# Dinan 21-26 BMW 430i High Performance Heat Exchanger

The OE thermal management system for the B4x/B58 G-chassis BMW and Toyota GR Supra offers an improved formula from prior generations. With a setup where engine coolant is also re-routed through the heat exchanger, the system effectively assists in overall engine cooling as well as charge cooling. However, like its predecessors, it has room for improvement as it can be overwhelmed when the system is taxed aggressively or as power levels are increased. Once overburdened, this results in the undesirable outcome of power being diminished. Avoidance of this unwelcome scenario can be attained though with a Dinan heat exchanger that improves the overall thermal management system so everything runs cooler and more efficiently while being budget friendly.

-   Average of 8.7º C reduction in charge air temps with a maximum reduction of nearly 12º C over 30 successive WOT pulls
-   General improvement to the efficiency of the thermal management system, inclusive of engine cooling
-   Durable bar and plate design that is less susceptible to damage from road debris
-   45mm thick Dinan core vs. 26.75mm thick stock cooler core
-   Pressure tested, 100% TIG welded, Aluminum construction
-   Reduces the tendency to heat soak / go in to limp mode
-   Direct fit replacement with no modifications required
-   68% more cooling surface area and volume than stock

This Part Fits:

Year

Make

Model

Submodel

2022-2026

BMW

230i

Base

2023-2026

BMW

230i xDrive

Base

2019-2026

BMW

330i

Base

2019-2026

BMW

330i xDrive

Base

2021-2026

BMW

430i

Base

2022-2026

BMW

430i Gran Coupe

Base

2021-2026

BMW

430i xDrive

Base

2023-2026

BMW

430i xDrive Gran Coupe

Base

2023-2026

BMW

M240i

Base

2022-2026

BMW

M240i xDrive

Base

2020-2026

BMW

M340i

Base

2020-2026

BMW

M340i xDrive

Base

2021-2026

BMW

M440i

Base

2022-2026

BMW

M440i Gran Coupe

Base

2021-2026

BMW

M440i xDrive

Base

2022-2026

BMW

M440i xDrive Gran Coupe

Base

2022-2026

BMW

Z4

M40i

2020-2021

BMW

Z4

sDrive M40i

2019-2026

BMW

Z4

sDrive30i

2021-2022

Toyota

GR Supra

A91 Edition

2020-2026

Toyota

GR Supra

Base

2020-2026

Toyota

GR Supra

Premium

## Details

- **Price:** 661.94 CAD
- **Vendor:** Dinan
- **Type:** Radiators

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 661.94 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-21-26-bmw-430i-high-performance-heat-exchanger)
> Updated: 2026-07-05