Sierra Seal Ring 18-2519-9, Pack of 2, Replaces Volvo Penta 831891, Fits AQ120B AQ125A AQ125B AQ140A AQ145A AQ145B

The Sierra Seal Ring 18-2519-9 is a rubber sealing ring engineered to meet or exceed original equipment quality for Volvo Penta marine engines. It is sold as a pack of 2, giving you a matched set for a complete service job rather than a single ring that leaves you short. The seal is designed as a direct equivalent to the Volvo Penta 831891 seal ring, making it a straightforward replacement part for routine maintenance or repair work on covered AQ-series engines. Made from rubber, the ring is built to hold a reliable seal against water and fluid intrusion in the areas it is fitted to. Because it ships as a 2-pack, it is well suited to jobs that call for replacing both rings at once, helping ensure a consistent, leak-free seal on both sides of the application. This part fits Volvo Penta AQ120B, AQ125A, AQ125B, AQ140A, AQ145A, and AQ145B engines. Always confirm your engine model against this fitment list before ordering to make sure you select the correct seal ring for your application.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2519-9
• Material: Rubber
• Pack Quantity: 2
• Weight: 0.03 pounds
• Product Type: Seal Ring

Fitment

• Volvo Penta AQ120B
• Volvo Penta AQ125A
• Volvo Penta AQ125B
• Volvo Penta AQ140A
• Volvo Penta AQ145A
• Volvo Penta AQ145B

Replaces (OEM)

• Volvo Penta 831891

Frequently Asked Questions

What engines does the Sierra 18-2519-9 seal ring fit? The Sierra 18-2519-9 seal ring fits Volvo Penta AQ120B, AQ125A, AQ125B, AQ140A, AQ145A, and AQ145B engines.

What OEM part does the 18-2519-9 replace? It replaces Volvo Penta OEM part number 831891, making the Sierra 18-2519-9 a direct equivalent for that seal ring.

How many seal rings come in a pack? The Sierra 18-2519-9 is sold as a pack of 2 seal rings.

What material is the seal ring made from? The Sierra 18-2519-9 seal ring is made from rubber.

How much does the Sierra 18-2519-9 seal ring weigh? Each package of the Sierra 18-2519-9 seal ring weighs 0.03 pounds.

Is the Sierra 18-2519-9 an OEM or aftermarket part? It is an aftermarket Sierra replacement part manufactured to meet or exceed the original equipment quality of Volvo Penta part 831891.

Can I order just one seal ring instead of a pack? No, the Sierra 18-2519-9 is only available as a pack of 2 seal rings.

Will this seal ring fit my Volvo Penta AQ165 engine? No, the Sierra 18-2519-9 is fitted to AQ120B, AQ125A, AQ125B, AQ140A, AQ145A, and AQ145B engines; other AQ-series engines use a different Sierra seal ring part number.

What is included when I purchase this part? Purchasing the Sierra 18-2519-9 gets you a pack of 2 rubber seal rings.

How do I confirm this is the right seal ring for my engine? Check that your engine model is one of AQ120B, AQ125A, AQ125B, AQ140A, AQ145A, or AQ145B, which are the confirmed fitments for the Sierra 18-2519-9 seal ring.