978428 Spacer Sleeve | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta spacer sleeve, part number 978428, listed in the Fasteners and Fixings group. It sets the standing height or clearance at an assembly, so the joint is built to the dimension the workshop manual calls for. Volvo Penta publishes no fitment, dimensions or assembly detail against this number, so check it against the parts list for your own engine before ordering.

⚙️ Key Features

• Genuine Volvo Penta spacer sleeve
• Fasteners and Fixings group
• Sets a built dimension — measure rather than assume
• No fitment or dimensions published against this number — check it against the parts list for your engine

🔌 Function

Sets the standing height or clearance at an assembly, so the joint is built to the dimension the workshop manual calls for.

⚠️ Common Signs of Failure

• The bolted joint or mounting works loose repeatedly, or knocks and rattles in service
• Visible crushing, ovalling, stepping or scoring of the sleeve when the joint is stripped
• Component misalignment, or uneven wear on the parts the sleeve is meant to hold apart
• Oil weeping from a seal that runs on the sleeve surface

🛠️ Service Notes

• A spacer sleeve sets a fixed length in the joint — never leave one out, shorten one, or substitute a stack of washers, or the clamping load and alignment will both be wrong
• Check that the sleeve is square and fully seated in its counterbore or recess before any fastener is tightened
• Discard a sleeve that is crushed, bell-mouthed, scored or corroded; a shortened sleeve lets the joint be over-clamped and the component distorted
• On sleeves in an oil circuit, make sure the bore is clear and that any seal running on the sleeve has a clean, unscored surface to work against
• Tighten the joint to the figure in the workshop manual for your engine, with the sleeve taking the clamping load rather than the component it protects

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging