77998-03K Transmission Kit, 1-2 or 3-4 Accumulator Piston (.310" Pin
1: According to the original factory specifications,perfect match for the original car.
2: Own different test machines to design exact accurate parameter for our products.All switches were tested for performance.
3: Made by high quality material, lightweight, anti-rust, colorfast and durable.
4: Aftermarket product with premium quality.
5: Stable performance, high reliability,suitable for replacing your broken one.
Condition: 100% Brand New
Color: show as picture
Product:200-4R, 4L60, 4L60-E, 4L65-E, 4L70-E Pinless Accumulator Piston Kit
Fitment Type: Direct Replacement
Manufacturer Part Number:77998-03K
Package Size: 15*10*5cm
(Please allow 1-3 mm measuring deviation due to manual measurement.)
In 200-4R applications, this kit can only be used in the 3-4 accumulator location.
In listed GM units it is common to have poor shift quality, burnt bands or clutches due to accumulator piston wear. Repeated reciprocation of the accumulator piston causes wear at the piston pin bore interface. After this wear reaches a critical point, fluid loss through the piston pin bore cannot be compensated due to lack of pump volume. In addition, the piston can get cocked and gall the accumulator bore due to the pin bore wear or the spring bottoming out. To prevent these conditions in the 1-2 or 3-4 accumulator bores, Sonnax offers pinless accumulator piston kit 77998-03K.
*Pinless design eliminates the possibility of pin bore leakage and the additional length stabilizes the piston to prevent piston cocking
*Dual seals stabilize and completely seal the bore and provide a tight seal even after thousands of cycles
Steel balls plug existing pin bore in case or cover.
Pinless Accumulator Piston Aluminum
Steel Ball .312" dia.
Steel Ball .236" dia.
Free Quick Shipping to USA & AUS.
Estimated Time of Arrival: within 3-8 working days.