20903104 Sleeve | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta precision sleeve used as a guide, spacer, support or protected bearing surface in its catalogued assembly. The sleeve's length, bore and outside diameter maintain alignment and prevent the fastener or moving part from wearing directly against the surrounding housing. Catalogue application: Cylinder-head sleeve used with O-ring 20903092.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD560VE
• Volvo Penta TAD561VE
• Volvo Penta TAD734GE
• Volvo Penta TAD752GE
• Volvo Penta TAD753GE
• Volvo Penta TAD754GE
• Volvo Penta TAD765VE
• Volvo Penta TAD764VE
• Volvo Penta TAD763VE
• Volvo Penta TAD762VE
• Volvo Penta TAD761VE

• Engine Family: TAD

⚙️ Key Features

• Genuine Volvo Penta Sleeve - part number 20903104
• Controlled inside and outside diameters
• Exact length maintains spacing and installed height
• Provides a replaceable wear or guide surface
• Supports clamp load without crushing softer components
• Maintains concentric alignment through vibration
• Must be installed in the specific catalogue position and orientation
• Engine type: D5/D7-series cylinder-head installations

🔌 Function

The sleeve establishes a controlled cylindrical interface. Depending on the assembly, it guides movement, supports a fastener, prevents side loading or fixes the distance between adjoining components.

⚠️ Common Signs of Failure

• Bore becomes oval or scored
• Sleeve ends fret or collapse
• Excessive play develops at the supported component
• Assembly binds because the sleeve is distorted
• Incorrect length changes alignment or clamp load

🛠️ Service Notes

• Check which way round the sleeve goes before the old one comes out — sleeves are rarely symmetrical, and one end is usually chamfered or stepped to lead into the bore
• Clean and inspect the bore it seats in; a sleeve takes its final shape and fit from that bore, so corrosion, scoring or an oval bore will spoil a new part
• Draw or press the sleeve in square with the correct tool rather than driving it in — a sleeve started crooked will nip, and the material displaced by a hammer blow never fully recovers
• Renew any O-ring, seal or gasket that seats against the sleeve while it is out, and lubricate on assembly as the manual for your engine specifies
• Confirm the sleeve is fully home to the depth or flush condition the workshop manual gives before reassembling anything on top of it

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20903104 → Supersedes 20834018

OEM / Related Numbers

• 20834018 earlier number superseded by this part

Other-Brand OEM Numbers

• VOE20903104

📦 Condition

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