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

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

by Sonnax
SKU S34672BHD
$319.88 - $319.88
$319.88
$319.88 - $319.88
$319.88
Availability:
in stock, ready to be shipped

Delivery time

You will receive your package in 2–5 business days within the contiguous U.S.

Non-Domestic Product: No

Custom Bundle: No

Fitment Type: Direct Replacement

Items Included: Heavy Duty 300M Input Shaft

Manufacturer Part Number: 34672-01

Vintage Part: No

Modified Item: No

Transmission Type: Automatic

Brand: Sonnax

Type: Input Shaft

Manufacturer Warranty: Unspecified Length

Surface Finish: New

Universal Fitment: Yes

Performance 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 additional strength
  • Direct replacement for OE shafts

Can be used to replace late 4L80-E solid shafts. However, check clearance between front of main shaft and rear of input shaft. It may be necessary to remove approximately .060" from front of main shaft or rear of input shaft.

  • Material: 300M

Installation recommendation: Experienced technician
Transmission removal necessary: YES
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