Skip to main content
O Trucking
Truck Transmission

PACCAR TX-18 PRO (heavy-haul AMT)

AMT • 18-speed • PACCAR

Production 2023–present Class 8 (heavy haul) 2050 lb-ft
In production
Type
AMT
Gears
18
Torque capacity
2050 lb-ft
Production
2023–present

About the PACCAR TX-18 PRO (heavy-haul AMT)

The PACCAR TX-18 PRO is PACCAR's heavy-haul AMT — 18 forward gears, 2,050 lb-ft torque capacity. Launched 2023 as PACCAR's first heavy-haul-specific AMT (the TX-12 covers regional/highway use). Designed for Kenworth W990, Peterbilt 389, and severe-duty vocational applications where the TX-12's 12 ratios aren't enough. Direct competitor to Eaton Fuller 18-speed manual + Eaton Endurant XD Pro AMT.

Overview

The PACCAR TX-18 PRO is PACCAR's heavy-haul AMT — 18 forward gears, 2,050 lb-ft torque capacity. Launched 2023 as PACCAR's first heavy-haul-specific AMT (the TX-12 covers regional/highway use). Designed for Kenworth W990, Peterbilt 389, and severe-duty vocational applications where the TX-12's 12 ratios aren't enough. Direct competitor to Eaton Fuller 18-speed manual + Eaton Endurant XD Pro AMT.

Specifications
Manufacturer
PACCAR
Type
AMT
Gear count
18
Torque capacity
2050 lb-ft
Truck classes
Class 8 (heavy haul)
Applications
Heavy haul, oilfield, severe-duty vocational
Production years
2023–present
Design and engineering

18-speed AMT with PACCAR electronic control. Integrated clutch. Optimized for heavy-haul start and grade-descent control.

Generations and updates
TX-18 PRO
2023–present
Launch as heavy-haul AMT.
Reliability and longevity

Too new for real-world data. PACCAR TX-12 (2018-present) has built solid reliability; TX-18 PRO inherits the platform architecture.

Common problems

Brand-new — unknown.

Driver experience

Heavy-haul drivers used to Eaton 18-speed manuals appreciate the automation.

Pros and cons

✓ Pros

  • • PACCAR-integrated AMT for heavy-haul
  • • 18 forward gears
  • • Kenworth + Peterbilt dealer support

⚠ Cons

  • • Brand-new — unproven
  • • Limited tech training initially
Trucks using this transmission
Engines paired with this transmission

Related

Frequently Asked Questions

What is the PACCAR TX-18 PRO (heavy-haul AMT)?
The PACCAR TX-18 PRO is PACCAR's heavy-haul AMT — 18 forward gears, 2,050 lb-ft torque capacity. Launched 2023 as PACCAR's first heavy-haul-specific AMT (the TX-12 covers regional/highway use). Designed for Kenworth W990, Peterbilt 389, and severe-duty vocational applications where the TX-12's 12 ratios aren't enough. Direct competitor to Eaton Fuller 18-speed manual + Eaton Endurant XD Pro AMT.
What trucks use the PACCAR TX-18 PRO (heavy-haul AMT)?
The PACCAR TX-18 PRO (heavy-haul AMT) is used in 4 truck models including Kenworth T880, Kenworth W990, Peterbilt 389, Peterbilt 567. It's typically paired with Heavy haul, oilfield, severe-duty vocational applications.
Is the PACCAR TX-18 PRO (heavy-haul AMT) reliable?
Too new for real-world data. PACCAR TX-12 (2018-present) has built solid reliability; TX-18 PRO inherits the platform architecture.
What's the difference between an AMT and a manual transmission?
Automated Manual Transmission (AMT) uses the same gearset as a manual but adds computer-controlled clutch and shifter — no clutch pedal, no manual shifting. Modern AMTs like Eaton Endurant, Detroit DT12, and Volvo I-Shift offer smooth shift quality and predictive shifting via GPS. Manual transmissions (Eaton Fuller 10/13/18-speed) require driver-controlled clutch and shifting — more driver effort but maximum control and proven reliability. Automatic transmissions (Allison) use a torque converter and clutch packs — smoothest operation but heavier and less fuel-efficient than AMTs for highway use.
How long does a PACCAR TX-18 PRO (heavy-haul AMT) last?
Commercial truck transmissions typically last 500,000 to 1,500,000 miles depending on maintenance, application, and driver skill. Manual transmissions (Eaton Fuller) routinely cross 1.5M+ miles. AMTs (Endurant, DT12, I-Shift) typically last 700K-1.2M miles before major service. Automatics (Allison) often outlast the truck itself in vocational applications. Maintenance discipline matters most — clean fluid + filter at recommended intervals extends life dramatically.
Does the PACCAR TX-18 PRO (heavy-haul AMT) affect truck resale value?
Transmission choice significantly affects truck resale. Cummins-paired AMTs (Endurant) and manual 18-speed Eaton Fullers command premium resale in owner-operator markets. Allison transmissions hold premium in vocational markets.

Operating PACCAR TX-18 PRO (heavy-haul AMT)-equipped trucks? Talk to us.

Ready to Grow Your Trucking Business?

Dispatch support for your trucking business. Explore our current service options.