Equipment Part Number: These gaskets, identified by part number 18-0722, serve as a direct replacement for Mercruiser elbow gaskets with part numbers 27-864850a01 and 27-864850a02. Compatibility: The dry joint riser gaskets are designed to fit for Mercruiser engines with dry joint configurations, specifically for 4.3L, 5.0L, 5.7L, and 6.2L V6 and V8 models. Durable Quality: Crafted from premium materials, our for Mercruiser riser gaskets undergo rigorous leak testing to ensure they maintain a tight seal under torque requirements. They are engineered to enhance generator power output while minimizing noise and vibration levels. Name:Dry Joint Gasket Part Number:27-864850A02 27-864547A02 18-0722 18-0721 Exhaust Manifold Elbow Riser Gasket Fit on: for Mercruiser 350 MAG MX 6.2L MPI INBOARD 350 MPI ALPHA REMAN 357 MAG BRAVO 4V 357 ALPHA 4V 383 MAG BRAVO 4V 383 MAG 4V MIE REMAN 383 MAG STROKER BRAVO-REMAN 383 STROKER SCORPION 385 PERFORMANCE TUNED 4.3L CARB ALPHA/BRAVO 4.3L MPI ALPHA/BRAVO 5.0, 350, 377 MAG MPI STERNDRIVE 5.0L / 5.7L STERNDRIVE 5.0L, 350, 377 MAG MPI STERNDRIVE 5.0L, 350 MAG,MX 6.2L MPI STERNDRIVE 5.7/6.2L MPI INBOARD 5.7L INBOARD - 5.7L CARB MIE 5.7L MPI SKI - 5.7L MPI SKI 5.7L MPI TOWSPORT WITH GEN III 5.7L TOW SPORT - 5.7L CARB SKI Color:As Shown Material:Metal Package Contents: 2 * Dry Joint Gasket