Fuel Rail Diaphragms & Tool Kit Fit Mercury 804533 8m6002988 889431

2PCS 8M6002988 1PCS 804533 1PCS 889431. This diaphragm fits both the air and fuel regulator on all of the Optimax 3.0L Model Engines (200 - 300 HP). The previous models were either green or brown in color.