This component is the Piston assembly for the pneumatic gear shift control cylinder, specifically the larger piston responsible for the overdrive (splitter) or range change function within the Scania heavy-duty gearbox. This piston converts air pressure from the solenoid valve block into mechanical movement to engage the high/low gear range. It is a critical wear item for maintaining smooth and reliable gear splitting. This piston (OE 2175257 / 1533728) is compatible with a wide array of Scania P, G, R, and T series trucks, including the P380, utilizing the highly common GRS/GRSO transmissions.

📌 OE Reference Number: 2175257, 1533728

📌 Suitable Vehicle Model: Scania P, G, R, T-Series (Focusing on 4-Series, 5-Series, and onwards, e.g., P380) equipped with GRS(O)905, GR(S)895, GR(S)925, GR875 transmissions.

📌 Fitting Position: Gearbox (Transmission), Gear Shift Cylinder (Internal component)

📌 Category: Gearbox Components / Pneumatic Piston

✅ Key Features:

• Splitter Actuator: The main mechanical component inside the pneumatic cylinder that executes the high/low gear split.
• "BIG" Piston: Refers to the main shift control piston, typically the larger of the pistons used in the shifting mechanism.
• Wide Compatibility: Fits numerous generations of the widely used Scania GRS/GRSO gearboxes.
• OE Equivalent Quality: Manufactured for precise fitment and sealing within the cylinder bore to prevent air pressure loss.