21522420 Shim | Genuine Volvo Penta Part

🔧 Product Description

A genuine 0.25mm adjustment shim used in applicable Volvo Penta DPH and DPR sterndrive bearing-carrier and universal-joint assemblies. It changes the axial stack height so the bearing preload or shaft end float can be set to specification.

🚤 Compatibility

Typically suits:

• Volvo Penta DPH-D1
• Volvo Penta D6-330A-F
• Volvo Penta D6-370A-F
• Volvo Penta D4-260A-F
• Volvo Penta D4-300A-F
• Volvo Penta D6-300A-F
• Volvo Penta D4-225A-F
• Volvo Penta D6-300A-G
• Volvo Penta D6-340A-G
• Volvo Penta D6-380A-G
• Volvo Penta DPH-E
• Volvo Penta D6-400A-G
• Volvo Penta D6-400A-F
• Volvo Penta D4-150A-G
• Volvo Penta D4-230A-G
• Volvo Penta D4-270A-G
• Volvo Penta D4-300A-G

• Engine Family: DPH, D
• HP Range: 150-400 HP
• Year Range: Approximately 2009 - 2020 production-era applications

⚙️ Key Features

• Genuine Volvo Penta precision adjustment shim
• Nominal thickness: 0.25mm
• Used in universal-joint and bearing-carrier setup
• Maintains correct shaft and bearing alignment
• Selected by measurement during drive overhaul
• Engine type: Volvo Penta DPH / DPR sterndrive
• TH=0.25mm (Volvo assembly listing)

🔌 Function

Provides a controlled increase in shim-stack height to establish the required bearing preload or shaft end float.

⚠️ Common Signs of Failure

• Excessive shaft end play
• Bearing noise or overheating
• Gear whine after drive service
• Premature seal or bearing failure
• Metallic debris in the drive lubricant

🛠️ Service Notes

• Shims are supplied in graded thicknesses and exist to bring a setting into specification, so measure with a micrometer and select the thickness the setting procedure for your engine calls for rather than matching one by eye
• Note which shim came from which position on removal and keep them identified — once an assembly has bedded in, shims are not interchangeable between positions
• Check both faces are clean, flat and free of burrs, corrosion and old sealant before fitting; dirt trapped under a shim shifts the setting as surely as the wrong thickness does
• Discard any shim that is dished, cracked, pitted or fretted rather than reusing it, and make sure no old shim has been left behind in the recess
• Recheck the clearance or setting after the assembly is tightened down, because clamping load can change the measurement you took loose

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 3887297 - complete universal joint
• 3843136 - universal-joint spider kit
• 3863084 - sealing ring
• 11043 - roller bearing
• 21511540 - bearing box
• 21522416 - 0.10mm shim
• 21522417 - 0.15mm shim
• 21522419 - 0.225mm shim
• 984290, 984291, 984292, 984293 - additional adjustment shims

📦 Condition

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