Pacific Performance Engineering (PPE) Intercooler Coolant Heat Exchanger
Fits 2020-2026 3.0L Duramax I6 Diesel (LM2) · 3.0L Duramax I6 Diesel (LZ0)
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Swaps in a bigger radiator-style heat exchanger that cools the coolant loop feeding the factory air-to-water intercooler. The stock one runs hot under load, so a bigger unit keeps intake air temps down when towing or in hot weather.
why this one — Same brand and platform as the intercooler kit above, sized specifically for this factory system instead of a universal fit. Diesel Power Products lists it with a Quick Ship badge (in stock) at a lower price than PPE's own site, which showed conflicting in-stock/out-of-stock text.
Diesel Power Products' listing and PPE's own page claim 20-35 degrees F lower coolant temps reported by users, a 20% larger core, and 15% lower pressure drop; no independent dyno HP/TQ test found and none published by PPE.
No published gain figure for this part, and nothing here is a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See how we check a price and our affiliate disclosure.