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Description

AMS Performance Limited Edition Heat Exchanger for BMW G8X M2 / M3 & M4

Whether being 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 sustain higher power output. Designed as a high-performance, drop-in solution, this heat exchanger stands as the largest and most effective option available, offering 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, relying 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, leading to heat soak and reduced performance. The AMS Heat Exchanger addresses this issue with a 35% larger core and a significantly more efficient design, tailored for enthusiasts seeking maximum performance from their vehicle.

Engineered for Enthusiasts

The Snailworks® Engineering Team at AMS Performance applied their meticulous design philosophy by carefully engineering the coolant inlet and outlet fittings with a unique radiused edge. This seemingly minor detail plays a critical role in reducing pressure drop and promoting 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, enhancing overall system performance. This level of precision and attention to detail distinguishes AMS products from the competition, demonstrating that every component, no matter how small, is engineered for maximum efficiency and performance.

Size Matters

Maximizing cooling performance within the tight front end of the G8X M3 and M4 is a significant challenge, which is why the AMS Performance Heat Exchanger features a 35% larger core volume, the largest drop-in unit available without requiring any cutting or modification. Built around a high-efficiency, dual-pass, motorsport-grade design, this 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 AMS Heat Exchanger 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 sessions. Whether stock or modified, the G8X S58 engine gains a critical cooling advantage with this upgrade.

Track Tested, Race Proven

The AMS Performance BMW G8X Heat Exchanger was not solely engineered in CAD or limited to bench testing—it was rigorously validated through in-house and on-track testing. The engineering and calibration teams conducted controlled dyno sessions and street evaluations to monitor intercooler air outlet temperatures under demanding conditions. To further validate performance, AMS collaborated 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 real-world motorsport conditions, the AMS unit consistently delivered lower intercooler air outlet temperatures—achieving a peak of just 112.8°F compared to 116.4°F for the OEM system. Notably, the leading aftermarket competitor recorded even higher temperatures at 120.2°F. In a separate coolant-based evaluation, the AMS Heat Exchanger demonstrated a 16°F reduction in coolant outlet temperatures versus the leading competitor, further proving 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.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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AMS Performance Limited Edition Heat Exchanger for BMW G8X M2 / M3 & M4 [AMS.48.02.0001-2]

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AMS Performance Limited Edition Heat Exchanger for BMW G8X M2 / M3 & M4

Engineered for Enthusiasts

Size Matters

Track Tested, Race Proven

Features

Applications

Notes

About AMS Performance

Reviews