29561880 Piston, Clutch, C3 Allison spare parts

29561880 Piston, Clutch, C3 Allison spare parts

The Allison 29561880 C3 clutch piston is precisely matched to Allison 1000/2000/3000/4000 series heavy-duty automatic transmissions, compatible with heavy-duty commercial vehicles, mining wide-body trucks, engineering dump trucks, and long-haul tractors from brands such as Mercedes-Benz, DAF, Peterbilt, and Volvo equipped with Allison transmissions. As the core hydraulic actuator of the C3 gear clutch, it directly interacts with the C3 clutch friction plates, pressure plate, hydraulic circuit, and TCM control unit. During C3 gear shifting, it quickly responds to hydraulic commands, pushing the friction plates to engage and achieve power engagement. Upon disengagement, it smoothly returns to its original position, avoiding jerking, ensuring smooth power transmission and shock-free shifting in C3 gears. It is especially suitable for demanding operating conditions involving heavy loads, frequent shifting, and high loads. With original factory design dimensions and zero deviation from the sealing groove, it is the preferred original factory replacement part for C3 gear transmission repair and fault replacement.

Core technical parameters

–Model: 29561880
– Product Name: Piston, Clutch, C3
– Operating temperature: -40°C to +150°C (short-term peak 160°C)
– Product weight: 0.62 kg
– Product Type: Original factory-grade precision-machined C3 clutch piston, single-piece assembly; adopts an integrated structure, including piston body, sealing groove, guide surface, hydraulic oil chamber interface, and locating pin hole, eliminating the need to disassemble the entire C3 clutch assembly, and can be replaced separately during clutch kit maintenance.
– Compatible Systems: Allison 1000/2000/3000/4000 series heavy-duty automatic transmissions; compatible with C3 gear clutch systems for heavy-duty commercial vehicles, mining trucks, engineering vehicles, and municipal vehicles. It can precisely link with Allison original C3 clutch friction plates, steel plates, seals, hydraulic valve groups, and TCM control units to achieve smooth C3 gear shifting.
– Suitable operating conditions: long-distance heavy-load high-speed driving, high and low gear switching in mountainous areas, high-load operation in mining areas, and high-frequency gear shifting on urban expressways; can work stably in harsh environments such as high temperature (transmission oil temperature 120°C), low temperature (-40°C), high hydraulic pressure, and high-frequency reciprocating motion.

Product Advantages

1. Original factory precision fit, saving repair time: 100% matching Allison 29561880 original factory specifications, with zero error in size, sealing groove and positioning hole; can be replaced individually without disassembling the transmission assembly, greatly reducing repair time and cost, and the compatibility is far superior to aftermarket universal parts, avoiding hydraulic leakage and C3 gear failure caused by compatibility deviation.
2. High-strength material, reliable sealing: 6061-T6 aluminum alloy forging + anodizing treatment, high compressive strength and light weight; precision machined sealing groove and high-quality sealing ring, hydraulic leakage rate is close to zero, can withstand high pressure hydraulic impact for a long time, and the service life is more than 1.8 times that of ordinary pistons.
3. Precise action and smooth shifting: The guide surface is precision machined, the piston reciprocating motion is without deviation or jamming, the response to hydraulic commands is rapid, and the engagement and disengagement of C3 gear is smooth and without jerking; effectively avoids uneven wear of friction plates and gear slippage, improves the power transmission efficiency of C3 gear, and reduces transmission oil consumption and component wear.

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