Stainless Steel Exhaust Mixing Elbow - Fits Yanmar Marine Diesel Engines
Stainless Steel Exhaust Mixing Elbow - Fits Yanmar Marine Diesel Engines is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Stainless Steel Exhaust Mixing Elbow - Fits Yanmar Marine Diesel Engines is backordered and will ship as soon as it is back in stock.
Product Details
This high-quality Stainless Steel Exhaust Mixing Elbow is designed as a direct replacement for exhaust systems on Yanmar marine diesel engines, including the 2GM, 3GM, and similar series from the 1980s through the 2000s, covering models from 9 to 30 HP.
It serves as a direct interchange for Yanmar OEM part numbers 124223-13500, 124223-13501, and 124223-13502.
- Direct bolt-on installation for straightforward replacement.
- Constructed from corrosion-resistant 304 or 316 grade stainless steel for extended service life.
- Includes a new mounting gasket for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 124223-13500 |
| Yanmar | 124223-13501 |
| Yanmar | 124223-13502 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This elbow is confirmed to fit many popular Yanmar GM and JH series engines, providing a reliable, long-lasting replacement for the original cast iron part.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yanmar | 2GM20F | 20 | 4-Stroke | 1980s–2000s | 124223-13500 | Also fits related 2GM models |
| Yanmar | 3GM30F | 30 | 4-Stroke | 1980s–2000s | 124223-13500 | Also fits related 3GM models |
| Yanmar | 3JH2E | 4-Stroke | 124223-13500 | Confirmation needed | ||
| Yanmar | 2QM20 | 20 | 4-Stroke | 124223-13500 | Confirmation needed |
Technical Specs
- Product Type
- Exhaust Mixing Elbow
- Installation
- Direct bolt-on replacement
- Fuel Type
- Diesel
- Connection
- Bolt flange to manifold, hose connection for exhaust
- Housing Material
- Stainless Steel (304 or 316 grade)
- Housing Color
- Silver/Metallic
- Dimensions
- Height: 7.5 in; Width: 9.0 in; Length: 19.0 in
- Fitting Type
- Bolt flange with threaded sleeve connector
- Operating Temperature
- Rated for marine diesel exhaust temperatures (400-500°C)
- Other Technical Attributes
- Water injection port for exhaust cooling
What’s in the Box
- 1 x Stainless Steel Exhaust Mixing Elbow (124223-13500)
- 1 x Mounting Gasket
Installation Notes
- Ensure the engine is completely cool before beginning work.
- Close the raw water seacock to prevent water from entering the vessel.
- Disconnect the exhaust hose and the smaller water injection hose from the old elbow.
- Carefully remove the nuts or bolts securing the elbow to the exhaust manifold.
- Clean the mating surface on the manifold, ensuring all old gasket material is removed for a clean seal.
- Place the new gasket onto the manifold studs.
- Install the new stainless steel mixing elbow, ensuring a flush and secure fit.
- Tighten the mounting nuts or bolts evenly to the manufacturer-specified torque.
- Reconnect the water injection and main exhaust hoses, securing the clamps firmly.
- Open the raw water seacock.
- Start the engine and immediately check for any exhaust or water leaks around the new elbow and its connections.
Troubleshooting & FAQ
How do I know if this elbow fits my specific Yanmar engine?
This elbow is a direct fit for Yanmar 2GM and 3GM series engines from the 1980s to 2000s. It also fits some 2QM and 3JH models. Always compare your old part to our photos and check the OEM part number (124223-13500, 124223-13501, or 124223-13502) to guarantee compatibility.
What are the signs of a failing mixing elbow?
Common signs include steam or water in the engine bay, overheating, loss of engine power, excessive black smoke from the exhaust, and visible corrosion or leaks on the elbow itself. A clogged mixing elbow restricts exhaust flow and can cause serious engine damage.
Why choose a stainless steel part over the original cast iron?
Stainless steel offers significantly better corrosion resistance compared to the original cast iron elbows, especially in a saltwater environment. This leads to a longer service life and reduces the risk of premature failure from rust-through.
How often should a mixing elbow be inspected or replaced?
It is good practice to inspect the mixing elbow annually for signs of corrosion, carbon buildup, or blockage. While service life varies, many boat owners replace them every 3-5 years as preventative maintenance to avoid unexpected failure.
Is this a genuine OEM part?
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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