Door Seals For Chevrolet C10 Suburban 1967-1972, C20 Suburban 1967-1972 LM 121-RDesigned for the 1967 1972 GM Suburban Truck, these back left and right cargo door seals replace OEM #3909343 and #3909344, ensuring a precise fit. Crafted from high quality ozone resistant EPDM rubber, these seals are built to last and maintain their shape over time. They mount directly onto the cargo doors using weatherstrip adhesive (not included), providing a secure and reliable seal. These seals are engineered to keep your climate controlled air