The best marine diesel exhaust mixing elbow is one that matches your engine model, original part number, and installation dimensions. These five stainless steel replacement options list broad fitment for Yanmar GM, HM, YM, QM, and YSM engines. The first and fourth options provide detailed dimensions, while the second and fifth emphasize bottom-position installation. Verify your engine and part number before ordering.
| Product | Best For | Key Check |
|---|---|---|
| Teilelager Store | Buyers comparing detailed dimensions | Thread, diameter, gasket, and aperture |
| Buxatina Store, broad fitment | Buyers needing listed bottom-position fitment | Engine and part number |
| Buxatina Store, 104214-13531 | Buyers matching this replacement number | Confirm the complete part-number match |
| Stainless Steel Elbow with Gasket | Buyers seeking a listed gasket and dimensions | Confirm original part number |
| QNCKJZV Store | Buyers checking bottom-position fitment | Confirm exact engine application |
Teilelager Stainless Steel Mixing Elbow
This option is best for Yanmar owners who want to compare fitment against stated measurements as well as engine and replacement numbers. The listing gives a 2.45-by-3.5-inch gasket size, a 3/8-inch water-inlet thread, a 2-inch outer diameter with a 1-1/4 BSPT inner diameter, and 9 mm mounting apertures.
Its listed applications span GM, HM, YM, QM, and YSM series, with numerous replacement numbers including 104214-13531 and 128370-13610. Choose it if those specifications match your original elbow. The limitation is that broad fitment listings do not establish compatibility with every engine configuration; check dimensions and part numbers before purchase.
Buxatina Elbow With Broad Yanmar Fitment
This is best for buyers whose engine appears in the listing’s extensive GM, HM, YM, QM, or YSM application list and who need a replacement for a listed part number. The seller identifies the installation position as the bottom and names replacements such as 104214-13531, 124070-13520, and 128370-13610.
The listing recommends confirming fitment and using the appropriate service manual. It also advises seeking help from a qualified mechanic if the installer lacks the manual or experience. Choose this option when the application and part number align; avoid relying on engine-family names alone if your exact model is uncertain.
Buxatina Elbow For Part Number 104214-13531
This option is best for owners replacing an elbow associated with 104214-13531 or another number included in its cross-reference list. It lists Yanmar GM, HM, YM, QM, and YSM engines, including models such as 2GM20F, 3GM30F, 3HM35F, 3YM-30, and YSM12.
The listing describes it as a mixing elbow replacement and recommends verifying compatibility and following the service manual. It does not provide the dimensional details shown by some other options here, so compare the original elbow’s measurements and connection details before choosing it. Professional installation is suggested when the manual or installation skills are lacking.
Stainless Steel Elbow With Gasket
This is best for buyers looking for a listing that specifies a gasket size alongside the elbow’s fitment information. It lists a 2.45-by-3.5-inch gasket, a 3/8-inch water inlet, a 2-inch outer diameter, a 1-1/4 BSPT inner diameter, and 9 mm mounting apertures. Applications include several Yanmar GM, HM, QM, YM, and YSM engines.
Replacement numbers include 124070-13520, 104214-13531, and 128990-13520. The listing says to confirm the original part number before ordering. Its stated dimensions make comparison more straightforward, but buyers should still verify that the included or referenced gasket and connection specifications suit their application.
QNCKJZV Bottom-Position Mixing Elbow
This is best for buyers whose application matches the listed Yanmar models and requires a bottom-position mixing elbow. Its fitment list covers GM, HM, YM, QM, and YSM series, and its cross-references include 104070-13520, 104214-13521, 124070-13520, 127070-13520, and 128270-13600.
The listing advises checking compatibility with the existing part and following service-manual guidance. It does not provide the dimensional specifications included with some alternatives, so compare the old elbow and verify its part number before ordering. Consult a qualified mechanic if installation is outside your experience.
Buying Guide: How To Choose A Marine Diesel Mixing Elbow
Which engine and part number should you match?
Start with the engine’s complete model designation, not just its Yanmar family. The product listings cover overlapping models, but the specific suffix can matter when confirming application. Compare the number on the existing elbow with the replacement numbers listed for the product. If the number is missing or unclear, consult the engine’s service information or a qualified marine mechanic.
Which dimensions and connections should you compare?
Check the gasket footprint, water-inlet thread, exhaust diameter, and mounting apertures against the original part. The first and fourth products list a 3/8-inch inlet thread, 2-inch outer diameter, 1-1/4 BSPT inner diameter, 9 mm apertures, and a 2.45-by-3.5-inch gasket measurement. Treat those as listing specifications to verify, not as universal dimensions for every Yanmar elbow.
Does stainless steel alone establish fit?
No. Material description does not confirm that an elbow has the correct shape, ports, mounting position, or fitment for a particular engine. Compare the physical connections and part number, and confirm that the listing covers your exact model. Installation should follow the appropriate service manual; seek qualified help if you are not equipped to perform the work.
Frequently Asked Questions
What does a marine diesel exhaust mixing elbow do?
A mixing elbow is part of a marine engine’s exhaust system where exhaust and cooling water are combined before discharge. The correct replacement must match the engine and its connections.
Are these elbows listed for Yanmar engines?
Yes. The five listings identify applications across selected Yanmar GM, HM, YM, QM, and YSM models. Exact coverage differs, so verify your full engine model and replacement number.
Are all five products dimensionally identical?
The available product details do not establish that. Some listings provide measurements, while others emphasize engine fitment and replacement numbers. Compare your original elbow before ordering.
Should I install a mixing elbow myself?
Use the appropriate service manual and assess your experience before beginning. Some listings recommend a qualified mechanic for buyers without installation guidance or sufficient skills.