Quicksilver 27-46820 GasketHigh-quality exhaust manifold gasket for V8 engines 454540 CID used in MerCruiser, OMC, and Volvo Penta sterndrives and inboard systems. Designed to maintain a secure seal and reliable exhaust flow. Refer to your service manual for application and installation guidance.Features: Fits GM-based V8 engines (454, 482, 496, 502 & 540 CID); Compatible with select MerCruiser, OMC, and Volvo Penta sterndrive and inboard engines; Designed to match Mercury Marine OEM specifications; Ideal for maintaining exhaust system integrity and engine performance;