Stainless Steel Exhaust Mixing Elbow – Fits Yanmar 2GM/3GM Series (Replaces 104211-13520)
Stainless Steel Exhaust Mixing Elbow – Fits Yanmar 2GM/3GM Series (Replaces 104211-13520) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Stainless Steel Exhaust Mixing Elbow – Fits Yanmar 2GM/3GM Series (...
Product Details
This high-quality Stainless Steel Exhaust Mixing Elbow is an aftermarket replacement designed for Yanmar 2GM and 3GM series diesel engines, typically ranging from 15-30 HP and manufactured between the 1980s and 2000s. It serves as a crucial component in the marine exhaust system, mixing cooling water with hot exhaust gases to safely lower the temperature before discharge.
This part is a direct replacement for Yanmar part number 104211-13520 and equivalents from other aftermarket manufacturers like HDIM Marine.
- Direct bolt-on installation for straightforward replacement.
- Constructed from durable stainless steel for superior corrosion resistance compared to the OEM cast iron version.
- Features a water-cooled design to efficiently reduce exhaust gas temperatures.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yanmar | 104211-13520 | OEM Reference |
| HDIM Marine | Stainless Steel Replacement | Aftermarket equivalent available from Exhaustelbows.com |
Engine & Model Compatibility
Confirm your engine model and year in the table below.
This part is designed specifically for the following Yanmar Marine engines.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yanmar | 2GM20 | 20 | 4-Stroke | 1980s–2000s | 104211-13520 | Recommended replacement every 500 hours or 2 years |
| Yanmar | 2GM20F | 20 | 4-Stroke | 1980s–2000s | 104211-13520 | F denotes sail drive version |
| Yanmar | 3GM30 | 30 | 4-Stroke | 1980s–2000s | 104211-13520 | Recommended replacement every 500 hours or 2 years |
| Yanmar | 3GM30F | 30 | 4-Stroke | 1980s–2000s | 104211-13520 | F denotes sail drive version |
Technical Specs
- Product Type
- Exhaust Mixing Elbow
- Material
- Stainless Steel (Aftermarket)
- OEM Material
- Cast Iron
- Finish
- Metallic/Silver
- Installation
- Direct bolt-on replacement
- Fitment
- Flange mount with bolt holes
- Connections
- Flange mount to exhaust manifold, hose connection for water inlet and exhaust outlet
- Design
- Water-cooled with double-threaded sleeve connector
- Dimensions
- 13.7 x 8.95 x 16.2 (L x W x H)
- Max Temperature
- Withstands exhaust temperatures up to 450°C (842°F)
What’s in the Box
- 1 x Stainless Steel Exhaust Mixing Elbow (Aftermarket replacement for Yanmar 104211-13520)
- 1 x Exhaust Bend Connector
- 1 x Gasket
Installation Notes
- Ensure the engine is completely cool and close the raw water intake seacock.
- Disconnect the vessel's negative battery terminal for safety.
- Carefully detach the wet exhaust hose, water injection hose, and any sensors from the old elbow.
- Unbolt and remove the old mixing elbow from the exhaust manifold. Note the orientation of the connector piece if present.
- Thoroughly clean the mating surface on the exhaust manifold, removing all old gasket material and carbon buildup.
- Place the new gasket onto the manifold, followed by the new stainless steel elbow.
- Hand-tighten the bolts to ensure proper alignment, then torque them to the manufacturer's specified values.
- Reconnect the water injection and wet exhaust hoses, ensuring all clamps are secure.
- Open the raw water seacock and reconnect the negative battery terminal.
- Start the engine and immediately check for any exhaust or water leaks around the new installation.
Troubleshooting & FAQ
How do I know if this elbow fits my engine?
This elbow is a direct replacement for Yanmar part 104211-13520. It is designed for specific Yanmar GM series models, including the 2GM20, 2GM20F, 3GM30, and 3GM30F. Please consult the compatibility table and verify against your engine's manual or existing part before ordering.
Why choose a stainless steel elbow over the cast iron original?
The original OEM elbows are made of cast iron, which is prone to severe corrosion and carbon buildup over time. Our aftermarket elbow is made from high-grade stainless steel, offering superior durability and a significantly longer service life by resisting rust and material degradation.
How often should this part be replaced?
As a critical preventative maintenance item, Yanmar's service manual recommends inspecting the mixing elbow annually and replacing it every 500 hours of operation or every two years, whichever comes first. This helps prevent sudden failure that could damage the engine.
What are the signs of a failing mixing elbow?
Common symptoms of a blocked or failing elbow include engine overheating, reduced RPMs or loss of power, excessive black smoke, or signs of water/steam leaking into the engine compartment. Visual inspection may reveal external corrosion, cracks, or water drips.
Is a gasket included?
Yes, a new gasket is included to ensure a proper, leak-free seal between the new elbow and the exhaust manifold.
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.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
