Exhaust Manifold 90° Elbow Drain Plug – Fits Mercury MerCruiser V6 & V8 Engines (Replaces 862210A01, 806926A1)
Exhaust Manifold 90° Elbow Drain Plug – Fits Mercury MerCruiser V6 & V8 Engines (Replaces 862210A01, 806926A1) is backordered and will ship as soon as it is back in stock.
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Exhaust Manifold 90° Elbow Drain Plug – Fits Mercury MerCruiser V6 ...
Exhaust Manifold 90° Elbow Drain Plug – Fits Mercury MerCruiser V6 & V8 Engines (Replaces 862210A01, 806926A1) is backordered and will ship as soon as it is back in stock.
Product Details
This Exhaust Manifold 90° Elbow Drain Plug is a direct replacement for Mercury MerCruiser V6 and V8 sterndrive and inboard engines equipped with center rise manifolds. It is designed for a wide range of models, including 4.3L, 5.0L, 5.7L, 6.2L, 7.4L, and 8.2L engines.
This part replaces and provides an interchange for OEM part numbers Mercury 862210A01, MerCruiser 22-806926A1, Sierra 18-4224, GLM 13990/13991, and Mallory 9-41200.
- Installs as a 90° elbow thread-in fitting.
- Constructed from marine-grade nylon plastic for superior durability and corrosion resistance.
- Features a standard 3/4" NPT thread for a secure connection.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 862210A01 |
| Mercury | 22-862210A01 |
| MerCruiser | 22-806926A1 |
| MerCruiser | 806926A1 |
| Sierra | 18-4224 |
| GLM | 13990 |
| GLM | 13991 |
| Mallory | 9-41200 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This plug is compatible with a wide range of MerCruiser engines. Always check your specific part number before ordering.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | 4.3L | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 5.0L | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 5.7L | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 5.8L | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 6.2L | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 6.3L | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 6.8L | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 7.4L | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 8.2L | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 262 MAG | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 350 | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 377 | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 454 | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 502 | Various | 4-Stroke | 862210A01 | ||
| MerCruiser | 525 | Various | 4-Stroke | 862210A01 |
Technical Specs
- Product Type
- Exhaust Manifold Drain Plug
- Installation
- 90° Elbow Thread-in Fitting
- Connection
- 3/4" NPT Thread
- Housing Material
- Nylon PA66 Plastic
- Housing Color
- Black
- Fitting Type
- 90° Elbow
- Thread Size
- 3/4" NPT
- Other Technical Attributes
- Marine grade nylon plastic for durability and corrosion resistance
What’s in the Box
- 1 x Exhaust Manifold 90° Elbow Drain Plug (Replaces 862210A01/806926A1)
Installation Notes
- Ensure the engine is completely cool and disconnect the boat's battery.
- Locate the existing drain plug on the exhaust manifold and place a suitable container underneath to catch draining water.
- Carefully unscrew the old plug to allow the manifold to drain completely.
- Clean the threaded port on the manifold to remove any old sealant or debris.
- Apply a marine-grade thread sealant to the threads of the new drain plug.
- Hand-thread the new 90° elbow plug into the manifold, ensuring it is properly aligned.
- Tighten the plug securely with an appropriate wrench, but be careful not to overtighten and damage the plastic housing.
- After installation, reconnect the battery, start the engine, and carefully check for any leaks around the new plug.
Troubleshooting & FAQ
How do I know if this drain plug fits my MerCruiser engine?
This plug fits most MerCruiser V6 and V8 engines with center rise exhaust manifolds (4.3L to 8.2L models). Verify your part number against the references in the Part Number Matrix and check the compatible models list. When in doubt, compare the plug visually to your old part.
Is this plug plastic or metal?
This drain plug is made from heavy-duty, marine-grade Nylon PA66 plastic. This material is chosen for its excellent durability and resistance to corrosion and degradation in harsh saltwater and freshwater environments.
What are the signs of a failing exhaust manifold drain plug?
Common signs of failure include visible water leaks or persistent drips from the plug area, especially when the engine is running or cooling down. Other indicators are cracks in the plug's body or difficulty removing/tightening it due to stripped threads.
How often should these drain plugs be inspected or replaced?
It is best practice to inspect the drain plugs during routine seasonal maintenance or winterization procedures. We recommend replacing them every few seasons or immediately if you notice any signs of wear, cracking, or leakage to prevent water damage to the engine.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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