Volvo Penta Water Block-Off Kit 3862566 | SX X XXP XDP Sterndrive OEM
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Volvo Penta Water Block-Off Kit – 3862566
Part Information
- Part Number: 3862566
- Brand: Volvo Penta
- Official Product Type: Water Block-Off Kit
- OEM Status: Genuine Volvo Penta
- System: Sterndrive / Transom Shield – Water and Exhaust Block-Off Assembly
- Diagram Position: Water block-off position in the Water and Exhaust Block-Off assembly section
- Weight: Approx. 0.1 kg (0.22 lb)
What This Kit Does
The 3862566 is the genuine Volvo Penta OEM water block-off kit for selected SX, X, XXP, and XDP sterndrive and transom-shield assemblies. It blocks the water passage in the block-off system, and is a separate service item from the exhaust block-off kit. Both kits are shown together in the same Volvo Penta parts diagram but cover different passages and must be ordered individually.
If a full block-off service is being performed, confirm whether both the water and exhaust block-off kits are required before ordering.
Compatible Applications
- Volvo Penta SX-M
- Volvo Penta SX-MLT
- Volvo Penta SX-MDA
- Volvo Penta SX-MDB
- Volvo Penta SX-MHP
- Volvo Penta SX-MACLT / SX-MAC
- Volvo Penta SX-MDC / SX-MBAC
- Volvo Penta X-B / X-BLT
- Volvo Penta XHP-B / XHP-BLT
- Volvo Penta XXP-A / XXP-ALT
- Volvo Penta XXP-D3
- Selected Volvo Penta XDP-B / XDP-D3 configurations
Confirm fitment using your exact drive model and serial number against the applicable Volvo Penta water/exhaust block-off parts diagram before ordering. Surrounding hardware (clamps, caps, sealing kits) can vary by drive version and serial range.
Serial Number Fitment Notice
This kit appears across several SX, X, XXP, and XDP sterndrive families. Related block-off hardware and sealing components differ between earlier and later production runs. Confirm part number 3862566 against your drive model and serial number in the applicable diagram before ordering.
Diagram Position
Part 3862566 is listed in the Water and Exhaust Block-Off section of the applicable Volvo Penta sterndrive parts diagrams. It occupies the water block-off position. The exhaust block-off kit is a separate line item in the same diagram group.
When to Use This Kit
- Water block-off components are damaged, leaking, or corroded
- Transom-shield or sterndrive service requires removal of block-off hardware
- Replacing the full water/exhaust block-off arrangement as preventive maintenance
- Block-off assembly shows water seepage or deteriorated sealing components
Installation Notes
Confirm the correct Volvo Penta diagram for your drive model and serial number before beginning work. Inspect the adjoining cap 3852476, hose clamps 3852602 or 3863444 (depending on configuration), and related sealing kit 3587651 (applicable SX-M assemblies) while the area is accessible. The water and exhaust block-off parts are separate service items in the same diagram — order both if a full service is planned. Replace all disturbed sealing components and tighten fasteners per the Volvo Penta service specification.
Technical FAQ
Q: Does this kit include the exhaust block-off?
A: No. Part 3862566 is the water block-off kit only. If you also need the exhaust block-off for the same assembly, see the Volvo Penta Exhaust Block-Off 3888819 or confirm the correct exhaust block-off number from your drive’s parts diagram.
Q: How do I know if I need the water kit, the exhaust kit, or both?
A: Check the Volvo Penta Water and Exhaust Block-Off diagram for your drive model and serial number. Both items are listed in the same diagram group but are separate line items. Your Volvo Penta service procedure will specify which components require replacement.
Q: Can I reuse the old block-off hardware?
A: Only if it is undamaged, free of corrosion, and seals correctly. Given the labor required to access this area, replacing the kit during any related block-off service is generally the right call.
Related Parts
Alternate Part Numbers
- Volvo Penta 3862566
- VP 3862566
Parts Desk Insights
The most common ordering mistake with this kit is confusing the water block-off (3862566) with the exhaust block-off, or assuming one kit covers both passages. They are separate items listed together in the same diagram, and customers frequently order one expecting both. If a customer is doing a complete block-off service, both kits need to be on the order. The other issue to flag is that the surrounding hardware — clamps, caps, and sealing kits — can vary between drive versions and serial ranges, so pulling the full diagram for the specific drive before ordering prevents having to come back for additional parts mid-job.
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.
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