# Cummins 6BTA & QSB5.9 Exhaust Mixing Elbow 6" x 1.5" CAST 316 Stainless HDI C5.9

Aftermarket Stainless steel 316 Marine exhaust kit for Cummins BTA 5.9 and QSB 5.9

-   This HDI Marine item replaces Cummins PN 3919373
-   Fits the following engines: 6BTA 5.9 / QSB 5.9
-   Precision CNC machined, investment cast 316 stainless steel
-   Purchase includes turbo-side flange, dry elbow, mixing elbow, insulation blanket, 2 v-band clamps, gaskets HDI GC (Graphite) & HDI GCS (Stainless).
-   6" (152mm) OD exhaust outlet
-   Designed for a 1.5" OD water barb (1.5″ NPT, not included)
-   Shipping weight is 22 lbs (10kg)

HDI Marine Part HDI C5.9

## Details

- **Price:** 2750.0 AUD
- **Vendor:** HDI Marine
- **Tags:** Sawley’s AAM Aftermarket – Exhaust Elbows Mixers & Risers – Cummins HDI | Marine Exhaust Elbows Risers & Mixing Elbows

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2750.00 AUD | In stock |

## Images

- Cummins 6BTA & QSB5.9 Exhaust Mixing Elbow 6" x 1.5" CAST 316 Stainless HDI C5.9

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/cummins-6bta-qsb5-9-exhaust-mixing-elbow-6-x-1-5-cast-316-stainless-hdi-c5-9)
> Updated: 2026-06-23