# MEC 130-7489-02CN ONAN MDKD & MDKB HEAT EXCHANGER MEC 130-7489-02CN

Heat exchanger suits Onan marine generators:

MDKD: MDKDK, MDKDL, MDKDM, MDKDN.

MDKB (SPEC D-G): MDKBK, MDKBL, MDKBR, MDKBS, MDKBT, MDKBU

Replaces Onan 130-7489-02. Copper nickel tubes for superior corrosion resistance.

Bundle length approx 10" & bundle diameter approx 2".

Anode 130-4434 9-125 (3/8") fits this exchanger.

This is similar to 130-7489-03 but 130-7489-03 has a sensor port in the seawater connection and the hose is straight.

Onan Heat Exchanger 130-7489-02 CN Heat Exchanger Onan 2" x 10-5/8"

This is a Mr Cool (USA) part MRC130-7489-02CN.

## Details

- **Price:** 960.0 AUD
- **Vendor:** Mr Cool
- **Tags:** Sawley’s AAM Aftermarket – Cooling Systems Mr Cool | Marine Heat Exchangers & Kits

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 960.00 AUD | In stock |

## Images

- MEC 130-7489-02CN ONAN MDKD & MDKB HEAT EXCHANGER MEC 130-7489-02CN
- MEC 130-7489-02CN ONAN MDKD & MDKB HEAT EXCHANGER MEC 130-7489-02CN
- MEC 130-7489-02CN ONAN MDKD & MDKB HEAT EXCHANGER MEC 130-7489-02CN
- MEC 130-7489-02CN ONAN MDKD & MDKB HEAT EXCHANGER MEC 130-7489-02CN
- MEC 130-7489-02CN ONAN MDKD & MDKB HEAT EXCHANGER MEC 130-7489-02CN
- MEC 130-7489-02CN ONAN MDKD & MDKB HEAT EXCHANGER MEC 130-7489-02CN
- MEC 130-7489-02CN ONAN MDKD & MDKB HEAT EXCHANGER MEC 130-7489-02CN
- MEC 130-7489-02CN ONAN MDKD & MDKB HEAT EXCHANGER MEC 130-7489-02CN
- MEC 130-7489-02CN ONAN MDKD & MDKB HEAT EXCHANGER MEC 130-7489-02CN
- MEC 130-7489-02CN ONAN MDKD & MDKB HEAT EXCHANGER MEC 130-7489-02CN

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/mec-130-7489-02cn-onan-mdkd-mdkb-heat-exchanger-mec-130-7489-02cn)
> Updated: 2026-06-23