John Deere KK74143 Spring Breakaway Boom and similar items

JOHN DEERE KK74143 - BREAKAWAY BOOM EXTENSION SPRING SET (2-PACK) Genuine OEM Replacement for Self-Propelled Sprayers SPECIFICATIONS OEM Part Number: KK74143 Replaces OEM: KK14424 Brand: John Deere (Genuine) Type: Breakaway Boom Extension Spring Quantity: 2 Springs (Sold as a Complete Set) Origin: Mexico Condition: Used - Pulled from working environment, verified good working order COMPATIBLE EQUIPMENT MODELS This spring set fits the following John Deere Self-Propelled Sprayers: • R-Series: R4030, R4038, R4044, R4045, R4060 • 400/410/412 Series: 408R, 410R, 412R • Precision Upgrades: R4030/408R, R4038/410R, R4044/412R, R4045/612R, R4060/616R • F-Series Legacy: F4365, 800R, 4940, 612R, 616R Note: This part is critical for boom safety systems, allowing the boom to retract safely after contact with obstacles. PRODUCT DETAILS Application: Agricultural spraying, crop protection, precision farming maintenance. Function: Provides tension for breakaway boom sections, ensuring return to operational position after impact. Condition Note: These springs were removed from a functioning sprayer in a working environment. They have been inspected and are confirmed to be in good working order with no visible damage, fatigue, or loss of tension. Ideal For: Fleet maintenance, dealer repair stock, field restoration, and minimizing downtime during harvest seasons. ?? IMPORTANT: Verify your machine's serial number and existing part number KK74143 or KK14424 before purchase. While this list covers standard factory configurations, modifications may affect fitment.