Auto Trans Output Shaft Seal National 3543 New in Carquest Or National Oil Box Brand: National Oil Seal Carquest Model: 3543 Shipped with USPS Ground Advantage Mail. You Will Receive 1 ea RARE VINTAGE COLLECTIBLE SHIPS N 24 HOURS Packed By Our Award Winning Packaging And Shipping Department Long Time E-commerce Seller For Over 20 Years LIMITED AVAILABILITY Follow Our Store For Rare Products Posted Daily and Specials Please click https://www.ebay.com/usr/boughtnowcommerce Our Inventory Box Number: 11001 Enhance the performance of your vehicle with the National 3543 Auto Trans Output Shaft Seal, designed for durability and precision. This seal is part of the 3000 Series, known for its robust construction and ability to withstand the demanding conditions of modern automatic transmissions. Sold in a pack of two, this set is ideal for custom or performance applications, ensuring a reliable seal to maintain proper transmission function. Crafted from high-quality silicone material, the seal features a bi-directional lip design for excellent fluid retention and a reduced friction seal for smooth operation. With an Inside Diameter of 1.378 inches and an Outside Diameter of 2.167 inches, it fits seamlessly, providing a perfect interface with your transmission's components. The product comes with a 90-day manufacturer warranty, ensuring peace of mind with your purchase.