ZF 2095.352.021 PISTON for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2095.352.021 PISTON is a critical hydraulic actuation component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part converts hydraulic pressure into mechanical force to engage clutch packs and shift gears within the planetary gearset. Positioned inside the valve body and clutch drum assembly, the piston (SKU: 2095.352.021) ensures precise oil flow control for smooth power delivery. When paired with a properly functioning 5838109007: DIFFERENTIAL, this piston maintains consistent torque distribution across the driveline.

Symptoms of Failure

• Delayed or harsh gear engagement: A worn piston seal causes hydraulic pressure loss, leading to sluggish shifts or sudden clunking when moving from neutral to drive.
• Transmission fluid leaks around the clutch housing: Cracks or scoring on the piston surface allow ATF to bypass seals, leaving visible drips under the bell housing.
• Intermittent gear slipping under load: Insufficient clamping force from a failing piston results in clutch pack slippage, especially during uphill climbs or heavy towing.
• Erratic shift timing: A sticking piston disrupts oil gallery pressure, causing the transmission to shift too early or too late in the RPM range.

Technical Specifications

Compatibility

This piston is designed exclusively for ZF WG-series powershift transmissions used in industrial and agricultural machinery. Confirmed fitment includes WG100, WG130, and WG131 models. It also applies to WG180 and WG200 variants when used in low-torque auxiliary circuits. Always verify the piston bore diameter against your clutch drum before installation. For complete driveline restoration, inspect the 0750117075: TAPER ROLLER BEARING and the 2095209019: DIFFERENTIAL for wear patterns that could accelerate piston failure.

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