Stainless Steel Exhaust Mixing Elbow – Fits Yanmar 4LH Series Marine Engines (Replaces 119171-13490)
Stainless Steel Exhaust Mixing Elbow – Fits Yanmar 4LH Series Marine Engines (Replaces 119171-13490) 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 4LH Series Marin...
Product Details
This high-quality Stainless Steel Exhaust Mixing Elbow is engineered for Yanmar 4LH Series marine diesel engines, including the 4LH-TE, 4LH-HTE, 4LH-HTZ, and 4LH-HTZAY models. It serves as a crucial component for mixing exhaust gases with cooling water before discharge.
This part is a direct replacement for Yanmar 119171-13490 and HDI Marine 3B3.5.
- Engineered for a direct bolt-on installation.
- Constructed from precision CNC machined, investment-cast 316 stainless steel for superior durability.
- Includes the required gasket for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 119171-13490 |
| HDI Marine | 3B3.5 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yanmar | 4LH-TE | 125 | 4-Stroke | 119171-13490 | ||
| Yanmar | 4LH-HTE | 150 | 4-Stroke | 119171-13490 | ||
| Yanmar | 4LH-HTZ | 158 | 4-Stroke | 119171-13490 | ||
| Yanmar | 4LH-HTZAY | 177 | 4-Stroke | 119171-13490 |
Technical Specs
- Product Type
- Exhaust Mixing Elbow
- Installation
- Direct bolt-on replacement
- Fuel Type
- Diesel
- Connection
- 3-1/2" (89mm) discharge diameter
- Housing Material
- 316 Stainless Steel
- Housing Color
- Silver/Metallic
- Dimensions
- 23.0" × 16.0" × 12.0"
- Weight
- 3kg (6.5 lbs)
- Fitting Type
- Bolt-on with gasket
- Thread Size
- 1-1/4" (32mm) water inlet
- Other Technical Attributes
- Precision CNC machined investment cast stainless steel
What’s in the Box
- 1 × Stainless Steel Exhaust Mixing Elbow (119171-13490)
- 1 × Gasket (119171-13510)
Installation Notes
- Ensure the engine is completely cool and disconnect the battery for safety.
- Close the raw water seacock and drain the cooling system as required.
- Carefully disconnect the raw water inlet hose and the main wet exhaust hose from the old elbow.
- Unbolt and remove the old elbow. Take care not to damage the exhaust manifold's mounting surface.
- Thoroughly clean the manifold surface to remove all old gasket material and carbon deposits.
- Position the new gasket and install the new stainless steel exhaust elbow, ensuring a proper fit.
- Tighten the mounting bolts to the manufacturer's recommended torque specifications in a cross pattern.
- Reconnect the raw water and exhaust hoses and secure all clamps firmly.
- Open the seacock, reconnect the battery, start the engine, and carefully inspect for any water or exhaust leaks.
Troubleshooting & FAQ
How do I know if this elbow fits my Yanmar engine?
This elbow is a direct replacement for Yanmar part number 119171-13490, specifically designed for the 4LH series engines including the 4LH-TE, 4LH-HTE, 4LH-HTZ, and 4LH-HTZAY models. Always check your engine's manual or existing part number to confirm fitment before ordering.
What is the main difference between this stainless steel elbow and the OEM cast iron version?
The primary advantage is material. This elbow is made from 316 stainless steel, offering significantly better corrosion resistance and a longer service life compared to the original cast iron part, which is prone to internal rust and scaling that can restrict exhaust and water flow.
How often should an exhaust elbow be inspected or replaced?
Exhaust elbows are critical wear items. We recommend inspecting them annually for signs of corrosion, carbon buildup, or water leaks. Replacement intervals vary based on usage (salt vs. fresh water, engine hours), but it's common to replace them every 5-7 years as preventative maintenance to avoid catastrophic failure.
What are common signs that my exhaust elbow is failing?
Common symptoms include engine overheating at high RPMs, reduced engine power, excessive steam or white smoke from the exhaust, external rust stains or water drips on the elbow's housing, and evidence of water leaking into the engine bay or back into the engine.
Is this an OEM part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. The part is manufactured in an ISO 9002 facility and batch-inspected for quality and consistency.
What are the shipping speed and cost?
We ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free to most locations; expedited options, where available, will be presented at checkout.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our full 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 quality control.
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.
