Equipment Part Number: These gaskets, identified by part number 18-0722, as a direct replacement for elbow gaskets with part numbers 27-864850a01 and 27-864850a02. Compatibility: The dry joint riser gaskets are designed to fit for engines with dry joint configurations, specifically for 4.3L, 5.0L, 5.7L, and 6.2L V6 and V8 models. Quality: Crafted from premium materials, our for riser gaskets undergo rigorous leak testing to 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 350 MX 6.2L MPI INBOARD 350 MPI ALPHA REMAN 357 4V 357 ALPHA 4V 383 4V 383 4V MIE REMAN 383 STROKER -REMAN 383 STROKER 385 PERFORMANCE TUNED 4.3L ALPHA/ 4.3L MPI ALPHA/ 5.0, 350, 377 MPI STERNDRIVE 5.0L / 5.7L STERNDRIVE 5.0L, 350, 377 MPI STERNDRIVE 5.0L, 350 ,MX 6.2L MPI STERNDRIVE 5.7/6.2L MPI INBOARD 5.7L INBOARD - 5.7L MIE 5.7L MPI SKI - 5.7L MPI SKI 5.7L MPI TOWSPORT WITH GEN III 5.7L TOW SPORT - 5.7L SKI Color:As Shown Material:Metal Package Contents: 2 * Dry Joint Gasket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.