Sierra International Cylinder Head Assembly For Gm Sb 5.7L Mid Models 18-4485HP. 7L high performance engines (mid models). All GM cylinder heads utilize high performance screw-in rocker arm studs. Cylinder heads are new castings. Hardened steel exhaust...
Sierra International Cylinder Head Assembly For Gm Sb 5.7L Mid Models 18-4485HP. 7L high performance engines (mid models). All GM cylinder heads utilize high performance screw-in rocker arm studs. Cylinder heads are new castings. Hardened steel exhaust...
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