Feature:1. OE Number: The replacement part number are 3747 123, 10102 8426, 8387 8516A. Please check the part numbers whether it suits your vehicle before purchasing.2. Strong Compatibility: Specially designed for 3.7L 4.7L Engines 1999 to 2013, maintains your vehicle's efficiency and protects the integrity of engine components, ensuring a precise fit.3. Powerful Function: Safely remove camshaft, rocker arms, and hydraulic lash adjusters in 3.7 and 4.7 liter engines without damage to the camshaft or camshaft lobes.4. Valve Spring Access: The valve spring tool provides access to the valve keeper, enabling the use of a magnetic for removal. This feature facilitates the replacement and maintenance process.5. High Durability: Constructed from superior heat treated steel for maximum durability. Hardened for solid, no deformation, this tool is built to last and provide long lasting strength.Specification:Item Type: Rocker Arm Remover Material: SteelOE: 3747-123, 10102 8426, 8387 8516AFitment: for 3.7L 4.7L Engines 1999-2013.Package List:1 x Rocker Arm Remover Kit(2PCS)Note:Please double check the part number of your item, matching information is for reference only.