VALVE SPRINGS. Engine Pro 5.7L HEMI applications: D-5.7Hemi-G1 | CK345; D-5.7Hemi-G1 | CK345-01; D-5.7Hemi-G1 | CK345-03; D-5.7Hemi-G1 | CK345-04. Supplier fitment/source is a historical snapshot; confirm VIN/MDS/VVT before ordering. Unit of sale/size selection should be confirmed with EBW.