| Make | Model | Year |
|---|---|---|
| Buick | Le Sabre | 1959-1964, 1975 |
| Pontiac | Acadian | 1968-1971 |
| Beaumont | 1965-1969 | |
| Bonneville | 1958-1974 | |
| Catalina | 1958-1976 | |
| Chieftain | 1958 | |
| Executive | 1967-1970 | |
| Firebird | 1967-1976 | |
| Grand Am | 1973-1975 | |
| Grand Prix | 1962-1976 | |
| Grand Safari | 1971-1976 | |
| Grandville | 1971-1975 | |
| GTO | 1964-1973 | |
| Laurentian | 1958-1974, 1976 | |
| LeMans | 1968-1976 | |
| Parisienne | 1959-1974, 1976 | |
| Safari | 1967 | |
| Star Chief | 1958-1966 | |
| Strato-Chief | 1958-1970 | |
| Super Chief | 1958 | |
| Tempest | 1961, 1968-1970 | |
| Ventura | 1960-1961, 1971-1976 |
Percy's Seal-4-Good™ Exhaust Header Gaskets (66041) by Patriot Exhaust®. The Percy's Seal-4-Good Reusable Flange Gaskets are multi-layered and made from a special "Dead Soft" Aluminum, which conforms to header flanges for the ultimate seal. Since the Seal-4-Good is made from multiple layers of dead soft metal, it easily conforms to small imperfections that a copper gasket simply can not. Due to this construction, these gaskets will not blow out or burn out when properly installed. This superior Patriot Exhaust product is just for you. Carefully designed for maximum performance, is will more than just meet your needs and expectations. This product is built from top-grade materials to ensure high quality and provide years of reliable service.
| Series: Percy's Seal-4-Good™ |
| Port Size: 2.0" x 1.50" |
| Inlet Port Shape: Oval / D-Port |
| Port shape: Oval / D-Port |
Patriot Exhaust® Products is known as the primary exhaust provider to the street rod, custom car and muscle car enthusiast. It continues the tradition of delivering quality products and offering the best value for the dollar of any header brand in the industry for more than 40 years. The brand offers many different style mufflers to adjust the sound of your ride and best suit your needs, from the classic Smithy's®, the world's oldest performance muffler for that "resto-rod" or your 1950's custom to a Varaflow® Tunable Muffler allowing you to tune out annoying drones on the highway and make more noise on “Cruise Night.” At Patriot Exhaust, they also make several classic header and exhaust styles, ranging from Lakester style headers for the Bonneville and Dry Lakes look to Fenderwell headers for the gasser look. Plus, the brand has many racing headers and DIY weld-up header kits and exhaust accessories and tubing to help you get your project off the ground and closer to completion.