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4L60-E, 4L65-E, 4L70-E

Heavy Duty Output Shaft

Part No.

74678S-HD

OE Part No: 24230983

Heavy Duty Output Shaft
  • Heavy Duty Output Shaft

Small_74678s-hd

4L60-E, 4L65-E, 4L70-E

Heavy Duty Output Shaft

Part No. 74678S-HD

OE Part No: 24230983

Fits 4WD/AWD 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 74678S-HD for 4WD/AWD 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