Engine Oil Cooler Aluminium Liquid-Cooled for Audi A4 B8, A5, A6 C6, Q5, Q7

Maintain optimal engine oil temperatures with the MAX NOLOGY Engine Oil Cooler—an aluminium, liquid-cooled solution designed for Audi A4 B8, A5, A6 C6, Q5 and Q7, as well as VW 3.0 TDI applications. Built to fit directly into the existing oil-cooling circuit, this unit helps prevent oil overheating during high-load driving, towing, or hot-weather operation. The result is steadier oil temperature, reduced wear, and improved reliability for your turbocharged 3.0 TDI engines.

Crafted from durable aluminium and featuring a brazed cooling fins radiator design, this oil cooler combines lightweight strength with efficient heat transfer. Its compact footprint (22 cm x 12 cm x 12 cm) allows for straightforward installation and direct replacement using OEM-standard dimensions. With OEM numbers 059117021K and 03H117021C/D/E/G, it aligns with Audi/VW parts catalogs while delivering a fresh, 100% new component for your vehicle.

Designed to meet OEM standards, the cooler is engineered for long-term performance under normal use and carries a generous warranty of 3 years or 50,000 kilometers. It’s compatible with a range of 3.0 TDI models listed in the vehicle compatibility data and is intended to slot into the existing system without requiring modification.

To ensure accurate fitment, please share your vehicle VIN when inquiring about compatibility. The VIN (17 characters) can be found on the lower corner of the windshield or your vehicle registration document.

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Benefits & Tips

• Protect engine bearings and turbo components by maintaining stable oil temperatures under heavy loads and high ambient temperatures.
• Choose this direct-replacement cooler to minimize installation time and avoid custom fabrication, ensuring a clean OEM-style integration.
• Use in vehicles listed for 3.0 TDI models to prevent oil thinning during sustained high-speed driving or towing, extending oil life and engine durability.

Product specifications

• Brand Name: MAX NOLOGY
• Model Number: MKL-OI009
• OEM No.: 059117021K; 03H117021C, 03H117021D, 03H117021E, 03H117021G
• Fitment: For AUDI / VW 3.0TDI
• Material: Aluminium
• Cooling Type: Liquid-cooled
• Radiator Type: Brazed Cooling Fins
• Size: 22 cm × 12 cm × 12 cm
• Origin: Mainland China
• Warranty: 3 Years or 50,000 Kilometers
• Condition: 100% New Product

Package includes:

• 1 piece of Engine Oil Cooler

Warnings/Reminders

• To ensure correct fitment, verify compatibility with your vehicle using the VIN (17-character code) and reach out with your VIN to confirm the part fits your exact model and year.
• Follow proper installation procedures and torque specifications as per OEM standards to avoid leaks or improper cooling.