PLM Heat Exchanger & Reservoir Kit PLM-AUDI-B8-COMBO – Fits Audi A4/S4 B8 & B8.5 (Supercharged)

The ultimate bolt-on cooling solution for supercharged Audi B8/B8.5 A4 & S4 models.
The PLM Heat Exchanger & Reservoir Kit (PLM-AUDI-B8-COMBO) is a complete combo that pairs PLM’s high-performance heat exchanger with a 4-liter aluminum reservoir tank—providing maximum cooling power for your VR-equipped Audi.

If you’re running more boost or power, your intake air temps (IAT) can spike, especially under heat soak conditions. PLM’s upgraded heat exchanger boasts a 417 square inch fin area, CNC-machined billet aluminum necks, and a furnace-brazed, non-epoxied core. Meanwhile, the stealth-mounted reservoir tank increases your system’s fluid volume by 4 liters, helping to further lower engine temps during hard driving.

This is the only affordable, no-cutting-required combo kit on the market—giving you the best value and performance in one box.

VEHICLE FITMENT

• Audi A4 B8 / B8.5 (Supercharged)

• Audi S4 B8 / B8.5 (Supercharged)

KEY FEATURES

• Complete combo: heat exchanger + reservoir tank

• Frontal surface area increased by 135% vs. OEM

• 417 in² fin surface area for superior cooling

• All-aluminum construction

• 100% hand TIG-welded

• Dual-pass core for maximum efficiency

• CNC-machined billet aluminum necks

• Reservoir tank adds 4 liters of cooling capacity

• Reservoir mounts stealthily behind the bumper

• Includes hoses, brackets, and all required hardware

• Bolt-on installation – no cutting or major mods required

• Designed to drastically reduce intake air temps (IAT)

INSTALLATION INFO

• Basic hand tools required

• Instructions included (PDF)

Note: For supercharged engines only. Ideal for tuned or high-performance Audi applications.