Sierra 18-7774 Compact Aluminum Fuel Water Separator Bracket - Universal, Replaces Mercury and Yamaha Brackets

The Sierra 18-7774 Compact Aluminum Bracket is a fuel water separator filter mounting bracket built for outboard fuel systems, including Johnson/Evinrude (OMC/BRP) applications. Machined from aluminum with a precision powder-coated finish, the bracket is designed as a universal-fit, direct replacement for Mercury and Yamaha fuel water separator brackets, letting boat owners standardize on a single mounting solution across multiple outboard brands.

This bracket is the mounting component of Sierra's 10 Micron Compact Separator Kit, which pairs the 18-7774 bracket with the 18-7865 filter. It uses a 1/4 inch thread size for secure filter attachment. Sierra's compact separator filter system is designed to work with AquaVue and metal drain-bowl separator filters, which allow water to be drained from the filter to extend service life; the AquaVue bowl is intended for outboard, above-deck installations, while USCG regulations require a flame-resistant metal bowl for below-deck use. This 18-7774 listing is for one bracket per package.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7774
• Product Name: Compact Aluminum Bracket
• Material: Aluminum
• Finish: Precision machine powder coated
• Color: White
• Thread Size: 1/4 inch (6.35 mm)
• Fit Type: Universal
• Compatible With: Mercury and Yamaha fuel water separator brackets
• Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.9 pounds
• UPC: 808282232832
• Included Components: 1 bracket per package

Fitment

• Outboard - Johnson/Evinrude (OMC/BRP) fuel systems
• Universal design; direct replacement for Mercury and Yamaha fuel water separator brackets

Replaces (OEM)

• No specific OEM cross-reference numbers listed

Frequently Asked Questions

What is the Sierra 18-7774 bracket used for? The Sierra 18-7774 is a compact aluminum bracket used to mount a fuel water separator filter in an outboard fuel system, including Johnson/Evinrude (OMC/BRP) applications.

Will the 18-7774 bracket fit my Mercury or Yamaha outboard? Yes, the Sierra 18-7774 is a universal-design bracket built as a direct replacement for Mercury and Yamaha fuel water separator brackets.

What material is the 18-7774 bracket made from? It is machined aluminum with a precision powder-coated finish, finished in white.

What thread size does the Sierra 18-7774 bracket use? The 18-7774 bracket has a 1/4 inch (6.35 mm) thread size for attaching the fuel water separator filter.

How much does the Sierra 18-7774 bracket weigh? The Sierra 18-7774 bracket weighs 0.9 pounds.

What are the dimensions of the 18-7774 bracket? The bracket measures 0.39 x 0.39 x 0.39 inches.

Does the 18-7774 come with a filter? This listing includes one bracket per package; the bracket is also sold as part of Sierra's 10 Micron Compact Separator Kit, which pairs the 18-7774 bracket with the 18-7865 filter.

Can I use the AquaVue drain bowl with this bracket's separator system? Yes, Sierra's compact separator system built around the 18-7774 bracket supports AquaVue drain-bowl filters for outboard, above-deck installations.

Is a metal bowl required with this fuel water separator setup? For below-deck installations, USCG regulations require a flame-resistant metal drain bowl rather than the AquaVue bowl on the separator filter used with the 18-7774 bracket.

Is the Sierra 18-7774 genuine Sierra or aftermarket? The 18-7774 is a genuine Sierra part, engineered by Sierra as a universal replacement bracket for outboard fuel water separator systems.

How many brackets come in a package? The Sierra 18-7774 ships with one bracket per package.

What is the part number for the Sierra 18-7774 bracket? The manufacturer part number is 18-7774, marketed as the Compact Aluminum Bracket.