# Yanmar 3GMD 128370-13550 Stainless Mixing Elbow Replacement GMS5

**Yanmar 12837-13550 Stainless Steel Exhaust Mixing Elbow Replacement**

Stainless Steel Exhaust Mixing Elbow

Suitable for Yanmar 3GMD, 3GM30-YEU, 3HM35

Replaces Yanmar 12837-13550

Includes gasket that replaces Yanmar PN 128370-13231

Precision CNC machined investment cast 316 stainless steel

Flange thickness is 45% thicker than OEM. Yanmar .220 (5.7mm) HDI Marine .320 (8.2mm)

Tube thickness is 56% thicker than OEM. Yanmar .062 (1.5mm) HDI Marine .097 (2.5mm)

2" (50mm) Exhaust outlet

Product weighs 2.5 lbs (1.1kg)

Shipping weight is 3.5 lbs (1.6kg)

This is a non-OEM, aftermarket part HDI GMS5.

## Details

- **Price:** 645.0 AUD
- **Vendor:** HDI Marine
- **Tags:** Sawley’s AAM Aftermarket – Exhaust Elbows Mixers & Risers – Yanmar HDI | Marine Exhaust Elbows Risers & Mixing Elbows

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 645.00 AUD | In stock |

## Images

- Yanmar 3GMD 128370-13550 Stainless Mixing Elbow Replacement GMS5

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/yanmar-3gmd-128370-13550-stainless-mixing-elbow-replacement-gms5)
> Updated: 2026-06-23