This is a Right Side Tuned Pipe for .12 size engines The "SC" stands for "Spring Connect" which means it uses springs to attach the Tuned Pipe to the Header FEATURES: Polished natural aluminum construction INCLUDES: One Tuned Pipe OSMG2982 w/permanently fixed pressure fitting One Header OSMG2609 One Exhaust Seal Ring (used between tuned pipe and header) Exhaust Seal Ring (Gasket) OSMG8871 (between header and engine) Three Joint Springs OSMG2961 (used to connect tuned pipe to header) One Manifold (Header) Spring OSMG2633 to attach header to engine One 4x4x0.7mm set screw to secure to tuned pipe mount on vehicle REQUIRES: 2mm hex wrench for set screw SPECS: See Tuned Pipe OSMG2982 & Header OSMG2609 for details COMMENTS: Other Right Side Tuned Pipes Include: OSMG2972 72103056 TUNED PIPE T-1040 R52 The above are not "Spring Connect", they use couplers OSMG8875 OS EnginesPart OSM72106510