Mishimoto BMW S58 Auxiliary Radiators (Pair) G8X M2 M3 M4 2021+ (G80 G82 G83 G87) | Performance Side Coolers | 25% Larger Core | Aluminum TIG-Welded | Direct Fit

Uprated Side Radiators for BMW S58 G-Series M Cars

Keep coolant temps rock steady on your G80 G82 G83 G87 with this pair of Mishimoto side-mounted heat exchangers designed for the S58. Built for hard road use and track days, these uprated side rads deliver dependable thermal control and confidence lap after lap.

Key advantages

• Approx 25 percent larger core volume than the factory side rads for stronger heat rejection
• Alloy construction throughout with TIG welded end tanks for long-term durability
• Strutted tubes add rigidity against vibration and stone impacts
• Increased fluid capacity helps stave off heat soak during repeated pulls
• Supplied as a matched left and right pair to refresh both lateral cooling modules
• Designed to mount to the original locations for a straightforward bolt-on install

Real-world results

We run these side radiators on our own S58 builds and have fitted them for customers who drive hard on circuit and fast B-roads. Feedback is consistently positive, with stable temperatures, improved consistency in hot weather and confidence when pushing tuned or stock engines.

Built to take abuse

The enlarged cores and extra coolant volume increase heat capacity, helping your S58 manage sustained high load, spirited driving and track sessions. Robust TIG welded aluminium end tanks and strutted tubes provide strength where it matters. Optional steel stone guards are available separately for added protection.

What is included

• 2 x Mishimoto performance side radiators for S58-powered G8X models
• Mishimoto Lifetime Warranty
• Optional steel stone guards available separately

Fitment

Suits 2021 onwards BMW G8X S58 models including G80 M3, G82 and G83 M4, and G87 M2.

Professional installation

We recommend professional fitting. MJ Modifications, based in Warwickshire, can install these for you. Request a quote at info@mjmodifications.co.uk.

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