Mercury MerCruiser Quicksilver Exhaust Water-Shutter Assembly Pair 807166A3
In stock items ship same or next day.
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Product Description
Mercury MerCruiser Quicksilver 807166A3 is a pair of exhaust water-shutter assemblies for specified MerCruiser installations. The shutters allow exhaust to leave the engine and close against reverse water flow when the engine is not running.
Key Features
- Includes two water-shutter assemblies.
- Part number: 807166A3.
- Manufacturer-specified cross-pin diameter: 2.5 inches.
- Supersedes water-shutter reference 14348A1.
Engine Compatibility
Verified catalog applications include specified MerCruiser D3.0L / 150 and D3.6L / 180 diesel installations and D4.2L / 220 IDI systems. The part is also used in selected gasoline-engine exhaust arrangements. Confirm the engine serial number and exhaust-pipe shutter design.
Installation Notes
The manufacturer places this shutter downstream of the flexible connection between the exhaust elbow and Y-pipe. Inspect the shutter and pivot hardware for heat damage, wear or breakage. Follow the engine service manual for orientation and fit, and verify that the shutter moves freely.
Parts Desk Insight
The A3 suffix identifies this shutter pair. Match the complete part number and exhaust arrangement rather than choosing from appearance alone.
Manufacturer Parts Lookup
Use Mercury’s official parts finder to check the part against your engine or drive serial number.
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.