Mercury 8M0082320 – Male Air Fitting | MerCruiser Engine Ventilation
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Mercury 8M0082320 – Male Air Fitting | MerCruiser Engine Ventilation
Part Number: 8M0082320
Mercury Reference: 22-8M0082320
Brand: Mercury Marine
Official Product Type: Male Air Fitting
System: Engine Ventilation / Air Line
Supersedes: 863719
About This Part
Mercury 8M0082320 is a genuine OEM male air fitting used in MerCruiser engine ventilation and air line assemblies. It provides a secure, leak-free connection point for air or ventilation hoses routed within the engine compartment. This fitting supersedes the earlier part number 863719 and is the current OEM replacement for applicable MerCruiser engines. Proper fitting condition is important for maintaining correct airflow through engine ventilation systems and preventing loose or disconnected hose routing.
Compatible Applications
Commonly used in MerCruiser engine ventilation and air routing assemblies. Always verify fitment using your engine model and serial number before ordering — fitting specifications can vary by engine configuration and production range.
- MerCruiser 5.7L V8
- MerCruiser 6.2L V8
- MerCruiser 496 MAG
- MerCruiser 496 MAG HO
- MerCruiser 8.1L Inboard
- MerCruiser 8.2L MAG
Serial Number & Fitment Notice
Small fittings can vary by engine model, configuration, and serial number range. Confirm 8M0082320 against your engine model and serial number using the Mercury parts catalog before ordering. Do not select by engine displacement alone.
Supersession & Part Number Reference
- Current Part Number: 8M0082320
- Mercury Reference: 22-8M0082320
- Supersedes: 863719
When to Replace
Replace this fitting when it shows cracking, brittleness, deformation, or when a hose connection at this point is loose, leaking air, or cannot be secured. It should also be replaced any time the ventilation hose assembly is being serviced and the fitting shows signs of age or heat damage.
Installation Notes
Ensure the replacement fitting is fully seated and the hose clamp or retaining clip is properly secured before returning the engine to service. Inspect the connected hose for cracking or deterioration at the same time — a new fitting on a degraded hose will not provide a reliable connection.
Parts Desk Insights
Best Use Case: This fitting is most commonly needed during engine ventilation hose service, engine compartment rebuilds, or when tracing an air leak in the ventilation system on a MerCruiser big-block or small-block V8. It’s a low-cost part that is easy to overlook during a larger job — worth having on hand when servicing the surrounding hose assembly so the job doesn’t stall waiting for a small fitting.
Common Mistakes: The most frequent issue is ordering by engine displacement or horsepower without confirming the part number against the Mercury parts diagram for the specific engine serial number. MerCruiser engines of the same displacement can use different fittings depending on production year and configuration. Also, because this is a small and inexpensive part, it is sometimes overlooked during hose replacement — if the hose is being replaced due to age or damage, the fitting should be inspected and replaced at the same time if there is any doubt about its condition.
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.