Sonnax Performance 4L80E 4L85E TH400 Main Shaft 300M Heavy Duty up to 1000HP

Non-Domestic Product: NoCustom Bundle: NoFitment Type: Direct ReplacementItems Included: Heavy Duty 300M Input ShaftManufacturer Part Number: 34672-01Vintage Part: NoModified Item: NoTransmission Type: AutomaticBrand: SonnaxType: Input ShaftManufacturer Warranty: Unspecified LengthSurface Finish: NewUniversal Fitment: YesPerformance Part: Yes Sonnax Performance Main Shaft 300M 34672-01 Fits 1991-On 4L80E & 4L85E Models Main shaft failure is a common problem in performance and heavy duty GM TH400, 4L80-E and 4L85-E units. Sonnax heavy duty main shaft 34672-01 is manufactured from high strength 300M with proprietary heat treatment and post heat treat processing for exceptional performance, durability and value. This shaft is recommended for applications up to 1,000HP. For extreme horsepower applications, see Sonnax extreme duty main shaft 34672-05 — the most durable 1” main shaft available. Advanced torsional design with spline and cross hole refinements for a