Mishimoto MMRAD-G80-21A Auxiliary Perf. Radiators for 21-25 BMW G8X M2/M3/M4

Vehicle Fitment

• 2021-2025 BMW M3 (G80, S58 3.0L Twin Turbo, RWD)
• 2021-2025 BMW M3 Competition (G80, xDrive AWD variants included)
• 2022-2025 BMW M3 Competition xDrive (G80, AWD)
• 2024 BMW M3 CS (G80, S58)
• 2021-2025 BMW M4 (G82/G83, S58 3.0L Twin Turbo, RWD)
• 2021-2025 BMW M4 Competition (G82/G83, AWD and RWD options)
• 2021-2025 BMW M4 Competition xDrive (G82, AWD)
• 2023+ BMW M2 (G87, S58 Twin Turbo, RWD)

Fitment Notes

• Includes both left and right auxiliary radiators as a pair; bolt-on installation with no modification needed.
• Compatible with stock or modified cooling systems; optional steel stone guards can be added for protection.
• Best used alongside the Mishimoto Performance Heat Exchanger for a full cooling system upgrade.

Features

• 25 % increase in core volume for significantly improved heat dissipation.
• Durable aluminum end tanks, TIG-welded to reinforced cores.
• Strutted core tubes designed to resist vibration and impact stress.
• Lifetime Warranty backed by Mishimoto for worry-free performance.

Specifications

• Part Number: MMRAD-G80-21A
• Configuration: Sold as a pair (left and right auxiliary radiators)
• Core Dimensions: 11.09 in (L) x 7.48 in (H) x 1.65 in (Thickness)
• Overall Size: 11.63 in x 12.24 in
• Coolant Capacity (each): Approximately 0.32 gallon

Included Components

• 2x Mishimoto Auxiliary Radiators (left & right)

Product Description

The Mishimoto MMRAD-G80-21A is a direct-fit auxiliary cooling solution tailored for 2021 and newer BMW G8X platform high-performance models, including the M2, M3, and M4 variants. Designed to mount seamlessly alongside the factory radiators, this dual-radiator setup boosts thermal capacity by 25 %--a critical edge for dynamic driving and demanding environments.

Constructed with rugged TIG-welded aluminum tanks and strutted cooling cores, these radiators are built to withstand vibration and road debris. They also offer expanded coolant capacity and improved temperature regulation--making them ideal for both OEM and upgraded cooling systems. Backed by Mishimoto's Lifetime Warranty, they offer reliable performance and peace of mind.