Sierra International 18-4229 Thrust Washer, Replaces OMC 319890, Fits Johnson/Evinrude Outboard Motors

The Sierra International 18-4229 is a stainless steel thrust washer engineered as a direct replacement for outboard engine mount applications. This thrust washer sits at the propeller shaft or drive assembly to manage axial load and reduce wear between rotating and stationary components, helping maintain smooth engine operation. It is built for gasoline-powered outboard motors and is compatible with both 2-stroke and 4-stroke engine types, making it a versatile stocking item for engine maintenance and rebuild work.

Constructed from stainless steel for corrosion resistance in saltwater and freshwater marine environments, the 18-4229 is manufactured in the United States and packaged as a single unit measuring 5.13 inches by 4.0 inches by 0.5 inches, weighing 0.17 pounds. It functions as a direct cross-reference replacement for the OMC 319890 thrust washer, and is compatible with Johnson/Evinrude outboard motors. Whether performing a full engine rebuild or replacing a single worn component, this thrust washer offers a precise fit intended to match OEM dimensions and function.

Specifications

• Brand: Sierra International
• Manufacturer Part Number: 18-4229
• Product Type: Thrust Washer
• Material: Stainless Steel
• Package Dimensions: 5.13 inches L x 4.0 inches W x 0.5 inches H
• Weight: 0.17 pounds
• Color: Multi-Colored
• Engine Type: 2 Stroke, 4 Stroke
• Fuel Type: Gasoline
• Mounting Type: Engine Mount
• Country of Origin: United States
• UPC: 808282259099

Fitment

• Johnson/Evinrude outboard motors

Replaces (OEM)

• 319890

Frequently Asked Questions

What does the Sierra 18-4229 thrust washer replace? The 18-4229 is a direct cross-reference replacement for OMC 319890, so any application calling for that number can use this thrust washer.

Is the 18-4229 thrust washer made of stainless steel? Yes, this thrust washer is constructed from stainless steel, chosen for its resistance to corrosion in both saltwater and freshwater marine environments.

What outboard motors is the 18-4229 thrust washer compatible with? This thrust washer is compatible with Johnson/Evinrude outboard motors.

How much does the 18-4229 thrust washer weigh? It weighs 0.17 pounds as packaged.

What are the dimensions of the 18-4229 thrust washer package? The package measures 5.13 inches long by 4.0 inches wide by 0.5 inches high.

Does the 18-4229 work with both 2-stroke and 4-stroke engines? Yes, the Sierra 18-4229 thrust washer is listed as compatible with both 2-stroke and 4-stroke outboard engine types.

Where is the 18-4229 thrust washer installed on the engine? It is an engine-mount thrust washer, positioned to manage axial load between rotating and stationary components on the outboard's drive assembly.

Is this a genuine Sierra International part or a generic aftermarket copy? The 18-4229 is manufactured by Sierra International as a branded replacement part, not an unbranded generic washer.

What fuel type is the 18-4229 thrust washer designed for? It is designed for use in gasoline-fueled outboard motors.

Where is the Sierra 18-4229 thrust washer manufactured? This thrust washer is manufactured in the United States.

How many thrust washers come in one package? The 18-4229 is sold as a single individual thrust washer per package.

Will the OMC 319890 part number cross-reference to the Sierra 18-4229? Yes, OMC 319890 crosses directly to the Sierra International 18-4229 thrust washer.