
The Component: Genuine Hirschmann 805-120-523 2-way female automotive sealed connector housing plug. SealStar 1.2mm Series (HHA-BU-2-pol. Cod. C) 2-position receptacle socket casing (Black/Blue Accent / PA66 GF / Single-Wire Sealed / Mechanical Keying Code C).
Series Taxonomy: Hirschmann SealStar 1.2mm Sealed Series System. A premium, high-integrity German automotive interconnect platform engineered by Hirschmann to support structural miniaturization. Developed to deliver uncompromising waterproof defense, high thermal threshold capacity, and flawless signal performance under extreme dynamic vibration profiles.
Connector Interface: 2-position (2-way) single-row female socket plug configuration featuring a compact 4.00mm centerline pitch matrix. Designed with an internal contact alignment track keyed specifically to house standard 1.2mm width female socket terminals (such as TE Connectivity MCON 1.2 or MLK 1.2 series contacts).
Locking and Sealing Security: Environmentally sealed to a strict IPX9K high-pressure washdown classification, designed to perform continuously within a severe automotive temperature threshold certified from -40 to +150 degrees Celsius. Equipped with a pre-assembled, integrated top-mounted Connector Position Assurance (CPA) locking mechanism to guarantee perfect hardware latching and safeguard the connection against severe chassis harmonics or engine-block resonance. Employs a robust, high-performance inner radial silicone perimeter compression seal combined with matching rear individual single-wire insulation seals to construct an absolute water-tight, gas-tight moisture barrier. Built according to strict USCAR and LV-214 guidelines.
Mating Complement: Connects inline wire-to-wire or wire-to-device by clicking directly onto its corresponding 2-way male inline tab partner housing assembly under part number 805-120-521, or matching Code C male device headers from the Hirschmann SealStar 1.2 platform.
Common Applications: Extensively specified as a factory original equipment (OE) mainstay across prominent European passenger car networks, luxury transport platforms, and motorsport wiring architectures, most prominently within Mercedes-Benz, BMW, and Volkswagen Audi Group (VAG) vehicles. Universally recognized across the auto-electrical trade as a specialized wiring harness repair pigtail for safety restraint components, engine block sensors, pressure transmitters, and exhaust gas sensors (frequently cross-referenced to Mercedes-Benz OEM part number A0275458826). Highly vulnerable to physical locking arm distortion, CPA tab fatigue over extended operational lifespans, or internal channel fracture if pried open roughly with uncalibrated tools during routine powertrain or electrical system diagnostics.
Hirschmann 805-120-523 SealStar 1.2 Series 2-Way Sealed Female Sensor & Safety Module Plug Housing
Clear persistent dashboard warning faults, eliminate erratic telemetry dropouts, and reinstate maximum factory-standard environmental insulation at your vehicle's engine or chassis circuits with the genuine Hirschmann 805-120-523 2-way female sealed connector housing. Precision-molded from heat-stabilized, glass-fiber reinforced Polyamide (PA GF) to strict original equipment global engineering guidelines by Hirschmann, this SealStar 1.2 series socket carrier block is an indispensable trade piece for executing professional sensor pigtail repairs, custom motorsport loom sectioning, and clean auto-electrical overhauls. Engineered explicitly to survive punishing dynamic forces near the engine block, transmission, and chassis, it establishes a solid, zero-clearance conduction channel that safely routes critical logic data lines, signal loops, and low-voltage current paths.
The 805-120-523 carrier housing features a 2-pole matrix layout optimized around the 1.2mm MCON/MLK terminal footprint, handling fine-gauge automotive wire sizes from 0.50mm² to 0.75mm² cleanly. Its distinct factory black body layout features an integrated blue Code C mechanical keying guide to ensure perfect alignment during assembly, preventing dangerous mis-mating errors on complex multi-sensor harness junctions. Working in absolute uniformity with its internal perimeter radial seals and rear silicone single wire insulation seals, it forms an impenetrable barrier that completely locks out road spray, hot engine oil vapors, ambient grime, washdown fluid, and abrasive dirt. This authentic component allows independent auto-electrical trade specialists, diagnostic garages, and fleet maintenance teams to deliver reliable, factory-correct wiring overhauls.
Engineering Specifications and Technical Attributes:
- Manufacturer Part Number: 805-120-523 (Brand: Hirschmann / Germany Genuine Class)
- Auto-Click Core System Identifier: Our Part Number 2-AC192 (Verified Stock Allocation)
- Configuration: 2-Way Female Receptacle Housing, Single-Row Inline Layout
- Product Series Taxonomy: SealStar 1.2mm / Low Pole Sealed Interconnect Class
- Mechanical Shroud Profile: Mechanical Keying Code C / Black Shroud with Blue Accent Profile
- Centerline Pitch Matrix: Tight 4.00mm Pitch spacing
- Target Terminal Interface: Accepts standard 1.2mm width female socket contacts (e.g., TE Connectivity MCON 1.2 / MLK 1.2 series)
- Target Wire Cross-Section Capacity: Accommodates wire cross-sections from 0.50mm² up to 0.75mm²
- System Locking Feature: Pre-assembled top Connector Position Assurance (CPA) slide lock
- Environment Profile: Waterproof / Dustproof Weatherproof Shielding (IPX9K Rated / Sealed with SWS)
- Engineering Design Guidelines: Fully compliant with USCAR specification and LV-214 automotive standard standards
- Operating Temperature Envelope: Extended -40 to +150 degrees Celsius capability
- Primary Vehicle Fleet Cross-Reference: Fits Mercedes-Benz A0275458826 (Mates with 805-120-521 Male Coupling)
- Commercial Access: Tiered B2B wholesale trade volume pricing breaks apply instantly inside your basket for independent tuning garages, fleet service hubs, and trade auto-electrical stockists.
2way 1.2 Seal Star FA Connector
Connector Type: Housing for female terminals
Terminal Type:1.2 MM
Number of Ways:2
Connector Positioning Assur.: Yes
Protective Shroud Twisted: No
Operating Temperature Range:-40 °C - 150 °C
Terminal Positioning Assurance: Yes
Pitch: at 1.2 mm = 4 mm
Colour: Black/Blue
Coding: A
Tightness Classification: IPX9K
Cable Exit Angle:180 °
Sealed: Yes, with single wire seals
Guideline: USCAR specification, LV-214
Housing Material: PA GF