These front vent window seals are molded from original parts to give you a perfect fit and reliable weatherproofing for your 1973-1979 Chevrolet and GMC vans and trucks. Made from high-quality rubber, they ensure a durable seal to keep out wind and rain. They install directly into the vent window frame and come as left and right pieces for easy replacement. Left and right molded seals included Designed from original parts for correct fit Installs into the vent window frame Note: Division post seals are not included; see part 70-3780-56 if needed.Made in the USA and guaranteed to fit. Check your vehicle compatibility before ordering.Installation tip: Remove old seals carefully, clean the frame, then press the new seals firmly into the vent window channels for a snug fit.