AMS Performance Heat Exchanger for BMW G8X M2 / M3 & M4 [AMS.48.02.0001-1]

AMS Performance Heat Exchanger for BMW G8X M2 / M3 & M4 [AMS.48.02.0001-1]

Whether pushed on the track, making 200mph roll racing pulls, or operating in hot climates, the AMS Performance BMW G8X Heat Exchanger for the M2, M3, and M4 is engineered to maintain lower intake temperatures and support higher power output. Designed as a high-performance, drop-in solution, this heat exchanger is the largest and most effective option available, delivering superior cooling capacity without requiring any modifications. The 3.0L S58 twin-turbocharged engine in the G8X BMW utilizes an air-to-water intercooler system that relies on coolant to regulate intake air temperatures. While the factory system performs adequately under mild conditions and stock power levels, it quickly becomes a limiting factor during aggressive driving, resulting in heat soak and reduced performance. The AMS Heat Exchanger solves this problem with a 35% larger core and a significantly more efficient design, providing enthusiasts with the cooling performance needed to achieve maximum results from their vehicle.

Engineered for Enthusiasts

• The Snailworks® Engineering Team at AMS Performance applied a meticulous design philosophy by carefully crafting the coolant inlet and outlet fittings with a unique radiused edge. This subtle but critical detail significantly reduces pressure drop and promotes smoother, more efficient coolant flow throughout the intercooler system. By optimizing the geometry of these fittings, the team ensured that coolant enters and exits the heat exchanger with minimal resistance, improving overall system performance. This level of precision and attention to detail distinguishes AMS products from the competition, with every component, no matter how small, engineered for maximum efficiency and performance.

Size Matters

• Maximizing cooling performance within the compact front end of the G8X M3 and M4 presented a significant challenge, leading AMS Performance to develop a heat exchanger featuring a 35% larger core volume, the largest drop-in unit available without requiring cutting or modification. Built around a high-efficiency, dual-pass, motorsport-grade design, the AMS Heat Exchanger rapidly dissipates heat to meet the demands of high-performance driving. With double the coolant capacity of the OEM unit and significantly improved flow characteristics, the system greatly enhances thermal stability across the intercooler system. The result is lower intake air temperatures (IATs), reduced heat soak, and more consistent power delivery during aggressive driving, hot weather, or track use. Whether stock or modified, the G8X S58 engine gains a crucial cooling advantage with this upgrade.

Track Tested, Race Proven

• The AMS Performance BMW G8X Heat Exchanger was not only engineered through CAD design and bench testing but also rigorously validated through in-house and real-world track testing. AMS engineering and calibration teams conducted controlled dyno sessions and street evaluations to monitor intercooler air outlet temperatures under demanding conditions. To further validate its performance, AMS partnered with professional time attack racer Jackie Ding, who tested the system on his BMW M2 race car during Gridlife and Super Lap Battle competition events. Across dyno pulls, street use, and motorsport conditions, the AMS Heat Exchanger consistently delivered lower intercooler air outlet temperatures, recording a peak of 112.8°F compared to 116.4°F for the OEM system. In contrast, the leading aftermarket competitor’s unit performed worse than stock, reaching 120.2°F. Additionally, coolant-based testing revealed a 16°F reduction in outlet temperatures compared to the leading competitor, further demonstrating the superior thermal efficiency of the AMS design from every angle.

Features

• Largest drop-in heat exchanger available
• Dual pass design 35% larger core
• Billet 6061 T6 aluminum end tanks
• 16°F lower coolant temps
• CAD-designed and CNC-machined
• Increased coolant flow and efficiency
• AMS-spec core fin height and density for optimized heat transfer
• Double the fluid capacity over OEM
• Direct bolt-on installation, no cutting or drilling required
• Ideal for stock or modified vehicles

Applications

• BMW M2: G87 (2023-present) [3.0L I6 tt S58]
• BMW M3: G80, G81 (2021-present) [3.0L I6 tt S58]
• BMW M4: G82, G83 (2021-present) [3.0L I6 tt S58]

Notes

• Installation instructions can be found here

About AMS Performance

AMS Performance stands out in the realm of turbocharged vehicle enhancement, not just as a frontrunner in the manufacturing of automotive performance parts but also by providing comprehensive services including in-house engine computer calibration, installations of parts and packages, along with engine and transmission building. Distinctively an engineering-driven entity, AMS differentiates itself from other outfits by designing parts that set the performance standard in the industry, utilizing advanced computer-aided designs and the expertise of mechanical engineers with extensive motorsports background. Since its inception 20 years ago, AMS Performance has maintained its leading position, offering everything from turn-key solutions to bespoke components tailored to surpass a variety of performance objectives. Catering to a wide range of motorsport activities from drag racing to road racing, AMS is dedicated to elevating the driving experience for enthusiasts across the spectrum.