Skip to product information
SKU:
ZZ3E02788
Same day shipping if ordered by 4PM CST.
Volvo Penta 3860079 Engine Alternator Belt Tensioner Serpentine Sterndrive
$114.99
In Stock
$114.99
Sale price
$114.99
Regular price
Estimated delivery between
Let us Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I needed a replacement starter for my mower and wasn’t completely sure which one would fit. I sent them a message and they got back to me quickly, asked for my model information, and helped confirm the right part before I ordered. Everything was handled professionally and the communication was great. Very happy with the service.
Kevin C. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
Engine Alternator Belt Tensioner for Volvo Penta
This Engine Alternator Belt Tensioner for Volvo Penta is a replacement component that keeps the serpentine belt correctly tensioned, and it cross-references OEM number 3860079.
Overview
Belt flutter, squealing, a rough pulley bearing, or a tensioner that no longer holds steady spring pressure can lead to belt slip and accessory-drive problems. Replacing the worn tensioner restores consistent belt pressure so the alternator, water pump, and other belt-driven accessories can run normally.
Built For Performance
- Heavy-duty spring mechanism for consistent tension
- Sealed bearing for smooth rotation
- Precision-machined pulley for even belt tracking
- Corrosion-resistant housing for marine environments
- Direct fit for Volvo Penta sterndrive engines
On-The-Job Use
- Used in the engine compartment of Volvo Penta sterndrive boats
- Maintains alternator output by preventing belt slip
- Replaces worn tensioner during routine engine service
- Ensures reliable charging while cruising
Specs At A Glance
| Part Number(s) | 3860079 |
Good To Know
Q: What are signs of a failing belt tensioner? A: Squealing noise from the belt, visible wear on the pulley, or intermittent charging issues indicate the tensioner may need replacement.
Q: Is this tensioner compatible with all Volvo Penta sterndrives? A: This part is designed for Volvo Penta engines that use serpentine belts, but always verify your engine model and part number before purchase.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.