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| OE NumberAH166991 | Part NameMulti Coupler Block | Cross ReferenceAH201340, AH208706, HXE117551, AMX27551 | Main MaterialHigh-strength Solid Steel |
| Working Pressure250 Bar Rated Working Pressure | Working Temperature-25°C ~ +100°C | Core AdvantageIntegrated design, no leakage, high pressure resistance, quick connect & disconnect | |
| ApplicationFarm field high-load harvesting, all-weather outdoor operation | |||
Compatible Models
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Matches original John Deere standard with part number AH166991. Perfect fit without modification, plug-and-play for targeted header hydraulic systems.
Integrates 3×1/2” and 2×3/8” ORFS interfaces with color-coded couplers. Centralized pipeline arrangement avoids misconnection and boosts assembly efficiency.
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.
Adopts ISO 16028 flat-face sealing structure, withstands high hydraulic pressure. Ensures stable oil transmission and sensitive header movement without pressure loss.
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.
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.
A1: This part is a direct replacement for John Deere OEM number AH166991, and it crosses with AH201340, AH208706, HXE117551, and AMX27551.
A2: It is highly compatible with John Deere Draper platforms (625D to 936D), John Deere corn heads (493 to 1293 series), and various hydraulic drive headers (615F to 930R series).
A3: The block has a rated working pressure of 250 Bar and is designed to perform in extreme temperatures ranging from -25°C to +100°C.
A4: By adopting the ISO 16028 flat-face sealing structure, it ensures zero leakage during connection/disconnection, preventing fluid loss and keeping environmental dirt out of the hydraulic system.
A5: It is constructed from high-strength solid steel through professional integral forging and CNC precision machining for maximum durability and vibration resistance.
A6: Yes. Its 5-port integrated design features color-coded couplers and a quick-release locking structure, making quick-connect pipeline assembly fast, correct, and secure.
