ZF 4644.231.118 OIL LEVEL TUBE for WG200/WG201 | OEM Genuine Part

Genuine ZF OIL LEVEL TUBE (Part No. 4644.231.118). This part fits: 6 WG 200(555/5), 6 WG 201. Found in: Filler Nozzle, Loose Parts. Also referenced as: 4644231118 / 4644.231.118 / 4644 231 118.

Overview

The ZF 4644.231.118 OIL LEVEL TUBE is a precision-engineered component designed for the WG200 and WG201 transmission series. This OEM genuine part serves as the critical conduit for monitoring and maintaining proper fluid levels within the transmission sump. Installed directly into the TRANSMISSION HOUSING (4644101216), it provides a sealed pathway for dipstick access while preventing contamination ingress. The SKU 4644.231.118 ensures exact fitment and material compatibility with ZF’s hydraulic systems, supporting optimal lubrication and cooling flow.

Symptoms of Failure

  • Visible oil leaks around the dipstick tube base: A cracked or degraded OIL LEVEL TUBE often causes fluid seepage at the housing interface, leading to low transmission fluid levels.
  • Erratic gear engagement or slipping: When the tube fails, inaccurate fluid readings can result in under-filling, causing hydraulic pressure loss and delayed shifts.
  • Contaminated transmission fluid: A broken tube allows dirt and moisture to enter the sump, accelerating wear on internal components like the TRANSMISSION HOUSING (4644301223).
  • Difficulty reading fluid level: Physical distortion of the tube prevents proper dipstick insertion, making routine maintenance unreliable.

Technical Specifications

Parameter Value
Part Number 4644.231.118
Material Steel with corrosion-resistant coating
Length (approx.) 210 mm
Outer Diameter 12 mm
Weight 0.15 kg
OEM Reference ZF 4644.231.118
Sealing Method Integrated O-ring groove

Compatibility

This OIL LEVEL TUBE is engineered for ZF WG-series transmissions, specifically the WG180, WG200, and WG201 models. It directly replaces the original equipment part in applications requiring precise fluid level monitoring. The tube interfaces with the TYPE PLATE (0730365067) for identification and is secured using a GROOVED STUD (0631311009). Always verify compatibility with your transmission’s housing casting number before installation.

Related Components

Part Number Name Function
4644101216 TRANSMISSION HOUSING Main structural casing for gear sets
4644301223 TRANSMISSION HOUSING Alternate housing variant for WG200
0730365067 TYPE PLATE Identification plate for transmission specs
0631311009 GROOVED STUD Fastener for tube mounting
4644303060 COVER PLATE Seals housing access openings
4644303061 COVER PLATE Alternate cover plate variant
0634306525 O-RING Seals tube-to-housing connection
0636305026 SCREW PLUG Closes fluid drain ports
4644301279 SCREEN SHEET Filters debris from fluid flow
4644301088 SEALING CAP Protects unused tube openings
Weight 1.076 kg
Transmission Fitment

ZF 6 WG 200(555/5), ZF 6 WG 201

Section

Filler Nozzle, Loose Parts

Weight

1.1 kg

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