weigh? This filter weighs 0.06 pounds.

How many filters come in the package? The Sierra 18-7830 is sold as a single unit, one fuel filter per package.

Is the 18-7830 the same as the 18-7829 or 18-7831? No, those are different sizes in the same Sierra fuel filter lineup: the 18-7829 is sized for 1/4 inch fuel line and the 18-7831 is sized for 3/8 inch fuel line, while the 18-7830 is the 5/16 inch version.

Is this a genuine Sierra part or an aftermarket copy? The 18-7830 is a genuine Sierra part, sold under Sierra's own part number and warranty.

What is this filter typically used for? The Sierra 18-7830 is used as a routine maintenance replacement item to filter contaminants out of the fuel supply on marine engines using 5/16 inch fuel line.