WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.The APR Coolant Performance System (CPS) Radiator (MS100127) is a massive front-mounted heat exchanger upgrade designed for the Audi 3.0T and 4.0T platforms. Heat soak is the primary enemy of supercharged and turbocharged engines; as Intake Air Temperatures (IATs) rise, the ECU pulls timing, resulting in a significant loss of horsepower. The APR CPS remedies this with a core that is 140% larger than the factory B8 unit, ensuring your engine stays cool and powerful even under repeated hard pulls or track use.
Engineering excellence is at the core of this system. It features a dual-pass core design with tightly packed louvered fins that maximize surface area for rapid heat dissipation. Perhaps the most critical feature is the self-bleeding cooling circuit. Air bubbles are notorious for killing cooling performance in VAG platforms; the APR system automatically and constantly purges trapped air without the need for manual intervention, ensuring the radiator always operates at 100% efficiency.
Features:
- Significant Cooling Gains: Dramatically lowers IATs and retains horsepower by minimizing power-robbing heat soak.
- Massive Core Volume: Boasts 382.8 in² of frontal surface area—a 140% increase over the stock B8 component.
- Dual-Pass Efficiency: Coolant travels through the core twice, allowing for maximum thermal exchange before returning to the engine.
- Self-Bleeding System: Automatically removes performance-killing air bubbles from the circuit for maintenance-free optimization.
- OEM Integration: Retains all factory safety protocols, allowing the ECU to continue monitoring for pump failures or leaks.
- Proven Reliability: Every unit is fully pressure-tested post-assembly to ensure leak-free operation under high-stress conditions.
Core Dimensions Comparison:
| Specification | OEM (B8) | APR CPS |
|---|---|---|
| Dimensions | 29" x 5.5" x 2.1" | 22" x 17.4" x 1.7" |
| Frontal Surface Area | 159.5 in² | 382.8 in² |
| Total Volume | 54 in³ | 130 in³ |
Performance Note: This upgrade is highly recommended for vehicles running Stage 2 dual-pulley setups or 4.0T models with upgraded turbochargers, where heat management is the single biggest factor in maintaining consistent power.
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