TCI Automotive 373401 Billet 13-Vane Rotor Pump Upgrade for GM Electronic 4Speed

Billet 13-Vane Rotor Pump Upgrade for GM Electronic Four Speeds This Billet 13-Vane Rotor Pump Upgrade Kit can be used as a direct replacement on stock or performance-upgraded GM 200R4, 700R4, 4L60, 4L60E, 4L65E, and 4L70E transmissions. Factory 10- and 13-vane pumps can experience line pressure fluctuations at higher RPM. The robust 13-vane billet rotor adds strength while increasing pump fluid volume to maintain consistent, stable pressure. The hardened pump vane rings add an additional level of durability.