Mercury Quicksilver Verado Serpentine Belt 8M0232583 — 135–400 HP FourStroke
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Mercury Quicksilver Verado Serpentine Belt — OEM Part 8M0232583
This genuine OEM serpentine belt drives the alternator and belt-driven accessories on selected Mercury Verado FourStroke outboards. Built to Mercury Marine factory specification, it maintains the correct rib profile, tension, and length for the Verado's belt tensioner assembly. A worn or failed belt means a dead alternator and potential charging system failure on the water — this is the part to keep in spec.
Part Information
- OEM Part Number: 8M0232583
- Mercury Reference: 57-8M0232583
- Brand: Mercury / Quicksilver
- Official Product Type: Serpentine / alternator drive belt
- Supersedes: 880566Q14
- System: Alternator and belt-tensioner assembly
- GTIN / UPC: 678633215421
Compatible Applications
- Mercury Verado 135–200 HP 4-cylinder FourStroke — serial 1B311420 and up
- Mercury Verado 200–300 HP 6-cylinder FourStroke (pre-Gen V) — serial 1B390143 through 2B144127
- Mercury Verado 200–300 HP 6-cylinder FourStroke (Gen V) — serial 2B144123 and up
- Mercury Verado 350–400 HP 6-cylinder FourStroke — serial 2B141617 and up
- Confirm fitment via engine horsepower, cylinder configuration, and serial number before ordering
Related Parts
- Mercury Quicksilver Serpentine Belt 880566Q14 — superseded part number (earlier Verado L4 & L6 applications)
- Mercury Quicksilver Alternator 892940T02 — 70 Amp Verado FourStroke 135–400 HP
When to Replace
- Belt shows cracking, glazing, or fraying
- Missing or damaged ribs visible on belt surface
- Excessive wear or belt slipping under load
- Alternator output is inconsistent or charging warning is active
- As part of scheduled Verado service or annual maintenance
Installation Notes
- Record the existing belt routing before removal, or refer to the Mercury Verado service diagram for your engine configuration
- Inspect the tensioner, idler pulley surfaces, and alternator pulley alignment while the belt is removed
- Ensure all belt ribs are fully seated in each pulley groove before operating the engine
- Check belt tension per Mercury service specifications after installation
Service Interval
Inspect annually or per Mercury's recommended Verado service schedule. Replace immediately if cracking, glazing, fraying, or rib damage is observed. Proactive replacement is recommended during major service intervals to avoid unplanned failure on the water.
Technical FAQ
Is this the same belt as 880566Q14?
8M0232583 supersedes 880566Q14. The new part number is the current OEM replacement and covers the same Verado applications, but always confirm with your engine serial number.
Is this belt compatible with MerCruiser sterndrives?
No. This belt is specific to Mercury Verado FourStroke outboards. MerCruiser inboard and sterndrive engines use a different belt configuration. Confirm your engine type and serial number before ordering.
How do I confirm the correct belt for my Verado?
Match the engine horsepower, cylinder count (4-cylinder or 6-cylinder), and serial number to the ranges listed above. When in doubt, cross-reference with your Mercury parts diagram.
Parts Desk Insights
The most common mistake with this belt is ordering it for a MerCruiser sterndrive — this part is Verado outboard only. It’s also frequently requested when a customer reports a battery not charging or an alternator warning on a Verado, since belt slip or failure is the first thing to rule out before condemning the alternator. When replacing this belt, it’s worth inspecting the Verado alternator and tensioner at the same time. Always match the serial number ranges above to confirm the correct application.
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
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
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.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.