CSF BMW S54 Swap E36 High-Performance All-Aluminum Radiator

The BMW S54 engine is widely regarded as one of the most iconic and revered powerplants in BMW's history. Celebrated for its exceptional power delivery, balanced performance, and distinctive acoustic signature, the S54 continues to captivate enthusiasts who appreciate naturally aspirated engines despite the prevalence of turbocharged alternatives. While the S54 may not match the sheer power potential of modern turbo inline-six engines, its unique characteristics have fueled a growing trend within the BMW community: swapping the S54 into the E36 chassis.

Although the S54 swap is considered a relatively straightforward upgrade in terms of fitment, it presents notable challenges—particularly concerning the cooling system adaptations required to ensure reliable operation within the older E36 platform. Recognizing these challenges, CSF has developed a dedicated solution: the CSF BMW S54 Swap Radiator and Oil Cooler specifically engineered for the E36 chassis.

Product Details

Design & Engineering

Leveraging CSF’s industry-leading expertise and extensive experience with high-performance BMW cooling systems, the design of this radiator represents a significant advancement tailored to the unique demands of the S54 swap. Drawing upon the knowledge gained from producing premium cooling solutions for both the E36 and E46 platforms, CSF has crafted an innovative product that addresses the broadest range of S54 swap applications.

At first glance, the CSF #7211 radiator bears a resemblance to the company’s E36 M3 Radiator (#3054), sharing a similar overall shape. However, the #7211 incorporates several critical enhancements that distinguish it as the optimal choice for S54 swap installations. Given that the S54 engine necessitates a more robust oil cooling system than the original E36 S52/S50 engines, CSF has engineered the radiator to accommodate two different race-spec oil coolers. This design flexibility also allows the radiator and oil cooler combination to be compatible with S50 and S52 swaps.

To facilitate this, the radiator’s height has been slightly reduced, enabling the installation of CSF race-spec oil coolers in a factory-style location. The package includes a custom-designed oil cooler mounting bracket compatible with both the CSF #8032 and #8240 oil coolers. Additionally, a bespoke radiator cover plate optimizes the coolant overflow line placement, concealing it for an OEM+ aesthetic that maintains the vehicle's factory appearance.

CSF also provides brackets designed for an electric fan conversion, engineered to fit a single 16-inch SPAL fan (fan not included). While retaining the original clutch-type fan is possible, converting to an electric fan simplifies installation and offers additional performance advantages, including improved cooling efficiency and reduced parasitic power loss.

The radiator features a 2-row, 42mm thick all-aluminum core, delivering the maximum coolant capacity and exceptional heat dissipation capabilities. CSF’s exclusive B-Tube Technology enhances heat transfer efficiency by approximately 15% compared to conventional oval welded tubes. Complementing this, the super-efficient multi-louvered fins maximize airflow through the core, ensuring optimal cooling performance under demanding conditions.

All mounting brackets are precision CNC machined to guarantee accurate fitment and durability. The cooling system inlet and outlet connections utilize OEM-style slip-on fittings consistent with the E36 platform, facilitating straightforward installation without the need for custom modifications.

Features

• 2-Row, 42mm Ultra-High-Performance Aluminum Core for Superior Cooling Capacity
• CSF’s Proprietary B-Tube Technology for Enhanced Heat Transfer Efficiency
• 6.5mm Tall Multi-Louvered Fins Designed for Maximum Surface Area and Airflow
• Precision CNC Machined Mounting Brackets and OEM Style Inlet/Outlet Connections
• 100% All-Aluminum Construction with TIG Welding for Strength and Reliability
• Elegant Smooth Satin Finish for Corrosion Resistance and OEM+ Appearance
• All-Aluminum Race Style Drain Plug for Easy Maintenance
• Includes Two Top Covers (Black and Satin) to Customize the Radiator’s Appearance
• Fan Brackets Included for 16-inch SPAL Electric Fan Installation (Fan Not Included)
• Oil Cooler Mounting Br

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