Features: The speedometer block pff plug simplifies transmission maintenance, effectively sealing speedometer ports to prevent fluid leaks while optimizing vehicle performances using corrosions resistant engineering grade aluminum. This high temperature resistant aluminum plug eliminates speed sensors interference and ensures long term protective against wear in extreme driving conditions. Ideal for driver seeking to streamlines their automatic transmission systems, this block off plug caters to automotive hobbyists prioritizing reliability during upgrades or repairs. From daily commutes to high intensity racing environments, this plug maintains transmission integrity by removing unnecessary speedometer components, enabling smoother power delivery in street rods, and competition setups. This TH350 specific block off plug prevents speed sensors related malfunctions while offering a leak proof solution that withstands rigorous thermal and chemical stresses in modified or stock automatic transmissions. Specifications: Product name: Speedometer block close plug Product Component: Aluminum Product size: 0.9x1.1x0.7 inches For TH350 Package Includes: 1pcs Speedometer Port Delete Plug note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.