21987331 Reinforcement | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Air-Filter Housing Reinforcement - Part Number: 21987331

Reinforcement insert for the compact TAD5 air-filter and inlet-housing arrangement. It supports the housing under clamp load and engine vibration so the filter remains sealed and correctly shaped.

⚙️ Key Features

• Factory-formed stiffening profile

• Supports the assigned housing or duct

• Maintains shape under vibration and clamp load

• Uses original attachment points

• Correct orientation is required

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21987331 (current listed OEM reference)

OEM / Related Numbers:

• 21987331

• 21637259 - related air-filter assembly

• 21377909 - filter insert

• 21801958 / 21801961 - rubber collars

• 23223194 - adhesive reference

• 60114887 - hose clamp

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• TAD5 air-filter and intake system

Typically suits:

• Engine models:

• TAD540VE

• TAD541VE

• TAD542VE

• TAD550VE

• TAD551VE

• TAD552VE

• HP / Rating: Controlled by the complete engine or drive product number

• Engine / System Type: Inline four-cylinder turbocharged industrial diesel

• Year Range: Production-build controlled; confirm by product and serial number

• Serial / Specification Control: Confirm the air-filter housing version and engine serial number; the reinforcement must match the housing profile.

🔌 Function

Strengthens and stabilises the adjoining component so it retains its designed shape, alignment and clamping load.

Common signs of failure or wear:

• Cracking or fatigue around attachment points

• Distortion or loss of support

• Loose fasteners or fretting

• Chafe against adjoining components

• Vibration or air-leak noise

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging