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AH166991, AH201340, AH208706, HXE117551. AMX27551.(1) (1).png

AH166991 Multi Coupler Block, Coupling for John Deere

The AH166991 Multi Coupler Block is an OEM-standard integrated hydraulic quick coupling block specially engineered for John Deere combine harvester draper header front hydraulic systems. As a core centralized hydraulic connection component, it adopts a 5-port multi-coupler integrated structure, replacing scattered single hydraulic joints to achieve one-step quick connection and disconnection of header hydraulic pipelines. It effectively solves common field problems such as messy pipeline layout, wrong connection, hydraulic pressure loss and oil leakage, greatly speeding up header installation, replacement and daily maintenance efficiency. Strictly manufactured according to John Deere original dimensional and technical standards, it is a perfect direct replacement wear part for John Deere grain harvesters to restore stable hydraulic control performance of the cutting header.

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    SELECTION TABLE
    FEATURES
    APPLICATION

    OE Number AH166991 Part Name
    Multi Coupler Block
    Cross Reference AH201340, AH208706, HXE117551. AMX27551 Main Material
    High-strength Solid Steel
    Working Pressure 250 Bar Rated Working Pressure Working Temperature
    -25°C ~ +100°C
    Core Advantage
    Integrated design, no leakage, high pressure resistance, quick connect & disconnect
    Application
    Farm field high-load harvesting, all-weather outdoor operation
    Compatible Model
    Draper platforms with hydraulic front and rear drive - 625D, 630D, 630FD, 635D, 635FD, 640FD, 725D, 730D, 730FD, 735D, 735FD, 740D, 740FD, 745FD, 925D, 930D, 936D
    John Deere corn heads - 493, 494, 594, 692, 693, 694, 706C, 708C, 708FC, 712C, 712FC, 716C, 718C, 892, 893, 894, 1092, 1290, 1291, 1293
    ASN 685400 with multi-port adapter, suitable for 60 series combine harvesters
    headers with hydraulic front and rear drive - 615F, 615R, 618F, 618R, 620F, 620R, 622F, 622R, 625F, 625R, 630F, 630R, 635F, 635R, 913F*, 913 R*, 915F*, 915R*, 916F*, 916R*, 918F*, 918R*, 922F*, 922R*, 924F*, 924R*, 925F*, 925R*, 930F* 930R*

    - OEM Direct Replacement: Matches original John Deere standard with part number AH166991. Perfect fit without modification, plug-and-play for targeted header hydraulic systems.
    - 5-Port Integrated Design: Integrates 3×1/2” and 2×3/8” ORFS interfaces with color-coded couplers. Centralized pipeline arrangement avoids misconnection and boosts assembly efficiency.
    - Sturdy & Deformation-proof: Made of high-strength solid steel via integral forging and CNC precision machining. High rigidity resists vibration and impact, suitable for long-term high-load farm operation.
    - Zero Leakage & Stable Hydraulics: Adopts ISO 16028 flat-face sealing structure, withstands high hydraulic pressure. Ensures stable oil transmission and sensitive header movement without pressure loss.
    - Strong Environmental Adaptability: Premium anti-rust and wear-resistant coating prevents corrosion from dust, mud and humidity. Maintains stable performance in -25°C to +100°C extreme temperatures.
    - Easy Maintenance & High Safety: Quick-release structure enables fast disassembly and assembly. Reliable locking design prevents pipeline loosening, improving equipment operational safety.

    The AH166991 Multi Coupler Block is suitable for John Deere 600 series draper headers, compatible with models 618, 620, 622, 625, 625D, 630 and 1450CWS combine harvesters. It is installed on the front side of the header hydraulic system, serving as the dedicated original replacement coupling block for daily repair, overhaul and parts renewal.