






⚓ Seal your ride, sail with pride!
TonGas offers a 24-pack of premium aftermarket lower unit drain screw gaskets designed as exact replacements for Yamaha part numbers 90430-08020-00 and 90430-08003-00. Crafted from durable Japanese hard fiberboard, these oil-resistant gaskets ensure a secure, leak-proof seal for Yamaha 4-stroke outboard motors, including popular 150HP and 175HP models. Engineered to meet or exceed OEM standards, TonGas gaskets provide reliable, long-lasting protection for your marine engine’s lower unit.






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