For diesel enthusiasts and heavy-duty truck owners, few combinations rival the power and durability of a Cummins engine paired with a ZF6 manual transmission. If you own a 2008–2010 Ford F250–F550 and are ready to unleash serious performance, the Cummins ZF6 Swap Kit is your answer. Designed specifically to fit CR (Common Rail) Cummins engines from 2003–2020, this Ford Cummins conversion kit makes the complex process of engine conversion smoother, more efficient, and better performing than ever.
Why Cummins + ZF6 Is the Ultimate Swap Combo
The Ford Super Duty lineup is known for its rugged build, capable chassis, and strong drivetrain. But when the factory Powerstroke engine doesn’t live up to expectations — especially in terms of longevity or performance tuning — many truck owners look toward Cummins for a solution.
Cummins engines are famed for their reliability, simplicity, and aftermarket support. When paired with the ZF6 6-speed manual transmission found in 6.0L and 6.4L Ford trucks, the result is a bulletproof powertrain that’s ideal for towing, off-road use, and high-performance upgrades.
Key Components of the ZF6 Cummins Swap Kit
This Cummins swap kit has been engineered with precision to ensure a clean installation, factory-level fitment, and maximum durability. Let’s break down the main components and why they matter.
- CR Cummins to Ford 6.0/6.4 ZF6 Transmission Adapter
At the heart of any Cummins swap is the transmission adapter. This kit includes a high-quality adapter that allows direct mating of the CR Cummins engine to Ford’s ZF6 transmission. It’s designed to maintain the proper spacing, centerline alignment, and torque handling required for heavy-duty use.
- Motor Mounts Designed for Simplicity
Unlike many generic or DIY swap kits, these custom motor mounts are built to work with Ford’s factory frame-mounted isolators. This means no hacking, welding, or moving the Cummins ECU. The mounts maintain OEM engine placement and clearance, simplifying your build and keeping serviceability intact.
- 2008–2010 Ford AC & Alternator Bracket
One of the most frustrating parts of a Cummins conversion can be the AC system. This kit includes a bracket that allows you to retain your stock Ford AC compressor and alternator without any modifications to the AC lines. That means no custom lines, fittings, or recharging — just bolt on and go.
- 6.4 Power Steering Pump Relocation Bracket
Clearance is always a concern with a Cummins engine conversion, especially around the steering box. The included bracket relocates the 6.4L Ford power steering pump to avoid interference with the steering gearbox. This gives you a cleaner install and more working room in a tight engine bay.
- Ready-to-Install Machined Flywheel
For those who want a turnkey solution, a custom-machined flywheel is available separately and recommended for optimal compatibility. It’s engineered specifically to work with the Cummins and ZF6 clutch system, ensuring smooth engagement and long-term reliability.
Benefits of This Cummins Swap Kit
- No ECU Relocation Needed
This is a standout feature. Most Cummins swaps require relocating or modifying the ECU and wiring harness. With this kit, your ECU stays put, reducing build complexity and potential points of failure.
- OEM Fitment for Components
From the AC compressor to the power steering pump, this kit is designed to use your factory Ford components. That means fewer aftermarket parts to track down and better long-term serviceability.
- Built for Daily Driving and Heavy Loads
Whether you’re towing 15,000 pounds or just want a weekend warrior, the combination of Cummins torque and ZF6 reliability is ideal for both work and play. Plus, the manual transmission adds another layer of driver control and durability.
Who Is This Swap Kit For?
- Ford truck owners are looking to replace a failed or underperforming Powerstroke engine.
- Diesel performance enthusiasts who want a manual transmission setup with better tuning options.
- Off-road and towing operators in need of a bulletproof drivetrain that handles high torque without compromise.
- DIY builders and professional shops are seeking a clean, tested solution that simplifies the Cummins conversion process.
Final Thoughts
Swapping a Cummins engine into a Ford Super Duty used to be a complicated process filled with fabrication, trial and error, and constant parts-hunting. This ZF6 Swap Kit for 2008–2010 F250–F550 trucks changes the game.
With components specifically engineered for compatibility, minimal modifications, and maximum performance, this kit gives you the power and reliability of a Cummins without the headache. If you’re planning a Ford-to-Cummins conversion, start with a kit that’s built for power and designed for success.