Sonnax Heavy Duty Output Shaft 2WD/Corvette 4L60E – 74678L-HD

Description Heavy Duty Output Shaft Part No. 74678L-HD Fits 2WD and Corvette applications only. Output shaft failure is common as power levels are increased in GM 4L60-E, 4L65-E and 4L70-E units. Sonnax heavy duty output shaft 74678L-HD for 2WD and Corvette units is precision engineered and manufactured for unbeatable performance in high-horsepower street and strip builds. The shaft features many unique refinements available only from Sonnax, including a torsional design that allows energy to be absorbed, reducing peak loads to critical areas. High-strength 300M steel shaft with rolled splines Specially heat-treated and processed for maximum toughness Torsional design absorbs energy, reducing peak loads to critical areas