Precision Rebuilding Backed by Real Testing
At Turbo Kings, every HD94 PD3 Sheppard Power Steering Gearbox that enters our facility is rebuilt with the same precision, care, and hands-on validation that define our brand across the diesel and heavy-duty industry. Manufactured by Sheppard, the HD94 PD3 variant is trusted for reliable steering control and consistent performance in Peterbilt 579 and Kenworth T680 (2015–2016) applications.
We don’t simply replace parts — we restore, validate, and certify each gearbox to meet or exceed OEM performance standards. Every unit is fully disassembled, media-cleaned, and inspected for wear, corrosion, or fatigue. Seals, bearings, valves, and shafts are replaced using premium Sheppard-grade components, ensuring precise steering response and long-term dependability.
Once assembled, each gearbox is bench-tested in-house at 5 GPM and 2000 PSI, confirming hydraulic integrity, internal pressure stability, and leak-free operation before shipping.
This isn’t assumed or outsourced — it’s physically verified right here at Turbo Kings.
What Makes a Turbo Kings Rebuild Different
In-House Pressure Certification – Each Sheppard gearbox is tested on a closed-loop hydraulic bench at 2000 PSI to ensure zero internal or external leaks.
Pre-Lubricated & Ready to Install – Each unit leaves our shop filled with fresh fluid and sealed for immediate installation.
Precision Machining – All surfaces are refinished to factory tolerances for precise fitment and torque balance.
OEM-Level Components – Only Sheppard-grade seals, bearings, and shafts are used — no generic imports or shortcuts.
Hands-On Expertise – Every gearbox is rebuilt and verified by certified technicians experienced in heavy-duty steering systems.
Warranty Confidence – Backed by a 12-month, unlimited-mileage warranty, because we trust in the quality of every rebuild.
Why Fleets and Owner-Operators Trust Turbo Kings
When you choose a Turbo Kings remanufactured HD94 PD3 Sheppard gearbox, you’re not buying a refurbished core — you’re investing in verified reliability. Fleets, dealers, and independent shops rely on Turbo Kings because:
We test every gearbox under real hydraulic load conditions.
We maintain detailed core and component traceability.
We provide direct technical support — not third-party call centers.
We stand by our craftsmanship with fast turnaround and transparency.
Each gearbox that leaves our shop is a certified, serialized, and pressure-tested product ready to install.
Our Process at a Glance
Disassembly & Cleaning – Each gearbox is completely disassembled, degreased, and inspected for damage or fatigue.
Parts Replacement & Machining – All wear components are replaced, and housings are resurfaced to Sheppard OEM specifications.
Assembly & Torque Verification – Internal components are aligned, torqued, and verified for consistent movement.
Pressure Test @ 5 GPM / 2000 PSI – Each gearbox is hydraulically tested for proper function and leak-free certification.
Final Inspection & Documentation – Every unit is serialized, logged, and paired with its warranty and trace record.
Standard Features
• Fully Pressure-Tested at 2000 PSI and 5 GPM
• Pre-Lubricated and Ready to Install
• Leak-Free Guarantee
• 12-Month Unlimited-Mileage Warranty
• Fast Core Exchange Available
Applications
Compatible with:
Peterbilt 579 (2015–2016)
Kenworth T680 (2015–2016)
Other heavy-duty trucks using Sheppard HD94 steering systems
If you’re searching for a remanufactured HD94 PD3 Sheppard Power Steering Gearbox, a Peterbilt or Kenworth steering gear rebuild, or a pressure-tested heavy-duty replacement, Turbo Kings delivers tested, certified, and proven reliability every time.
Trust Turbo Kings — We Don’t Just Rebuild, We Reign.
