BMW M4 Performance Auxiliary Radiator - Mishimoto - Alum - 15-20 is a direct-fit upgrade for the 2015–2020 BMW F8X M3/M4. This robust aluminum unit adds cooling capacity and durability where the factory plastic-tank aux radiator is known to struggle.

Mounted low in the front corners, the OEM aux radiators can heat-soak under repeated hard laps and are vulnerable to debris and fatigue. Mishimoto answers with a larger, fully welded aluminum core featuring 9% more volume and 32% more external tube area to shed more heat when the S55 is working hardest. Strutted tubes reinforce the core against vibration and impacts, a removable stone guard protects the face, and a smart bracket allows the same part to fit either driver or passenger side. It installs in the stock location with no cutting or adapters and is backed by the Mishimoto Lifetime Warranty.

Features

• Direct fit for 2015–2020 BMW F8X M3/M4
• 32% more external tube area and 9% larger core
• Strutted tubes resist vibration and impacts
• TIG-welded aluminum end tanks; no plastic
• Removable stone guard protects the core
• Fits driver or passenger side; uses factory mounts

Have questions or need guidance on your build? Call our specialists at Texas: 512-982-9393 or California: 562-981-6800. We offer installation and customization services at our Austin, Texas location and our Los Angeles, California area shop.

Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.

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