body { font-family: Arial, sans-serif; line-height: 1.6; color: #333; margin: 20px; } h2 { font-size: 1.5em; color: #2c3e50; margin-top: 30px; border-bottom: 2px solid #eee; padding-bottom: 5px; } p { font-size: 1em; margin-bottom: 15px; } ul { padding-left: 20px; margin-bottom: 20px; } ul li { margin-bottom: 10px; list-style-type: disc; } table { width: 100%; border-collapse: collapse; margin-bottom: 30px; } table th, table td { text-align: left; padding: 10px; border: 1px solid #ddd; font-size: 0.95em; } table th { width: 40%; font-weight: bold; } table tr:nth-child(even) { background-color: #fafafa; } Driveshaft Flange Bolts Product Description This drive shaft bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance. Direct replacement - this engine mount bolt matches the fit and function of the factory part on specified years, makes and models Ideal solution - this drive shaft bolt is a reliable replacement for an original part that is missing or has failed due to fatigue Durable construction - this part is made from quality materials to ensure reliable performance and long service life Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience Product Specifications Color: Black Grade: 12.9 Head Drive Type: Twelve Point Head Integral Washer Outside Diameter: 17.75 mm Length: 38.5 mm Material: Carbon Steel Package Contents: 4 Bolts Package Quantity: 4 Packaging Type: Card Selling Package Quantity UOM: Piece Thread Diameter: 12 mm Thread Length: 27 mm Thread Sealer Included: Yes Thread Type: Medium OE Numbers N800594S100 FORD MOTOR COMPANY N811880S100 FORD MOTOR COMPANY Fitment Year Make Model Configuration Positions Application Notes 1977 Mercury Comet RWD Rear Buy with confidence – If you encounter any issues with your Dorman product, simply reach out to us. We are committed to ensuring your satisfaction and will assist with any return or exchange requests that meet our policy guidelines. Why Choose Dorman? Dorman is a trusted leader in OE-style replacement parts, offering precision-engineered solutions for reliable performance. Each part undergoes rigorous testing to ensure durability, safety, and a seamless fit. Designed as a cost-effective alternative to OEM parts, Dorman provides high-quality replacements backed by expert engineering. Choose Dorman for dependable, long-lasting automotive solutions.