Volvo Penta Compressor Belt Tensioner 22171036 – D4 D6
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Part Number: 22171036
Brand: Volvo Penta
Official Product Type: Automatic Belt Tensioner – Compressor / Supercharger Drive
System: Compressor / Supercharger Belt Drive
Supersedes: 3588305, 3582692, 3847481, 3883784, 21678750, 21786692
Overview
The Volvo Penta 22171036 is the genuine OEM automatic belt tensioner for the mechanical compressor (supercharger) drive belt on selected Volvo Penta D4 and D6 marine diesel engines. It maintains correct spring-loaded pressure on the compressor drive belt as the belt stretches and wears over time, preventing belt slip and keeping the compressor operating reliably.
Important: This tensioner is specific to engines equipped with the mechanical compressor drive system. Not all D4 and D6 engines use this tensioner — confirm your engine model, suffix, and belt-drive diagram before ordering.
Compatible Applications
- Volvo Penta D4-260, D4-270, D4-300, D4-320
- Volvo Penta D6-350, D6-370, D6-380, D6-400
- Volvo Penta D6-435, D6-440, D6-480
- Supported across A-, D-, I-, and G-series configurations on applicable compressor-equipped variants
Confirm the complete engine model, suffix, and compressor belt-drive diagram before ordering. Several belt and tensioner configurations were used across D4/D6 generations.
Serial Number & Fitment Notice
22171036 is specifically associated with engines equipped with the mechanical compressor drive system. Confirm your engine model, suffix, and serial number against the applicable Volvo Penta compressor belt-drive diagram before ordering. Do not order by engine displacement alone.
Superseded Part Numbers
- 3582692 — earlier reference
- 3588305 — earlier reference (see also: Volvo Penta Belt Tensioner 3588305)
- 3847481 — earlier reference
- 3883784 — earlier reference
- 21678750 — earlier reference
- 21786692 — earlier reference
- 22171036 — current OEM part number
Dimensions & Weight
Approximate weight: 0.7 kg. Automatic spring-loaded tensioner assembly. Exact dimensions are not published in current Volvo Penta accessory literature — confirm by part number and serial number match to the compressor belt-drive diagram.
When to Replace
Replace the tensioner if it develops excessive pulley movement, bearing noise, binding, weak spring pressure, uneven belt tracking, or an inability to maintain proper compressor belt tension. A failing tensioner can cause belt squeal, slipping, and premature belt wear. Inspect the tensioner at every belt service.
Installation Notes
Inspect the compressor drive belt and adjacent idler/guide pulley whenever replacing the tensioner. Related components in the compressor belt drive system include:
- Volvo Penta Idler Pulley 3847482 — guide/idler pulley in the compressor belt drive
- Compressor drive belt 23324914 (not currently listed — contact us to source)
After installation, verify that the belt is correctly routed and centered on every pulley before running the engine. Follow the applicable Volvo Penta workshop procedure for tensioner installation and belt routing.
Related Parts
- Volvo Penta Idler Pulley 3847482 — companion idler/guide pulley in the compressor belt drive system
- Volvo Penta Belt Tensioner 3588305 — earlier tensioner superseded by 22171036
- Volvo Penta Belt Tensioner 21424647 — alternate Volvo Penta belt tensioner; verify application
- Volvo Penta Drive Belt 22029635 — Volvo Penta OEM drive belt; verify application to your engine
Technical FAQ
Q: Is this the main accessory belt tensioner or the compressor belt tensioner?
A: 22171036 is the compressor / supercharger belt tensioner. It is not the main accessory or alternator belt tensioner. Confirm your engine’s belt-drive diagram to identify the correct tensioner for your application.
Q: Does 22171036 replace 3847481?
A: Yes. 22171036 is the current OEM part number that supersedes 3847481 and several other earlier references (3582692, 3588305, 3883784, 21678750, 21786692).
Q: How do I know if my D4 or D6 uses this tensioner?
A: Confirm by checking your engine model, suffix, and serial number against the Volvo Penta compressor belt-drive diagram. Not all D4 and D6 engines are equipped with the mechanical compressor drive system.
Q: Should I replace the belt and idler pulley at the same time?
A: Yes — when replacing the tensioner, inspect and replace the compressor drive belt and idler pulley (3847482) at the same service. Replacing only the tensioner while leaving a worn belt or pulley in place reduces the benefit of the repair.
Parts Desk Insights
The key distinction with 22171036 is that it tensions the compressor/supercharger belt, not the main accessory or alternator belt. On D4 and D6 engines, several belt and tensioner configurations were used across generations, so matching the exact belt-drive diagram is essential. If a customer references one of the older part numbers (3847481, 3883784, 21678750, etc.), confirm that 22171036 is the current supersession for their specific engine before processing the order. Also recommend inspecting the idler pulley (3847482) and compressor belt at the same service — a tensioner replacement is the right time to address all three components.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
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Packaging must be undamaged and suitable for resale
Important:
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