Stainless Steel Exhaust Elbow – Fits Yanmar 4JH Series (Replaces 129671-13552)
Stainless Steel Exhaust Elbow – Fits Yanmar 4JH Series (Replaces 129671-13552) is backordered and will ship as soon as it is back in stock.
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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 Elbow – Fits Yanmar 4JH Series (Replaces 12...
Product Details
This Stainless Steel Exhaust Elbow – Fits Yanmar 4JH Series (Replaces 129671-13552) is a high-quality aftermarket replacement for several Yanmar marine diesel engines. It is specifically designed for 4-stroke models in the 4JH series, including the 4JH4-HTE1, 4JH4-HTE, 4JH3-HTE, 4JH3-DTE, 4JF57, 4JH80, and 4JH110.
It serves as a direct replacement for Yanmar part number 129671-13552 and aftermarket reference MAR129671-13552INOX.
- Engineered for direct, bolt-on installation.
- Constructed from corrosion-resistant 316 stainless steel for extended service life.
- Precision-built using investment casting and CNC machining.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 129671-13552 |
| Aftermarket | MAR129671-13552INOX |
Engine & Model Compatibility
Confirm your engine model in the table below.
This exhaust elbow is designed for specific engines within the Yanmar 4JH series.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Yanmar | 4JH4-HTE1 | 110 | 4-Stroke | 129671-13552 |
| Yanmar | 4JH4-HTE | 110 | 4-Stroke | 129671-13552 |
| Yanmar | 4JH3-HTE | 100 | 4-Stroke | 129671-13552 |
| Yanmar | 4JH3-DTE | 80 | 4-Stroke | 129671-13552 |
| Yanmar | 4JF57 | 57 | 4-Stroke | 129671-13552 |
| Yanmar | 4JH80 | 80 | 4-Stroke | 129671-13552 |
| Yanmar | 4JH110 | 110 | 4-Stroke | 129671-13552 |
Technical Specs
- Product Type
- Marine Exhaust Elbow
- Installation
- Direct OEM replacement
- Fuel Type
- Diesel
- Connection
- 1" (25.4mm) water inlet, 3" (76.2mm) discharge diameter
- Housing Material
- 316 Stainless Steel (INOX)
- Housing Color
- Silver/Metallic
- Dimensions
- 21.4cm x 13.9cm x 10.2cm
- Weight
- 2.0 kg (4.5 lbs)
- Fitting Type
- Direct bolt-on
- Manufacturing
- Investment cast using lost wax technique, CNC machined for precision
- Features
- Corrosion resistant
- Warranty
- 3 years (Aftermarket model)
What’s in the Box
- 1 x Stainless Steel Exhaust Elbow (129671-13552INOX)
- 1 x Gasket (129472-13520) - included with select versions
Installation Notes
- Ensure the engine is completely cool and the main battery switch is off.
- Close the raw water intake seacock.
- Carefully disconnect the hoses from the old exhaust elbow.
- Unbolt and remove the old elbow and gasket. Discard the old gasket.
- Thoroughly clean the mating surface on the manifold or turbocharger to ensure a proper seal.
- Place the new gasket onto the manifold, followed by the new stainless steel elbow.
- Secure the elbow by hand-tightening the bolts, then torque them to the manufacturer's specifications.
- Reconnect the water and exhaust hoses securely.
- Open the raw water seacock and turn the battery switch back on.
- Start the engine and carefully inspect for any water or exhaust gas leaks around the new elbow.
Troubleshooting & FAQ
How do I know if this elbow fits my specific engine?
This part is a direct replacement for Yanmar part number 129671-13552. It is confirmed to fit Yanmar 4JH series models including 4JH4-HTE, 4JH3-DTE, 4JH57, 4JH80, and 4JH110. Always verify your engine model and original part number against our compatibility list before ordering.
Why should I upgrade to a stainless steel elbow?
Standard cast iron elbows are highly susceptible to internal corrosion and blockage from saltwater and carbon buildup. This can restrict water flow and cause engine overheating. Our 316 stainless steel elbow offers superior corrosion resistance, ensuring much longer service life and more reliable engine performance.
What are the signs my old exhaust elbow is failing?
Common symptoms include the engine running hotter than normal, a reduction in power, white steam in the exhaust when the engine is warm, or visible water leaks and rust on the exterior of the elbow itself.
How often should a mixing elbow be inspected or replaced?
We recommend inspecting the elbow annually for signs of blockage, corrosion, or pinholes. While replacement intervals vary based on engine hours and operating conditions, upgrading from cast iron to stainless steel can significantly extend the part's functional lifespan.
Is this an OEM part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility and batch-inspected for consistency and quality.
What are the shipping speed and cost?
We ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free for most regions; any available expedited options will appear at checkout.
What is the warranty and return policy?
This product 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, provided the item is unused and in its original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against 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
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