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Wide Compatibility – Engineered to work with a wide range of LS-based engines including LS1, LS2, LS3, LS6, and LSX. Supports 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L displacements. No Rocker Arm Disassembly Required – one or two valve springs can be removed at a time without disassembling the rocker arm bracket - saving labor and protecting components. Durable structure – Constructed from premium-grade steel, the bolts and compression plates offer exceptional strength and long-term durability. Engineered to handle the intense pressure exerted by high-tension valve springs without bending or breaking. OEM Replacement – Designed as a direct substitute for factory part number 67605, this valve spring compressor tool ensures a precise fit and reliable performance during LS engine service. Package Includes Essentials – Comes with Valve Spring Compressor, Air Valve Holding Hose ,studs, and nuts. Valve springs and lubricant not included. Brand Tamirey Model 99121 Item Weight 1.5 pounds Manufacturer Tamirey Item model number 99121 Package Dimensions 8 x 4.75 x 1.6 inches Manufacturer Part Number Blk