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Exhaust Mixing Elbow 128890-13530 – Fits Yanmar 2YM15 3YM20 3YM30
- $162.80
- $162.80
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How to Match This Part
This aftermarket exhaust mixing elbow replaces Yanmar Marine reference 128890-13530. It mixes raw cooling water into the exhaust stream and routes the mixture away from compatible Yanmar YM-series marine diesels.
Match this part in this order:
1. Original part number on the elbow or parts list (128890-13530 or superseded 128397-13530)
2. Engine model on the engine identification plate
3. Physical form and hose sizes against the product images and your existing hoses
Confirm a square 4-bolt flange, a straight main tube with a vertical water-injection port near the flange, an 11/16" (17 mm) water inlet, and a 2" (50 mm) exhaust outlet before ordering. See the product images for flange orientation and port location.
Part Number Cross-Reference
Use this table to confirm equivalent Yanmar mixing-elbow references for this application.
| Reference Type | Brand | Part Number | Notes |
|---|---|---|---|
| Primary OEM Reference | Yanmar | 128890-13530 | Current mixing elbow reference |
| Supersession | Yanmar | 128397-13530 | Prior elbow; replaced by 128890-13530 |
Compatible Engine Models
Confirm your engine model and year in the table below. Match the original part number and the physical shape to the product images. Find the model code on the engine identification plate.
| Brand | Engine Model |
|---|---|
| Yanmar Marine | 2YM15 |
| Yanmar Marine | 3YM20 |
| Yanmar Marine | 3YM30 |
Some YM engines changed mixing-elbow hose size by serial range. Verify your water-injection hose ID matches the 11/16" (17 mm) inlet on this unit before purchase.
Technical Specifications
| Specification | Value |
|---|---|
| Product type | Exhaust mixing elbow |
| Material | Stainless steel |
| Mounting flange | Square 4-bolt flange |
| Water inlet | 11/16" (17 mm) vertical injection port |
| Exhaust outlet | 2" (50 mm) |
| Form | Straight tube with flange-end water port |
Installation Guide
1
Allow the engine to cool completely and disconnect the battery before starting work.
2
Compare the new elbow to the original for square 4-bolt flange layout, vertical water-port location, and hose diameters before removing the old part.
3
Remove the old elbow, clean the manifold mating face, and install a suitable exhaust gasket and fasteners as specified in the engine service manual (gasket commonly referenced as Yanmar 128370-13201 or equivalent).
4
Seat the new elbow on the flange, tighten fasteners evenly to the manufacturer’s torque values, then reconnect the water inlet hose and 2" exhaust hose with secure clamps.
5
Reconnect the battery, start the engine, and check for water or exhaust leaks at the flange and hose joints before returning the vessel to service.
Note: Follow the Yanmar service manual for torque and gasket requirements. Professional installation is recommended.
Troubleshooting & FAQ
Important Notes
- A wrong water-inlet size can leak, overheat, or allow seawater into the exhaust path—always verify hose ID and OEM number.
- This unit uses a square 4-bolt flange and a straight-tube form; do not confuse it with triangular 3-bolt Yanmar elbows used on other series.
Why Choose JLM MARINE?
- Quality Control: Each batch is inspected for dimensional consistency and workmanship.
- Direct from Manufacturer: Aftermarket marine parts built for the applications listed on this page.
We can ship to virtually any address in the world with free shipping available for most regions.
For our typical US and Canadian customers , our shipping timeframes are as follows:
- Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
- US warehouse shipment: orders will be delivered within 5 days after placing the order.
- China warehouse shipment: orders will be delivered about 12 days after placing the order.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.
As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.
We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.
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