Honda Original Equipment Thermostat Cover Gasket - 19351-ZV5-000. This part fits: BF115A1, BF115A2, BF115A3, BF115A4, BF115A5, BF115A6, BF115AK0, BF115AX, BF115AY, BF130A1, BF130A2, BF130A3, BF130A4, BF130AX, BF130AY, BF25A, BF25A1, BF25A2, BF25A3, BF25AW, BF25AX, BF25AY, BF25D4, BF25D5, BF25D6, BF25DK0, BF25DK2, BF25DK3, BF30A, BF30A1, BF30A2, BF30A3, BF30AW, BF30AX, BF30AY, BF30D4, BF30D5, BF30D6, BF30DK0, BF30DK2, BF30DK3, BF35AM, BF40A, BF40A1, BF40A2, BF40A3, BF40A4, BF40A5, BF40A6, BF40AK0, BF40AW, BF40AX, BF40AY, BF40D, BF40DK2, BF40DK4, BF45AM, BF50A, BF50A1, BF50A2, BF50A3, BF50A4, BF50A5, BF50A6, BF50AK0, BF50AW, BF50AX, BF50AY, BF50D, BF50DK2, BF50DK4, BF75A1, BF75A2, BF75A3, BF75A4, BF75A5, BF75A6, BF75AT, BF75AW, BF75AX, BF75AY, BF90A1, BF90A2, BF90A3, BF90A4. This is a OEM Honda Part. Thanks for looking!