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Wagner Tuning Side Mounted Radiator Kit for F8x M3 and M4

Wagner Tuning Side Mounted Radiator Kit for F8x M3 and M4

Wagner Tuning Side Mounted Radiator Kit for F8x M3 and M4 [400001003.SM]

$1,250.00

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The Wagner Tuning Competition water cooler kit significantly increases cooling capacity for the BMW M3 and M4 S55 engine by combining upgraded front and side radiators, boosting coolant volume by up to 94% and 89% respectively. This improved thermal management lowers operating temperatures and helps maintain consistent, high power output for spirited driving, tuned builds, and track use.

These items are typically not in stock and either made-to-order or special order from the manufacturer. After you order we will confirm the estimated lead time and other order details. If you have a specific deadline to receive this order please talk to us before placing your order to ensure that the manufacturer can meet your expectations.

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SKU: 400001003.SM Categories: Powertrain, Engine Parts, Radiators Vehicle: BMW, BMW 3 Series, BMW 4 Series, BMW M3, BMW M4, Brand: Wagner Tuning

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Description

Wagner Tuning Side Mounted Radiator Kit for F8x M3 and M4

Wagner Tuning developed the Competition water cooler kit to resolve a key cooling limitation in the 3.0-liter S55B30 turbo engine used in the BMW M3 and M4. This engine operates with an indirect intercooler system in a low-temperature circuit, where coolant temperature has a direct impact on performance. By combining a front and side water cooler, Wagner Tuning dramatically increases the system’s cooling capacity. The side cooler alone expands coolant volume by 94%, complemented by an additional 89% increase from the front cooler, resulting in a substantial reduction in operating temperatures. This enhanced thermal control enables the engine management system to maintain higher and more consistent power output, making the kit an ideal solution for high-performance driving, tuned setups, and track-focused applications.

Why the Wagner Tuning Radiator is the Best Choice for Your S55

Wagner Tuning’s side water cooler delivers a significant performance upgrade with an impressive 94% increase in cooler volume within the low-temperature circuit compared to the factory unit. It effectively reduces coolant temperatures in the indirect intercooler circuit, improving intercooler efficiency and preventing heat-related power loss caused by heat soaking. Built around Wagner Tuning’s high-performance Competition intercooler core technology, the system ensures maximum heat transfer while maintaining optimal airflow, further enhanced by the included carbon air duct for the side radiator. For long-term durability, the cooler features a heat-conducting anti-corrosion coating that provides reliable and consistent cooling performance. The kit is fully approved and legal, now supplied with a parts certificate for safe and uncomplicated registration, and installation is straightforward thanks to its virtually plug-and-play design and detailed instructions.

Features

Increases coolant volume by approximately 94% over the factory side cooler
High-performance competition radiator core for improved heat dissipation
Helps lower coolant temperatures and reduce heat soak
Improves intercooler efficiency and overall thermal stability
Includes carbon fiber air duct for optimized airflow
Heat-conductive anti-corrosion coating for long-term durability
Direct replacement with near plug-and-play installation
Includes all necessary mounting hardware and instructions

Specifications

Dimension: 252mm x 188mm x 68mm
Volume: 3.2 Liters (+94% vs OEM)
Surface Area: 473.8cm² (+14.9%)

Applications

BMW M3: F80 | 2014-2018 | S55 3.0L I6 twin-turbo
BMW M4: F82, F83 | 2014-2020 | S55 3.0L I6 twin-turbo

About Wagner Tuning

Wagner Tuning is a Germany-based performance engineering brand specializing in high-efficiency charge-air cooling and intake solutions for modern turbocharged vehicles. Known for its competition-proven intercoolers and precision-manufactured components, Wagner Tuning combines advanced R&D, CFD analysis, and rigorous testing to deliver measurable performance gains, improved thermal stability, and long-term reliability. With a strong focus on motorsport-inspired engineering and OEM-level fit and finish, Wagner Tuning products are designed to support both high-performance street driving and demanding track use across a wide range of European and international platforms.

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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