Sierra Bypass Gasket 18-0141-9, 2-Pack, Force Outboard Powerhead Gasket

The Sierra 18-0141-9 bypass gasket is a powerhead gasket engineered for Force outboard engines, sold as a 2-pack so a spare is always on hand for the next service interval. Bypass gaskets like this one seal the bypass passage on the powerhead, helping maintain proper sealing between mating surfaces during engine operation. Each pack is lightweight at just 0.01 pounds, reflecting its role as a precision-cut sealing component rather than a bulky assembly. Ordering the correct Sierra part number ensures the gasket matches the dimensions and bolt pattern of the original equipment it is designed to seal, which is important for preventing leaks and maintaining compression or fluid pathways within the powerhead. Because it ships two to a pack, boat owners and marine technicians can complete a full gasket replacement or keep a spare on the shelf without ordering twice. This gasket is cataloged under Sierra's Force Outboard Powerhead Gaskets line, making it easy to identify alongside other powerhead sealing components for the same engine family.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-0141-9
• Product Category: Force Outboard Powerhead Gaskets
• Package Quantity: 2 gaskets per pack
• Weight: 0.01 pounds
• UPC: 808282161408

Frequently Asked Questions

How many gaskets come in a Sierra 18-0141-9 pack? Two bypass gaskets ship in every pack of Sierra part number 18-0141-9, so a spare is included with each order.

What is the Sierra 18-0141-9 used for? It is a bypass gasket for the powerhead of Force outboard engines, used to seal the bypass passage during engine operation.

How much does the Sierra 18-0141-9 bypass gasket weigh? 0.01 pounds per pack, reflecting its size as a thin, precision-cut sealing gasket rather than a bulky part.

What category does this gasket fall under? Sierra catalogs the 18-0141-9 under its Force Outboard Powerhead Gaskets line.

Is the Sierra 18-0141-9 sold individually or in a pack? It is sold per 2-pack, not as a single gasket, under Sierra part number 18-0141-9.

What is the UPC for the Sierra 18-0141-9 gasket? 808282161408 is the UPC associated with the Sierra 18-0141-9 bypass gasket 2-pack.

Is Sierra 18-0141-9 a genuine Sierra Marine part number? Yes, 18-0141-9 is the Sierra part number for this bypass gasket, identifying it within Sierra's Force outboard powerhead gasket lineup.

Should I replace both gaskets at once when servicing the powerhead? Since the Sierra 18-0141-9 ships as a 2-pack, both gaskets are available in a single order, making it convenient to replace them together during a service.

Does the Sierra 18-0141-9 include installation hardware? The pack contains the bypass gaskets themselves (two per pack); no additional hardware is specified for this part number.

Why order a spare Sierra 18-0141-9 gasket? Because bypass gaskets are used during powerhead service and can be damaged during removal, having the second gasket from the 2-pack on hand avoids a delay in completing the job.