Stainless Steel Exhaust Elbow – Fits Yanmar 3JH/4JH Series (Replaces 129670-13561/MAR13561INOX)
Stainless Steel Exhaust Elbow – Fits Yanmar 3JH/4JH Series (Replaces 129670-13561/MAR13561INOX) 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.).
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).
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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 3JH/4JH Series (Replace...
Product Details
This Stainless Steel Exhaust Elbow is engineered for direct fitment on Yanmar Marine 3JH and 4JH series diesel engines. Built from high-grade stainless steel, it serves as a robust, long-lasting replacement for the original component, ensuring reliable performance in harsh marine environments.
It directly replaces OEM and aftermarket part numbers, including Yanmar 129670-13561, Yanmar 129470-13561, and MAR13561INOX, offering a precise interchange for a seamless installation.
- Designed for direct, bolt-on installation.
- Constructed from corrosion-resistant material for extended service life.
- Includes one exhaust elbow for a complete replacement.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 129670-13561 |
| Yanmar | 129470-13561 |
| Aftermarket | MAR13561INOX |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This component is designed to fit the following Yanmar Marine diesel engines:
| Brand | Model | Stroke | OEM Part No. |
|---|---|---|---|
| Yanmar | 3JH2E | 4-Stroke | 129670-13561 |
| Yanmar | 3JH3E | 4-Stroke | 129670-13561 |
| Yanmar | 3JH4E | 4-Stroke | 129670-13561 |
| Yanmar | 3JH5E | 4-Stroke | 129670-13561 |
| Yanmar | 4JH3E | 4-Stroke | 129670-13561 |
| Yanmar | 4JH4E | 4-Stroke | 129670-13561 |
| Yanmar | 4JH5E | 4-Stroke | 129670-13561 |
Technical Specs
- Product Type
- Marine Exhaust Elbow
- Installation
- Direct replacement
- Fuel Type
- Diesel
- Connection
- Bolt-on with gasket
- Housing Material
- Stainless Steel (INOX)
- Housing Color
- Silver/Metallic
- Dimensions
- Length: 22.0 cm, Height: 12.0 cm, Width: 12.0 cm
- Weight
- 1.47 kg (3.24 lb)
- Fitting Type
- Bolt flange to manifold, hose connection to exhaust
- Other Technical Attributes
- Corrosion-resistant in marine environments
What’s in the Box
- 1 x Stainless Steel Exhaust Elbow (MAR13561INOX/129670-13561)
Installation Notes
- Ensure the engine is turned off and fully cooled before starting.
- Close the raw water intake seacock and disconnect the vessel's battery.
- Loosen the clamps and detach the wet exhaust hose from the old elbow.
- Carefully unbolt and remove the existing exhaust elbow from the engine's manifold.
- Thoroughly clean the manifold mating surface to remove all old gasket material and corrosion buildup.
- Position a new gasket (part number 129472-18090, not included) on the manifold flange.
- Mount the new stainless steel elbow, ensuring proper alignment with the bolt holes.
- Tighten the mounting bolts evenly to the manufacturer-specified torque settings.
- Reconnect the exhaust hose and secure it firmly with marine-grade clamps.
- Open the seacock, reconnect the battery, and start the engine.
- Carefully inspect the new elbow and all connections for any signs of water or exhaust leaks.
Troubleshooting & FAQ
What are the signs my exhaust elbow is failing?
Common signs of a failing exhaust elbow include visible water leaks or rust streaks on the component, steam in the exhaust, engine overheating, reduced engine power, or carbon monoxide alarms. Regular inspection is key to catching issues early.
How is this stainless steel elbow different from the original cast iron part?
This elbow is made from corrosion-resistant stainless steel (INOX), which offers superior longevity and resistance to saltwater and exhaust gas corrosion compared to the standard cast iron OEM part. It is designed to prevent the common failure mode of clogging due to internal rust and scale buildup.
Do I need to replace the gasket when installing this elbow?
Yes, it is critical to use a new gasket to ensure a proper, leak-free seal. The compatible gasket for this application is typically part number 129472-18090, which should be purchased separately.
How often should a marine exhaust elbow be inspected or replaced?
We recommend a visual inspection at least once per season for any signs of corrosion, leaks, or blockages. While replacement intervals depend on usage (saltwater vs. freshwater) and engine hours, a preventative replacement every 5 to 7 years is a common best practice to avoid engine damage.
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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