20-24 GM LM2/LZ0 Intercooler Coolant Heat Exchanger Pacific Performance Engineering Air Inlet Elbow|Cold Air Intake|Performance (1) -8AN 90 to Push

(1) -8AN 90 to Push Lock Fittings

(1) -6AN Straight to Push Lock Fitting

For even less fuel flow restriction

1/4 Fip To M18-1

AC Delco Equivalent P/N: PF66

20-24 GM LM2/LZ0 Intercooler Coolant Heat Exchanger Pacific Performance Engineering Air Inlet Elbow|Cold Air Intake|Performance (1) -8AN 90 to PushThe GM 3. 0L Duramax utilizes an air to liquid intercooler to keep its intake air cool. However, the stock intercooler's performance is largely dependent on the efficiency of the front mounted coolant heat exchanger. This heat exchanger absorbs heat from the intercooler coolant and dissipates it to the ambient air. If the heat exchanger becomes heat saturated, it will greatly impact the efficiency of the intercooler, and affect engine performance.