SKU: MMHE-G80-21MT | UPC: 840197718421
Mishimoto 2021+ BMW M3/ M4 G8X Manual Performance Heat Exchanger
The Mishimoto performance heat exchanger for 2021+ BMW G8X M3/M4 manual transmission replaces the stock unit with a robust all-aluminum design that maintains low charge air temperatures during track or street driving. It fits 2021-2024 BMW M3 and M4 models plus 2023-2024 M2 with manual transmission for direct bolt-on installation. Larger core volume and enhanced airflow provide consistent cooling to support higher boost levels and prevent power loss from heat soak.
Key Features
- All-Aluminum Construction: Durable end tanks core and CNC-machined ports replace plastic parts with TIG-welded aluminum for strength in harsh conditions.
- Strutted Tubes: Internal struts in the core resist bowing and flexing under high G-forces during cornering.
- Increased Cooling Capacity: 23 percent more core volume 44 percent greater external fin surface area dual-pass flow and louvered fins outperform stock cooling.
- Direct Fit Design: Matches factory mounting points and integrates with OEM components without modifications.
- Steel Rock Guards: Included guards protect against road debris to prevent fin damage or tube punctures.
Product Notes
- Designed specifically for manual transmission models.
- Overall dimensions 25.0in L x 12.0in W x 2.8in H core measures 10.4in x 17.7in x 2.0in.
- Mishimoto Lifetime Warranty covers defects in materials and workmanship.
Installation Notes
- Professional installation recommended.
- Bolt-on design requires basic hand tools and takes 1-2 hours.
- Uses factory mounting hardware no cutting or drilling needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2023-2024 | BMW | M2 | Base |
| 2021-2024 | BMW | M3 | Base |
| 2021-2024 | BMW | M3 | Competition |
| 2022-2024 | BMW | M3 | Competition xDrive |
| 2024 | BMW | M3 | CS |
| 2021-2024 | BMW | M4 | Base |
| 2021-2024 | BMW | M4 | Competition |
| 2021-2024 | BMW | M4 | Competition xDrive |
| 2023-2024 | BMW | M4 | CSL |
Why Choose Mishimoto?
- Lifetime Warranty protects your investment for the long term.
- Full aluminum construction and TIG welding ensure reliability under extreme heat and pressure.
- Engineered with larger core and advanced fins for real-world cooling gains on S58 engines.
Frequently Asked Questions
- Q: Does this fit automatic transmission G8X models?
A: No this SKU MMHE-G80-21MT is for manual transmission only. Automatic models use MMHE-G80-21A. - Q: What materials are used in construction?
A: 100 percent aluminum end tanks core ports and tubing with TIG welds and internal struts for maximum durability. - Q: What warranty is provided?
A: Mishimoto Lifetime Warranty covers manufacturing defects when installed and used as directed.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure corrugated box 24in x 20in x 5in
- Weight: 12.8 lbs product 15.5 lbs shipping
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