If you’re turning your GM into a race car, you can get better performance by removing the EGR system. With EGR block-off plates from Mad4Metal, you can seal the hole left behind. Our plates are made in-house from aircraft-grade aluminum, and we include stainless steel fasteners for a long-lasting, trouble-free fit.
The plates on this page will fit any EGR port designed to work with the Fel-Pro gasket PN 70978. If you’re looking for an EGR block-off plate Chevy 350 solution, these plates will fit your engine. What about Oldsmobile EGR block plates? These models fit the 3.8-liter V6, as well as several other inline 4s, V6s and V8s. Want a Pontiac EGR block plate? These plates fit 4.9-liter small blocks used in the Firebird, as well as many other four-cylinder and V6 engines used by the brand. If you’re looking for EGR valve block-off plates for Buicks, these plates fit most engines, including the 3.8-liter V6 and the 455.