GM Performance 141-366 high tech grey valve cover hold down clamps for Chevy small block engines. Features the Bowtie logo. Provides more clamping force for a better valve cover seal. Sold as a pack of 4 valve cover hold down clamps. Order 2 packs for a complete set. GM Performance 141-366 grey Chevy small block valve cover hold down clamps 141-366 HOURS: 11:00 am to 6:00 pm Monday - Friday Eastern Standard Time We welcome CANADIAN customers! For ordering information, click on "Orders To Canada" at the top left side of this page. We will not ship to freight forwarding - expediting companies. PAYMENT METHODS: PayPal, Visa, Mastercard, Discover, American Express, money orders.