DNA Motoring BOITCL+PPJETTA9918T Bolt-On Intercooler+Piping Kit [For 99-05 JETTA/GOLF GTI Mk4/A4 1.8L]

When the charged air enters the end tank, it travels through the tubes of an Intercooler, in which the heat is transferred via fins, where cooler ambient air passes over the tubes. This mechanism further removes heat from air before exiting the opposite end tank and routing to the engine.

Bar and Plate Intercooler functions identically to the Tube and Fin Core, with the exception that, charged air travels through its rectangular shaped passages, which have more surface area; thus, improves cooling effect and power of the charged air. The advantage of this type of intercoolers is that, since the bar and plate core affords up to 35% larger surface area for cooling, a physically smaller intercooler can be used and still retains the cooling efficiency of a larger tube and fin design. This is important for a builder who has a vehicle with a compact opening in the front of it or when there are immovable obstructions present.