Volvo Penta Serpentine Drive Belt 3586326 | 4.3L 5.0L 5.7L Gasoline OEM
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Volvo Penta 3586326 – Serpentine Drive Belt
Part Number: 3586326
Brand: Volvo Penta
Official Product Type: Serpentine Accessory Drive Belt (OEM)
Supersedes: No prior part number on record
Replaced By: No current supersession — 3586326 is the active OEM number
Engine Family: Volvo Penta 4.3L, 5.0L, and 5.7L Gasoline Marine
System: Accessory Drive — Alternator, Tensioner, Idler, and Circulation Pump
Diagram Position: Item 19 in applicable Volvo Penta serpentine belt assemblies
Weight: 0.7 kg (1.5 lb)
The Volvo Penta 3586326 is a genuine OEM serpentine accessory drive belt for selected 4.3L, 5.0L, and 5.7L gasoline marine engines. It runs the full accessory drive system — alternator, automatic belt tensioner, idler pulley, and circulation pump — from the crankshaft pulley. This is a full serpentine multi-rib belt, not a single-groove V-belt, and it is not interchangeable with serpentine belts used on closely related engine variants. Confirm your complete engine model suffix and serial number before ordering.
Compatible Applications
Verify your full engine model suffix and serial number before ordering.
- Volvo Penta 4.3GXi-E / 4.3GXi-EF
- Volvo Penta 4.3OSi-E / 4.3OSi-EF
- Volvo Penta 5.0GXi-E / 5.0GXi-EF
- Volvo Penta 5.0OSi-E / 5.0OSi-EF
- Volvo Penta 5.7Gi-E / 5.7Gi-EF
- Volvo Penta 5.7GXi-F / 5.7GXi-FF
- Volvo Penta 5.7OSi-D / 5.7OSi-DF
- Volvo Penta 5.7OSXi-D / 5.7OSXi-DF
Volvo Penta used different belt lengths and routing arrangements across closely related 4.3L, 5.0L, and 5.7L gasoline engines. Earlier variants in these families can use different serpentine belt part numbers. Always confirm against the belt-routing diagram for your exact engine model, suffix, and serial number.
Serial Number Fitment Notice
The engine model suffix — including the letter designation — determines the correct serpentine belt. For example, 5.0GXi-E/EF diagrams specifically identify 3586326, while earlier 5.0GXi variants use a different belt. Locate the engine identification plate and confirm the full model and serial number before ordering. Do not assume fitment based on displacement alone.
Specifications
- Belt type: Serpentine / Multi-rib accessory drive belt
- Profile: Multi-rib (not a single-groove V-belt)
- System: Accessory drive — alternator, tensioner, idler, circulation pump
- Diagram position: Item 19 in applicable serpentine belt assemblies
- Weight: 0.7 kg (1.5 lb)
- Construction: Reinforced rubber composite (OEM spec)
When to Replace
- Belt shows cracking, fraying, or missing rib material
- Belt surface is glazed or hardened
- Edge wear, tracking damage, or uneven rib wear visible
- Persistent belt squeal or slipping from the accessory drive
- Stretching that prevents the tensioner from maintaining proper belt tension
- Contamination with oil, coolant, or other fluids
- At each scheduled maintenance interval or any time the belt is removed for service
Service Interval
Replace the serpentine belt at the Volvo Penta recommended maintenance interval for your engine model, or immediately if inspection reveals any cracking, rib damage, glazing, or contamination. Inspect the belt tensioner, idler pulley, and all drive pulleys at every belt replacement — worn or seized components are a common cause of accelerated belt wear and premature failure.
Installation Notes
Before installing the new belt, inspect the belt tensioner 3860079, idler pulley 3860201, alternator pulley, and circulation-pump pulley for wear, wobble, or roughness. Confirm belt routing against the correct engine diagram before releasing the tensioner. After installation, verify that every rib is fully and evenly seated in the pulley grooves and that the tensioner moves smoothly through its normal operating range. Incorrect belt routing is one of the most common causes of premature serpentine belt failure on these engines.
Important: 3884950 is the alternator part number in this same accessory drive assembly — it is not a belt part number or a cross-reference for 3586326. Do not substitute based on any listing that presents 3884950 as a belt replacement.
Related Part Numbers
- Active OEM number: 3586326
- Aftermarket cross-reference: RM3586326
- Related belt tensioner: 3860079
- Related idler pulley: 3860201
- Related alternator (not a belt): 3884950
Technical FAQ
Q: Is this a V-belt or a serpentine belt?
A: This is a multi-rib serpentine belt, not a single-groove V-belt. Confirm your engine uses a serpentine accessory drive system before ordering. These belt types are not interchangeable.
Q: Is 3884950 a cross-reference or alternate part number for this belt?
A: No. 3884950 is the alternator part number in the same accessory drive assembly. Some third-party listings incorrectly associate it with the belt. It is not a belt cross-reference or supersession number for 3586326.
Q: Does 3586326 fit all 4.3L, 5.0L, and 5.7L Volvo Penta engines?
A: No. Confirmed applications are specific to the E and F suffix variants listed above. Earlier production variants in the same displacement families use different serpentine belt part numbers. Always confirm the full engine model suffix and serial number before ordering.
Q: Should I replace the tensioner and idler pulley at the same time?
A: Inspect both whenever the serpentine belt is replaced. A worn tensioner or a rough, seized idler pulley significantly shortens belt life and is a common underlying cause of early belt failure on these engines. Replacing all three together during a scheduled service is the most efficient approach.
Q: Can I reuse the serpentine belt after removing it for another repair?
A: No. Once a serpentine belt has been removed, it should be replaced. Reinstalling a used belt risks unexpected failure, and the cost of the belt is low compared with reopening the accessory drive assembly.
Related Parts
- Volvo Penta Belt Tensioner 3860079 — Inspect and replace with belt service
- Volvo Penta Idler Pulley 3860201 — Inspect and replace with belt service
- Volvo Penta Serpentine Drive Belt 21132390 — Alternative serpentine belt for other 4.3L–8.1L gasoline engine variants
Parts Desk Insights
The most common ordering error with this belt is selecting by displacement alone. The 4.3L, 5.0L, and 5.7L gasoline engine families each use multiple serpentine belt part numbers depending on engine generation and suffix — engine size alone does not determine the correct belt. Always confirm the full engine model suffix and serial number before processing an order for this part.
When customers order this belt, it is worth also asking about the tensioner and idler pulley condition. On E and F-suffix gasoline engines, worn tensioners and seized idler pulleys are a frequent underlying cause of belt failure. Replacing the belt without inspecting these components often leads to early re-failure and a follow-up order. Recommending the tensioner and idler as a service set significantly reduces repeat service complaints on these engines.
Shipping information
In-stock and OEM parts: ship same or next business day.
Supplier-stock items are usually ready for pickup or shipping within 24 hours of ordering.
Special-order timing may vary.
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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