Kostal 10098866 SLK Series 4-Way Female Sealed Plug | Auto-Click

4 Way Automotive Connector Housing

Terminals and seals are not included

The Component: Genuine Kostal 10098866 4-way female automotive sealed connector plug. SLK Mixed Series 4-position receptacle socket casing (Black / PBT-GF30 / Sealed / Loose Piece).

Series Taxonomy: Kostal SLK Series System. A heavy-duty, high-performance original equipment (OE) environmental interconnect platform developed by Kostal. Engineered explicitly to maintain total weatherproofing, prevent contact degradation from harsh engine harmonics, and ensure flawless logic signaling and high-current execution across critical engine cooling architectures and brushless motor platforms.

Connector Interface: 4-position (4-way) high-current composite matrix socket plug configuration layout. Features a mixed cavity footprint (2+2 layout) explicitly designed to accommodate two Kostal SLK 2.8 ELA series female socket contacts alongside two heavy-duty Kostal SLK 5.8 ELA series female socket terminals.

Locking and Sealing Security: Environmentally sealed to an IP67/IP69K high-pressure waterproof and dustproof automotive classification, engineered to operate continuously within a rigorous under-hood and chassis environment thermal window. Employs a robust pre-installed internal perimeter silicone compression seal combined with matched rear single-wire rubber insulation cavity seals (SWS) to block out ambient moisture, hot engine fluids, road splash, and oil vapor tracking completely. Features a rugged external mechanical top-thumb latch locking frame coupled with an integrated secondary terminal lock to guarantee precise contact pin retention and entirely eliminate terminal back-out under severe automotive wire harness tension.

Mating Complement: Connects inline wire-to-device or wire-to-wire by clicking directly onto its corresponding 4-pole male interface variant under Kostal part number 10098862, or coupling seamlessly with factory-installed male component device pin header shrouds.

Common Applications: Extensively specified as a factory original equipment (OE) mainstay across prominent European passenger car networks and global tuner platforms, most notably within BMW and Mercedes-Benz engine cooling infrastructure. Universally recognized across the auto-electrical trade as the definitive replacement wiring harness repair pigtail for high-efficiency, high-output electric water pump control loops. Most frequently deployed as the factory engine cooling plug for the Pierburg CWA400 brushless electronic water pump assembly across high-performance BMW N52, N54, and N55 twin-turbo inline-six platforms, as well as specialized Mercedes-Benz powertrain configurations. Highly vulnerable to exterior locking tab fracturing from age-related thermal embrittlement, side frame damage during cooling line overhauls, or contact lane throat distortion if forced aggressively with uncalibrated field service diagnostic equipment.

Kostal 10098866 SLK Series 4-Way Sealed Female Pierburg CWA400 Electric Water Pump Plug Housing

Clear persistent engine cooling malfunction codes, resolve intermittent electric water pump communication dropouts, and reinstate maximum factory-standard environmental insulation at your powertrain cooling grid with the genuine Kostal 10098866 4-way female sealed connector plug housing. Precision-manufactured to strict Tier-1 original equipment global automotive engineering parameters by Kostal, this 4-pin SLK series mixed carrier block is an indispensable trade component for executing professional cooling system modifications, motorsport wire tucks, and clean auto-electrical repair pigtail overhauls. Engineered explicitly to survive punishing dynamic forces directly near the lower radiator channels and engine block, it preserves a zero-clearance conduction channel that safely handles intensive current loads and critical LIN-bus communication telemetry loops back to the ECU.

The 10098866 carrier housing is injection-molded from a premium, heat-stabilized Polybutylene Terephthalate compound with 30% glass fiber reinforcement (PBT-GF30) finished in a factory black profile, ensuring outstanding structural impact defense, superior dimensional tracking stability under severe thermal loads, and absolute immunity to chemical degradation from hot engine oil, glycol-based coolants, and environmental road salt spray. Its composite 4-pole layout splits power and signal paths cleanly across its two SLK 2.8 and two SLK 5.8 terminal positions to prevent electrical interference across sensitive data paths. This authentic component allows independent tuning garages, fleet service hubs, and BMW repair specialists to deliver reliable, zero-resistance factory harness overhauls.

Engineering Specifications and Technical Attributes:

- Manufacturer Part Number: 10098866 (Brand: Kostal / Germany Genuine Class)

- Auto-Click Core System Identifier: Our Part Number 4-AC394 (Verified Stock Allocation)

- Configuration: 4-Way Female Receptacle Housing, Mixed Cavity Layout

- Product Series Taxonomy: SLK Series / Mixed 2.8mm & 5.8mm Sealed Micro-Power Class

- Number of Cavities/Positions: 4 Pins (2 x SLK 2.8 Lanes + 2 x SLK 5.8 Lanes)

- Environmental Rating: Waterproof / Dustproof High-Performance Environmental Shielding (IP67 / IP69K Rated)

- Connection Type Profile: Wire-to-Device / Wire-to-Wire

- Shroud Color Profile: Factory Solid Black

- Base Structural Compound: Premium High-Temperature Glass-Filled Polybutylene Terephthalate (PBT-GF30)

- System Sealing Interface: Pre-assembled Inner Silicone Perimeter Seal / Requires SWS Individual Cable Seals

- Primary Vehicle Fleet Cross-Reference: Fits BMW / Mercedes-Benz / Pierburg CWA400 Brushless Electric Water Pumps

- Associated Terminals (Not Included): Fits standard Kostal SLK 2.8 female sockets (e.g., 22124499560) and SLK 5.8 female sockets (e.g., 22124544900)

- Associated Rubber Seals (Not Included): Fits SLK 2.8 single-wire seals (e.g., 10800444522) and SLK 5.8 single-wire seals (e.g., 10800583690)

- Mating Male Counterpart Shroud: Pairs seamlessly with Kostal 4-way male inline tab housing 10098862

- 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.