# NA001831 Perkins 6.354 Heat Exchanger (LONG) NA001831 (20-1/2") Replacement

Replacement Heat Exchanger for Perkins 6.354 6 Cylinder marine engines.

Replaces Perkins part NA001831.

Dimensions:

20-1/2" long; 4-1/8" Diameter Flange. The flange is included with this heat exchanger.

Note there is a shorter version 14-3/8" long and 4-1/8" diameter part NA004490CN

This is a Mr Cool (USA) marine product MRCNA001831.

## Details

- **Price:** 1968.0 AUD
- **Vendor:** Mr Cool
- **Tags:** Sawley’s AAM Aftermarket – Cooling Systems Mr Cool | Marine Heat Exchangers & Kits

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1968.00 AUD | In stock |

## Images

- NA001831 Perkins 6.354 Heat Exchanger (LONG) NA001831 (20-1/2") Replacement
- NA001831 Perkins 6.354 Heat Exchanger (LONG) NA001831 (20-1/2") Replacement
- NA001831 Perkins 6.354 Heat Exchanger (LONG) NA001831 (20-1/2") Replacement
- NA001831 Perkins 6.354 Heat Exchanger (LONG) NA001831 (20-1/2") Replacement
- NA001831 Perkins 6.354 Heat Exchanger (LONG) NA001831 (20-1/2") Replacement
- NA001831 Perkins 6.354 Heat Exchanger (LONG) NA001831 (20-1/2") Replacement
- NA001831 Perkins 6.354 Heat Exchanger (LONG) NA001831 (20-1/2") Replacement
- NA001831 Perkins 6.354 Heat Exchanger (LONG) NA001831 (20-1/2") Replacement

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/na001831-perkins-6-354-heat-exchanger-long-na001831-20-1-2-replacement)
> Updated: 2026-06-23