"A.R.E." is producing a line of Stainless Steel Heat Shields for 1.75 SUs & Strombergs. These are assembled to each pair of carburetors with existing hardware, typically with no modifications. Now available is a new Weber Heat Shield in Stainless Steel for 40mm & 45mm DCOE Carburetors. These are assembled with existing hardware to each carburetor. This is an inexpensive way to protect the internal components of your expensive Webers, in addition to reducing heat soaking and affecting performance. Heat Shields are standard equipment on many sports cars, and almost always custom fabrications on race cars. Heat is an enemy of performance. Fuel handling is influenced by heat. It can lead to fuel percolation (vapor lock), but cool fuel is always a better performer.