YOU ARE LOOKING AT A NOS LH ROCKER ARM GM GROUP #0.333 PART #1234503 TO FIT ALL 1970 WILDCAT, 1970-1972 BUICK GRAN SPORT, SPORTWAGON, ELECTRA, ESTATE WAGON, RIVIERA, SKYLARK & 1971-1972 CENTURION MODELS WITH 350-455ci V8 ENGINES. THIS LH ROCKER ARM IS FOR INTAKE VALVES ON CYLINDERS #2-#3-#6-#7 & EXHAUST VALVES ON CYLINDERS #1-#4-#5-#8, IS IN EXCELLENT SHAPE & HAS NEVER BEEN INSTALLED.
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