Sierra 18-8358 Lower Unit Seal Kit, Replaces Volvo Penta 876267, for 280DP/290DP Drives

The Sierra 18-8358 Lower Unit Seal Kit supplies the seals needed to reseal the lower unit on Volvo 280DP and 290DP drives. It is built for use during lower unit rebuilds and gear case service, giving the drive a fresh, leak-free seal set rather than requiring individual seals to be sourced one at a time. The kit is round in shape and finished in white.

Sierra manufactures this kit to meet or exceed the performance of the original equipment part it replaces, and it is interchangeable with the Mallory 9-77903 and Volvo Penta 876267 parts, giving buyers a straightforward aftermarket option when the original part number is discontinued or hard to find. As with any lower unit seal component, checking the specific drive model and manufacturer recommendations before ordering helps confirm proper fit. Every Sierra part, including the 18-8358, is backed by Sierra's customer satisfaction warranty.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-8358
• Product Type: Lower Unit Seal Kit
• Color: White
• Shape: Round
• Unit Count: 1
• Weight: 0.15 pounds
• UPC: 808282105525

Fitment

• Volvo 280DP
• Volvo 290DP

Replaces (OEM)

• Mallory 9-77903
• Volvo Penta 876267

Frequently Asked Questions

What does the Sierra 18-8358 Lower Unit Seal Kit fit? The Sierra 18-8358 is designed for use in Volvo 280DP and 290DP drives.

Is the 18-8358 kit interchangeable with OEM parts? Yes, the Sierra 18-8358 is interchangeable with the Mallory 9-77903 and Volvo Penta 876267 parts.

How much does the Sierra 18-8358 Lower Unit Seal Kit weigh? It weighs 0.15 pounds.

What shape and color is the 18-8358 seal kit? The Sierra 18-8358 Lower Unit Seal Kit is round in shape and finished in white.

How many pieces come in the Sierra 18-8358 kit? The 18-8358 is sold as a single unit count kit containing the seals needed for the lower unit service job.

Does Sierra back the 18-8358 with a warranty? Yes, the Sierra 18-8358 Lower Unit Seal Kit is covered under Sierra's customer satisfaction warranty, as are all Sierra parts.

Will the 18-8358 kit work on any Volvo drive? No, this kit is designed specifically for Volvo 280DP and 290DP drives; checking manufacturer recommendations before purchasing helps confirm proper fit for a given application.

Is the Sierra 18-8358 an aftermarket or genuine OEM part? The 18-8358 is a Sierra aftermarket part manufactured to meet or exceed the performance of the original equipment part it replaces.

What is the UPC for the Sierra 18-8358 Lower Unit Seal Kit? The UPC for the Sierra 18-8358 is 808282105525.

What is included in the Sierra 18-8358 kit? The kit includes the Sierra 18-8358 Lower Unit Seal Kit components needed to reseal a Volvo 280DP or 290DP lower unit.