The PLM Heat Exchanger PLM-ME55-HEAT-EXCHANGER is a direct-fit, performance cooling upgrade for Mercedes-Benz E55, CLS55, and SL55 AMG supercharged models. With 1.8 liters of coolant capacity and 4000 square inches of fin area, it is engineered to combat heat soak and reduce intake air temperatures (IAT) during extreme conditions or under increased boost.
Built using non-epoxied furnace-brazed cores and CNC-machined billet aluminum necks, this heat exchanger delivers exceptional durability, thermal efficiency, and ease of installation. Whether you’re driving on the street or track, this is the most cost-effective, bolt-on solution available.
VEHICLE FITMENT
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Mercedes-Benz E55 AMG
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Mercedes-Benz CLS55 AMG
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Mercedes-Benz SL55 AMG
INSTALLATION NOTES
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E55 AMG: Direct bolt-on install
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CLS55 / SL55 AMG: Requires drilling 2 holes in side brackets (no cutting on vehicle)
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SL55 AMG: Requires a longer hose for driver-side port; hose available free with SL55 selection
CORE SPECS
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Overall Length: 35.5"
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Core (excluding end tanks): 28.5"
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Height: 5.5"
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Thickness:
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Standard Version: 2.5"
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KEY FEATURES
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Bolt-on installation – no cutting or car modifications required
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Reduces IAT for improved performance and consistency
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1.8L fluid capacity and 4000 in² fin surface area
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Non-epoxied furnace-brazed core for optimal heat transfer
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TIG-welded aluminum construction
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CNC-machined billet aluminum necks for precise fitment
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Optional XL version offers increased core thickness for even more cooling capacity available HERE