10L80 (Gen. 1), 10L90 (Gen. 1), 10R60, 10R80

10L80 (Gen. 1), 10L90 (Gen. 1), 10R60, 10R80 TCC Regulator Valve SpringPart No. 105740-29 Package Quantity: 5 The OE valve spring is subject to breakage or fatigue failure and can prevent proper release of the converter clutch. Correcting these concerns would normally require replacing the valve body. Installing Sonnax TCC regulator valve spring 105740-29 restores proper control of the valve. Replacement spring maintains OE functions and pressures Manufactured from upgraded material to increase spring strength and resiliency