# 4019855CN Cummins 6BT Heat Exchanger 4019855CN 4x25 Replacement MR COOL

Cummins 6BT 6 Cyl Heat Exchanger 4019855CN Replacement

4" x 25-3/4" (4" Diameter x 25.68" long shell, copper nickel core).

Copper nickel (CUNI) for superior erosion resistance in salt water applications.

Replaces Cummins 4019855 for Cummins 4-6 Cylinder engines.

Zinc Anode: 9-036

This is a replacement part from MR COOL (USA) MRC4019855CN.

Shipping -Box = 16 kgs - 92 x 32 x 33 cm

## Details

- **Price:** 2563.0 AUD
- **Vendor:** Mr Cool
- **Tags:** Sawley’s AAM Aftermarket – Cooling Systems Mr Cool | Marine Heat Exchangers & Kits

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2563.00 AUD | In stock |

## Images

- 4019855CN Cummins 6BT Heat Exchanger 4019855CN 4x25 Replacement MR COOL
- 4019855CN Cummins 6BT Heat Exchanger 4019855CN 4x25 Replacement MR COOL
- 4019855CN Cummins 6BT Heat Exchanger 4019855CN 4x25 Replacement MR COOL
- 4019855CN Cummins 6BT Heat Exchanger 4019855CN 4x25 Replacement MR COOL
- 4019855CN Cummins 6BT Heat Exchanger 4019855CN 4x25 Replacement MR COOL
- 4019855CN Cummins 6BT Heat Exchanger 4019855CN 4x25 Replacement MR COOL

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/4019855cn-cummins-6bt-heat-exchanger-4019855cn-4x25-replacement-mr-cool)
> Updated: 2026-06-23