High Quilty, Using enhanced materials, wear resistance, high temperature resistance, resistance, and long service life. The pinless design eliminates the possibility of pin leakage, and precision steel balls can additionally be used to plug the existing pin holes in the housing or cover,so as to precise sealing. Replace with a new piston kit, improve gear shifting and extend the life of the strap and clutch, providing you with long-term stable and excellent performance. Fitment: 1993-2018 4L60E: 1-2 & 3-4 Accumulator Piston (.310inch Pin Diameter) (Pinless Design) 1981-1990 TH200-4R: Only 3-4 Accumulator Piston (.310inch Pin Diameter) (Pinless Design) 2001-2018 4L70E: 1-2 & 3-4 Accumulator Piston (.310inch Pin Diameter) (Pinless Design) 2001-2018 4L65E: 1-2 & 3-4 Accumulator Piston (.310inch Pin Diameter) (Pinless Design) 1982-1993 TH700-R4: 1-2 & 3-4 Accumulator Piston (.310inch Pin Diameter) (Pinless Design) Part Number:77998-03K,62-77998-03K,342-5806,74927K,K61985,K61985L,S74927K Condition:100% New Manufacturer Part Number:77987-01K, (2) 77998-03K Interchange Part Number:S74927BK, S74927K Other Part Number:4L60E, 4L65E, 4L70E Type:Pinless Accumulator Fitment Type:Direct Replacement Colour:Silver Material:aluminum Package Contents: 3 x Piston 6 x PTFE Seal 6 x Steel balls Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.