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When it comes to engine performance, hot air is the enemy. These phenolic spacers do an excellent job of reducing heat soak in the intake manifold by removing the metal-to-metal contact between the manifold and head. Thus, leading to reduced intake air temperatures and denser air. An additional benefit is that cooler air has a higher resistance to knock, allowing more ignition timing advance - or boost. Either way, they both equal more power!
EARLY AEB & LARGE PORT 1.8T 20V CYLINDER HEADS
*Causes interference with coolant hard pipe and alternators on longitudinal mounted engines on B5 & B6 A4/Passat
034 Motorsports
