Sierra Elbow Gasket 18-0476-1 (Blocked) for Volvo Penta Exhaust Risers 18-1939, 18-1999

The Sierra 18-0476-1 is a blocked-style elbow gasket designed for closed cooling system exhaust riser installations. It seals the connection between the manifold elbow riser and the exhaust system, and is built to the exact fit required for the 18-1939 and 18-1999 manifold elbow risers. This gasket is also included as a component of the Sierra 18-8535 mounting kit, which is the blocked-gasket mounting package used with these risers.

Because it is the blocked-style gasket, the 18-0476-1 is intended for closed cooling system exhaust setups rather than open-style configurations. Buyers replacing a worn or leaking riser gasket, or assembling a complete blocked mounting kit, can use this part on its own or alongside the 18-8535 kit components. A direct OEM cross-reference to Barr Marine part 01-0105 is available for buyers matching this gasket against an existing part number.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-0476-1
• Type: Elbow Gasket (Blocked)
• Cooling System Application: Closed cooling system
• Compatible Risers: 18-1939, 18-1999
• Included In Mounting Kit: 18-8535
• OEM Cross Reference: Barr Marine 01-0105
• Weight: 0.05 pounds
• UPC: 808282363635

Fitment

• Used with 3 1/2 inch manifold elbow riser 18-1939
• Used with 3 1/2 inch manifold elbow riser 18-1999
• Included in the 18-8535 blocked mounting kit

Replaces (OEM)

• Barr Marine 01-0105

Frequently Asked Questions

What is the Sierra 18-0476-1 gasket used for? It is a blocked-style elbow gasket that seals the connection between a manifold elbow riser and the exhaust system on a closed cooling system setup.

Which risers does the 18-0476-1 gasket fit? The 18-0476-1 is used with the 18-1939 and 18-1999 manifold elbow risers.

Is the 18-0476-1 a blocked or open style gasket? It is the blocked-style elbow gasket, intended for closed cooling system exhaust riser installations rather than open-style setups.

Does the 18-0476-1 gasket come as part of a mounting kit? Yes, the 18-0476-1 elbow gasket is included in the Sierra 18-8535 blocked mounting kit.

Is there an OEM equivalent number for the 18-0476-1 gasket? Barr Marine 01-0105 is the OEM cross-reference number for the Sierra 18-0476-1 elbow gasket.

What is the difference between the 18-0476-1 and 18-2854-1 gaskets? The 18-0476-1 is the blocked-style gasket for closed cooling systems, while the 18-2854-1 is the corresponding 3 inch open-style gasket included in the 18-4364 mounting kit; both are used with the same 18-1939 and 18-1999 risers but are not interchangeable with each other.

How much does the 18-0476-1 elbow gasket weigh? The Sierra 18-0476-1 elbow gasket weighs 0.05 pounds.

Can the 18-0476-1 gasket be used with the 18-4364 mounting kit? No, the 18-0476-1 is the blocked-style gasket used with the 18-8535 mounting kit; the 18-4364 kit uses the open-style 18-2854-1 gasket instead.

Is the 18-0476-1 gasket suitable for Volvo Penta exhaust manifold systems? Yes, the Sierra 18-0476-1 blocked elbow gasket is used in Volvo Penta exhaust manifold riser applications with the 18-1939 and 18-1999 risers.

What cooling system setup requires the 18-0476-1 blocked gasket? A closed cooling system requires the blocked-style gasket design used by the Sierra 18-0476-1.