Mercury 8M0082322 – 90° Air Fitting | MerCruiser Seawater Pump & Drain Assembly
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Mercury 8M0082322 – 90° Air Fitting | MerCruiser Seawater Pump & Drain Assembly
Part Number: 8M0082322
Mercury Reference: 22-8M0082322
Brand: Mercury Marine
Official Product Type: 90-Degree Air Fitting (Elbow)
System: Seawater Pump / Water Drain Assembly
Fitting Style: 90-degree elbow
Color: Orange (Mercury system identification)
Supersedes: 22-865289
About This Part
Mercury 8M0082322 is a genuine OEM 90-degree orange elbow air fitting used in MerCruiser seawater pump and water drain system assemblies. The 90-degree design allows air or ventilation hoses to be routed efficiently in tight engine compartments without kinking or restricting flow. The orange color is used by Mercury for system identification within the cooling and drain assembly. This fitting supersedes the earlier part number 22-865289 and is the current OEM replacement for applicable engines.
Compatible Applications
Used in MerCruiser seawater pump and water drain assemblies. Always verify fitment using your engine model and serial number before ordering.
- MerCruiser 4.5L MPI 200 Alpha / Bravo
- MerCruiser 4.5L MPI 250 Alpha / Bravo
- MerCruiser 496 MAG
- MerCruiser 496 MAG HO
- MerCruiser 8.1L Inboard (Inline)
- MerCruiser 8.1L Inboard (V-Drive)
- Mercury Racing 520 Sterndrive
- Mercury Racing 540 Sterndrive
Serial Number & Fitment Notice
Small fittings can vary by engine model, cooling system configuration, and serial number range. Always confirm 8M0082322 against your engine model and serial number using the Mercury parts catalog before ordering. Do not select by engine displacement or horsepower alone.
Supersession & Part Number Reference
- Current Part Number: 8M0082322
- Mercury Reference: 22-8M0082322
- Supersedes: 22-865289
When to Replace
Replace this fitting when it shows cracking, brittleness, deformation, or when the hose connection at this point is loose, leaking, or cannot be properly secured. It should also be inspected and replaced any time the seawater pump or drain assembly is being serviced and the fitting shows signs of age or heat damage.
Installation Notes
Ensure the replacement fitting is fully seated and oriented correctly at 90 degrees before securing the hose connection. 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. Follow Mercury service procedures for the correct installation sequence within the seawater pump or drain assembly.
Related Products
- Mercury 8M0082320 – Male Air Fitting | MerCruiser Engine Ventilation
- Mercury 8M0082321 – Air Fitting | MerCruiser Engine Ventilation Assembly
Parts Desk Insights
Best Use Case: This fitting is most commonly needed during seawater pump service, water drain system rebuilds, or when tracing a cooling system air leak on a MerCruiser big-block, 4.5L MPI, or Mercury Racing sterndrive. The 90-degree elbow design makes it specific to applications where a straight fitting won’t clear surrounding components — it’s not interchangeable with the straight fittings in the same assembly. Worth having on hand before starting a seawater pump job on any of the listed engines so the service isn’t delayed by a missing elbow.
Common Mistakes: The most frequent error is confusing this 90-degree elbow with the straight fittings (such as 8M0082320 or 8M0082321) used in the same assembly family. They are not interchangeable — the diagram position determines which fitting is required. Always confirm the correct fitting style and part number against the Mercury parts diagram for the specific engine serial number before ordering. Also note that the orange color is a Mercury system identifier, not a universal standard — do not substitute a generic elbow fitting of the same thread size.
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.