Overview
The ZF 4108.121.017 FILTER is a critical component engineered for the hydraulic lubrication and cooling circuits of ZF WG-series powershift transmissions. Positioned within the transmission sump or external filtration loop, this OEM genuine part captures particulate contaminants and wear debris before they can circulate through valve bodies, clutches, and torque converters. The SKU 4108.121.017 directly replaces the factory-installed element to maintain precise oil flow and pressure regulation. When paired with a clean 4108101068 HOUSING, the assembly ensures that only filtered oil reaches sensitive internal surfaces, extending transmission service intervals significantly.
Symptoms of Failure
- Erratic gear engagement or slipping under load: A clogged 4108.121.017 filter restricts hydraulic flow, causing delayed clutch pack application and torque converter shudder during acceleration.
- Persistent transmission overheating: When the filter media becomes saturated, oil bypasses the element, allowing unfiltered fluid to circulate and degrade thermal dissipation efficiency.
- Whining or groaning pump noise: Starvation caused by a blocked filter forces the hydraulic pump to cavitate, producing audible high-pitched sounds that worsen as the transmission warms up.
- Visible metallic debris in the oil pan: A failed filter element allows wear particles to accumulate in the sump, often discovered during routine oil changes or when inspecting the 4108201177 HOUSING.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4108.121.017 |
| Filtration Micron Rating | 25 µm nominal |
| Outer Diameter | 95 mm |
| Inner Diameter | 32 mm |
| Height | 145 mm |
| Media Material | Resin-impregnated cellulose with wire mesh support |
| Bypass Valve Setting | 1.5 bar (22 psi) |
| Dry Weight | 0.35 kg |
| OEM Reference | ZF 4108.121.017 |
Compatibility
This filter is engineered for the ZF WG100, WG130, and WG131 powershift transmission families. These models are commonly found in agricultural tractors, wheel loaders, and industrial forklifts. While the 4108.121.017 is not directly listed for WG180 or WG200 units, those larger transmissions use a different filter housing and require a separate element. Always verify the housing bore dimensions against your existing 0636302056 SCREW PLUG and 4108301304 BEARING COVER to confirm fitment before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101068 | HOUSING | Encloses and seals the filter element |
| 4108201177 | HOUSING | Secondary filter housing for return line |
| 0636302056 | SCREW PLUG | Seals filter housing drain port |
| 4108301304 | BEARING COVER | Protects output shaft bearing from contamination |
| 4108306173 | GASKET | Provides leak-proof seal between housing and cover |
| 0750110040 | SHAFT SEAL | Prevents oil leakage at rotating shaft interface |
| 0636302013 | SCREW PLUG | Magnetic drain plug for debris collection |
| 0501309567 | THERMOMETER | Monitors transmission oil temperature |
| 4108338020 | ADAPTER | Converts filter housing to different port sizes |
| 4108111050 | POWER TAKE-OFF | Transfers engine power to auxiliary equipment |
ZF 4108.121.017 FILTER – Filter RFQ Support
ZF 4108.121.017 FILTER can be reviewed for maintenance and service RFQs through PartsZF. Share the filter number, machine context, and quantity to speed up quotation handling.
Part-Number Summary
Use ZF number 4108.121.017 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: FILTER
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 4108.121.017 |
|---|---|
| Normalized SKU | 4108121017 |
| Part name | FILTER |
| Product category | filter |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
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