Overview

• Manufacturer: John Deere
• Part: DZ104957 High-Pressure Fuel Line, Common Rail To Cylinder 3 and 4
• Purpose: OE replacement fuel line for John Deere PowerTech common-rail diesel engines, delivering high-pressure fuel from the rail to cylinders 3 and 4
• Key specs (OE data): length 7.6 in; weight 0.18 lb
• Application scope: designed to meet John Deere’s exact fitment geometry and connection standard for reliable sealing and fuel flow

Key Features

• Part Number: DZ104957
• Type of machine suitable for: John Deere tractors and combines with a common-rail fuel system; representative models include 7M-series (e.g., 7M 200, 7M 215, 7M 230), 210P/210G, 240D, 250P/250G, 270D, 290G, 310/320/400R DN, 430R, 440R, 460DC, 524P/524K-II, 540H, 544P/544K-II, 548H, 620G/620P/620G, 622G/622P, among others
• Installation tips: follow John Deere service procedures for depressurizing the fuel system, disconnecting power, and handling the line to avoid bending or kinking; replace mating seals as recommended and ensure clean mating surfaces during installation

Compatibility

• Suitable machine models: broad range of John Deere PowerTech machines that use the common-rail to cylinder 3–4 fuel line configuration; consult the OEM fitment chart for exact model mapping
• Alternative part numbers: RE507540 (original cylinder 3–4 fuel line designation), A-DZ104957 (alternate catalog entry), DZ104957 (current OE number); aftermarket equivalents may be listed under AI-A-DZ104957