SKU: ATS309-833-4440

Stage 3 Allison LCT1000 Crate Transmission

Ships From Manufacturer in 15-20 Days
Confirmed fitment below
YEARS
2017-2019
MAKE / MODEL
GM/Chevrolet/GMC / Silverado/Sierra
SERIES
2500HD/3500HD
ENGINE
6.6L Duramax L5P
Price
$7,331.95
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PRODUCT DETAIL

Key Features & Description

Features:

  • Complete Stage 3 transmission package
  • Includes ATS Five Star torque converter
  • Deep pan increases fluid capacity
  • Features ATS Co-Pilot controller
  • Billet input shaft for added strength
  • Designed for 2WD trucks with PTO
  • Handles more torque and heavy loads
  • Engineered for 6.6L L5P Duramax engines
  • Improves durability and drivability
  • $500 shipping surcharge applies at checkout

Transmission Reliability That Matches Your L5P’s Potential

When your Duramax-powered 2WD workhorse starts pushing more torque or spending its life under load, stock transmission components often can’t keep up. The ATS 309-833-4440 Stage 3 Allison LCT1000 Crate Transmission is built to meet the real-world demands of towing, hauling, or tuned performance. Designed specifically for PTO-equipped, 2WD applications, this package gives your L5P Duramax the reinforcement it needs to deliver power without hesitation. It comes complete with a performance-built Allison transmission, ATS’s Five Star torque converter for smoother torque transfer, and a deep transmission pan to improve fluid capacity and cooling. Whether you’re on the road daily with a loaded trailer or simply looking to upgrade your drivetrain for peace of mind, this package delivers the durability and performance your truck deserves.

Complete Drivetrain Solution with Enhanced Control

What really makes this package stand out is the added control and protection built into every component. ATS includes their Co-Pilot Transmission Controller, giving you improved shift quality and torque converter management to handle increased load without sacrificing drivability. The billet input shaft strengthens one of the most common failure points, making this package ideal for trucks that live in high-stress environments. ATS takes the guesswork out of ordering by including everything you need to install a fully upgraded system, with a flat $500 shipping fee covering round-trip freight and core return. If you’re serious about protecting your truck’s drivetrain and getting the most out of your L5P’s potential, this Stage 3 Allison package is ready to perform.

Fits: 2017, 2018, 2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P PTO 2WD

FITMENT GUIDE

Exact Fitment — Verify Your Year

Year RangesYears
Make
Model
Series
Engine
2017-2019
GM/Chevrolet/GMC
Silverado/Sierra
2500HD/3500HD
6.6L Duramax L5P

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