Wagner Tuning BMW M3/M4 F80 F82 F83 S55 Low Temp Radiator & Heat Exchanger Kit – Chargecooler/Intercooler Water Radiators F8x Performance Cooling Upgrade

Uprated Low‑Temperature Heat Exchanger Package for BMW M3 F80 and BMW M4 F82 F83 – S55

Unlock reliable, repeatable power on road and track with this premium low‑temp cooling upgrade by Wagner Tuning. Designed specifically for the S55-powered F80 F82 F83 platform, this auxiliary cooler set supercharges the water‑to‑air charge‑cooling loop to keep intake temps in check, fight heat soak and protect performance on tuned and stock cars alike.

Ideal for fast road, track days, drag runs and hot‑climate driving. We have fitted this kit on customer cars and our own builds and the results are brilliant – stronger consistency, quicker recovery between pulls and rock‑solid temps lap after lap.

Why this S55 cooling upgrade

• Big increases in core volume for the charge‑cooler circuit:
  • Front position: 8.5 litres vs 4.5 litres – up by 89 percent
  • Side position: 3.2 litres vs 1.65 litres – up by 94 percent
• Larger frontal area for improved heat rejection:
  • Front position: 2660.5 cm² – up by 46.4 percent
  • Side position: 473.8 cm² – up by 14.9 percent
• High‑efficiency cores maximise heat transfer while maintaining airflow to the main engine radiator
• Thermally conductive anti‑corrosion coating for long‑term durability
• Bolt‑on fitment using OE connections – no cutting, OE‑style install

Perfect for

• BMW M3 F80, BMW M4 F82 and BMW M4 F83 with the 3.0 S55 twin‑turbo engine
• Stage 1, Stage 2 and hybrid‑turbo builds seeking lower IATs and reduced heat soak
• Track day and fast‑road enthusiasts wanting stable performance and reliability

Technical details

• Front heat exchanger size: 568 x 468.4 x 32 mm – volume 8.5 L, area 2660.5 cm²
• OE front reference: 590 x 308 x 25 mm – volume 4.5 L, area 1817 cm²
• Side heat exchanger size: 252 x 188 x 68 mm – volume 3.2 L, area 473.8 cm²
• OE side reference: 250 x 165 x 40 mm – volume 1.65 L, area 412.5 cm²

What is included

• Front low‑temperature heat exchanger
• Side low‑temperature heat exchanger
• Carbon air shroud for the side unit for improved ducting
• Fitting hardware
• Installation instructions

Search terms you might know this by

BMW M3 M4 S55 cooling upgrade, F8x low temp radiator, charge‑cooler radiator, water‑to‑air heat exchanger, auxiliary radiator kit, intercooler water radiator, uprated radiators for S55, IAT reduction kit, track cooling package, performance cooling system.

Fitting and support

Professional installation recommended. MJ Modifications in Warwickshire can supply and fit this kit – contact us for a quote at info@mjmodifications.co.uk.