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S. B. International, Inc. 053-141-000
SBI Performance Valve Spring. Precision-manufactured valve train component by S.B. International, Inc.
QualCast, LLC 32-04014
Spring Engine Valve Spring Inside Diameter 1.067 Outside Diameter 1.420 Closed Pressure 69 @ 1.740 Open Pressure 145 @ 1.320
S. B. International, Inc. 160-1352
SBI Valve Spring. Specifications: Closed Pressure: 65@1.500, Coils / Turn Direction: 7.20 LH, I.D: 0.736, Length: 1.800, O.D.: 1.048, Open Pressure: 135@1.200, Solid Height: 1.100, Wire Diameter: 0.156.
