Spark Plug Tube Seals/Top Cover seals for Mark 2 Grande, Altezza, and Harrier with 1G-FE, 1MZ, 2MZ, and 3MZ engines. THG Brand. Made of high-quality NBR material, our seals guarantee a good seal against oil leaks. Other oil seals are also available, for inquiries please feel free to contact us via WhatsApp, phone call, or leave us a message.