Stainless Steel Exhaust Elbow – Fits Yanmar 4LH-STE Marine Diesel Engines (Replaces 119181-13500)
Stainless Steel Exhaust Elbow – Fits Yanmar 4LH-STE Marine Diesel Engines (Replaces 119181-13500) is backordered and will ship as soon as it is back in stock.
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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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Stainless Steel Exhaust Elbow – Fits Yanmar 4LH-STE Marine Diesel E...
Product Details
This Stainless Steel Exhaust Elbow – Fits Yanmar 4LH-STE Marine Diesel Engines is an aftermarket replacement designed for reliable performance in harsh marine environments. It is specifically engineered for compatibility with select Yanmar 4LH-STE series diesel engines, which are commonly found in recreational vessels and small commercial craft.
This part serves as a direct interchange for Yanmar part number 119181-13500 and HDI Marine 3B4, ensuring proper fit and function.
- Constructed from high-grade INOX stainless steel for superior corrosion resistance.
- Features a direct bolt-on design for straightforward installation using the existing flange.
- Manufactured using investment casting and CNC machining for precise dimensions.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 119181-13500 |
| HDI Marine | 3B4 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yanmar Marine Engines: This part is confirmed to fit the specific models listed. Always verify your engine's part number before ordering.
| Brand | Model | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Yanmar | 4LH-STE | 4-Stroke | 119181-13500 | Common in recreational vessels |
Technical Specs
- Product Type
- Exhaust Mixing Elbow
- Installation
- Direct OEM replacement
- Fuel Type
- Diesel
- Connection
- Bolt-on with gasket
- Housing Material
- INOX (Stainless Steel)
- Housing Color
- Silver/Metallic
- Dimensions
- Inlet: 1-1/4" (31.75 mm), Outlet: 4" (101.60 mm)
- Product Dimensions
- 13.5 x 19.0 x 32.5 cm
- Fitting Type
- Flanged connection to engine, hose connection at outlet
- Warranty
- 3 years
- Other Technical Attributes
- Investment cast (lost wax technique) with CNC machining; Galvanized coating for additional protection
What’s in the Box
- 1 x Stainless Steel Exhaust Elbow (119181-13500)
Note: Mounting gasket is not included. The compatible gasket part number is 119171-13510.
Installation Notes
- Ensure the engine is completely cool and the battery is disconnected before starting.
- Carefully disconnect the raw water hose and exhaust hose from the old elbow.
- Unbolt and remove the old exhaust elbow from the engine's heat exchanger or turbo.
- Thoroughly clean the mating flange surface to remove any old gasket material or corrosion.
- Place the new gasket (sold separately) onto the flange, ensuring correct alignment.
- Install the new stainless steel exhaust elbow, and hand-tighten the mounting bolts.
- Tighten bolts to the manufacturer's specified torque in a star or crisscross pattern.
- Reconnect the exhaust and water hoses, securing them with appropriate clamps.
- Once installed, run the engine and carefully check for any exhaust or water leaks around the new elbow.
Troubleshooting & FAQ
Will this fit my Yanmar engine?
This exhaust elbow is designed for the Yanmar 4LH-STE marine diesel engine. We strongly recommend verifying that your original part number is 119181-13500 before purchasing to ensure compatibility.
What are the signs of a failing exhaust elbow?
Common signs of failure include water leaks, visible rust or corrosion, overheating, loss of engine power, or excessive steam/smoke from the exhaust. A visual inspection for cracks or blockages is recommended as part of regular maintenance.
How often should I replace my exhaust elbow?
Replacement intervals vary based on usage (saltwater vs. freshwater) and operating hours. It's best practice to inspect the elbow annually for signs of corrosion or blockage. In saltwater environments, replacement is often needed every 3-7 years.
What is the difference between this and the OEM part?
This aftermarket elbow is made of investment-cast stainless steel, offering enhanced corrosion resistance compared to the original cast iron part. It is designed to meet or exceed OEM specifications for fit and function, providing a longer service life in marine conditions.
Does this elbow come with a gasket?
No, a mounting gasket is not included in the box. The compatible gasket is part number 119171-13510 and must be purchased separately to ensure a proper seal during installation.
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
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