Upgrade your OEM Vehicle with our StockMonster 4L65E transmission—a beastly 4-speed automatic built for those who demand strength and reliability. Packed with upgraded internals, this transmission easily outperforms the 4L60E, handling more horsepower and torque for your high-performance ride or heavy-duty truck. With premium components like a tow-and-go shift kit, upgraded pump, and heavy-duty torque converter, you’re getting a transmission designed for durability and smooth, responsive shifting. Whether for daily driving or towing, the 4L65E delivers the ultimate in power and performance.
NOTE
- *For Stock/OEM replacement only. If your vehicle has any aftermarket upgrades—such as a lift, larger tires, upgraded exhaust, throttle body, tune, or other performance enhancements—contact us or explore our StreetMonster and Up series for the perfect fit.