Schwalbe Stretch Big Block Hauler – Cummins X15, 600HP, 140K Miles

This is the holy grail of hauler trucks – a fully custom Schwalbe Stretch conversion fitted with the massive Cummins X15 diesel, tuned to 600 horsepower and nearly 2,000 lb-ft of torque. With only 140,000 original highway miles, this big-block build is as close to new as it gets, combining unmatched pulling power, luxury, and reliability.

Key Features:

• Engine: Cummins X15 – 600 HP / ~2,000 lb-ft torque
• Transmission: Fully automatic 10-speed
• Mileage: 140K verified original highway miles
• Fuel Capacity: 150+ gallon tanks – long-haul ready
• Exterior: Clean white paint with heavy-duty cattle guard
• Interior:
  • Black leather in stunning condition
  • Two rows of captain’s chairs plus third-row bench folding into a bed
  • Woodgrain finishes throughout
• Ride & Safety:
  • Air brakes, air suspension, air cab, air seats
  • Exceptional ride quality with full air systems
• Hauler Setup:
  • Equipped for air ride gooseneck towing
  • Option to install air ride fifth-wheel hitch for $1,500
• Condition: Excellent tires, needs nothing, meticulously maintained
• Compliance: Fully California emissions compliant

Why This Truck?

Most Schwalbe haulers come with smaller Cummins engines (8.3L or 10.8L), but this rare X15 big block setup takes performance to the next level. With its tuned powertrain, massive torque, and million-mile durability, it can pull horse trailers, RVs, or race haulers through mountains with absolute ease.

The stretch build provides three rows of seating for ultimate comfort, while the interior shows virtually no wear. Combined with over 150 gallons of fuel capacity, you can haul for days without needing to stop. This is a serious upgrade for any M2-106 or standard Schwalbe owner who wants more power and capacity.

The Bottom Line

Big block Schwalbe Stretch trucks are nearly impossible to find – especially in this condition and with this drivetrain. New builds of this caliber exceed $330,000 and require long wait times, but this truck is available now, fully loaded, and road ready.

👉 Don’t miss this rare opportunity to own a Big Motor Schwalbe Stretch X15 hauler – one of the most powerful, luxurious, and capable haulers on the market today.