Pacific Performance Engineering (PPE) Air-To-Water Intercooler Kit
Fits 2020-2026 3.0L Duramax I6 Diesel (LM2) · 3.0L Duramax I6 Diesel (LZ0)
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Replaces the factory air-to-water intercooler that cools the turbocharged 3.0L Duramax diesel's intake air before it reaches the engine. Bigger core and better flow than stock, so the engine gets cooler, denser air, especially when towing or working hard.
why this one — PPE is one of the most established diesel cooling brands and this is their purpose-built kit for this exact engine, not a universal-fit part. Sourced through Pure Diesel Power, an approved affiliate retailer, at a lower price than PPE's own site ($1,214.99 vs $1,349.99 direct).
PPE's own product page claims up to 30 degrees F lower intake air temp, 77% less restrictive than the stock intercooler, and a 2.4x larger core; no independent dyno HP/TQ test found, and PPE does not publish an HP/TQ number for this kit.
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.