# Dinan 17-20 BMW 430i Heat Performance Exchanger

The Dinan B4x/B58 heat exchanger for the F2x/F3x chassis assists in mitigating these issues with a more robust core (48mm thick Dinan core vs. 27mm thick OEM core) that wields 78% more heat transfer surface area for improved cooling capacity. The significant increase in core thickness requires unique "L" shaped end tanks to be incorporated as well, which also contributes to the overall thermal mass (ability to absorb, store, and release heat) improvement beyond the OEM setup. With up to a 15&deg IAT delta recorded over stock the Dinan heat exchanger is ready, and able, to assist in extending your vehicles ability to deliver maximum performance time and time again for your driving enjoyment!

-   Average of 8&deg reduction in IAT's with a maximum reduction of 15&deg over 15 successive WOT pulls
-   Installation hardware included (inclusive of xDrive specific transmission oil cooler brackets)
-   Reduces the tendency to heat soak / go in to limp mode
-   48mm thick Dinan cooler vs. 27mm thick stock cooler
-   78% more cooling surface area and volume than stock
-   100% TIG welded and pressure tested

This Part Fits:

Year

Make

Model

Submodel

2017-2021

BMW

230i

Base

2017-2021

BMW

230i xDrive

Base

2017-2018

BMW

330i

Base

2017-2019

BMW

330i GT xDrive

Base

2017-2019

BMW

330i xDrive

Base

2016-2018

BMW

340i

Base

2017-2019

BMW

340i GT xDrive

Base

2016-2018

BMW

340i xDrive

Base

2017-2020

BMW

430i

Base

2017-2020

BMW

430i Gran Coupe

Base

2017-2020

BMW

430i xDrive

Base

2017-2020

BMW

430i xDrive Gran Coupe

Base

2017-2020

BMW

440i

Base

2017-2020

BMW

440i Gran Coupe

Base

2017-2020

BMW

440i xDrive

Base

2017-2020

BMW

440i xDrive Gran Coupe

Base

2017-2021

BMW

M240i

Base

2017-2021

BMW

M240i xDrive

Base

## Details

- **Price:** 852.51 CAD
- **Vendor:** Dinan
- **Type:** Radiators

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 852.51 CAD | In stock |

## Images

- Photo - Primary
- Photo - out of package
- Photo - out of package
- Photo - out of package
- Photo - out of package
- Photo - out of package
- Photo - out of package

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/dinan-17-20-bmw-430i-heat-performance-exchanger)
> Updated: 2026-07-05