Precision Rebuilding Backed by Real Testing

At Turbo Kings, every HD94 PAH Sheppard Power Steering Gearbox is rebuilt under the same strict process controls, precision standards, and hydraulic testing that define our brand. Manufactured by Sheppard, the HD94 PAH variant delivers reliable steering performance and durability in Peterbilt 579 and Kenworth T680 (2015–2016) applications.

We don’t simply replace worn components — we restore, validate, and certify every gearbox to meet or exceed OEM performance. Each unit is completely disassembled, media-cleaned, and inspected for cracks, corrosion, or mechanical fatigue. Internal seals, bearings, and shafts are replaced with Sheppard-grade OEM-spec parts to ensure long-term reliability and consistent steering response.

After assembly, every gearbox is bench-tested in-house at 5 GPM and 2000 PSI to verify hydraulic balance, pressure stability, and leak-free performance before it leaves our facility.

This isn’t outsourced or estimated — it’s physically tested 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 bench at 2000 PSI to ensure zero internal or external leaks.
Pre-Lubricated & Ready to Install – Every unit leaves our shop filled with fresh lubricant and sealed for fast installation.
Precision Machining – All surfaces are refinished to OEM-grade tolerances for perfect alignment and torque transfer.
OEM-Level Components – Only high-spec Sheppard seals, bearings, and valves are used — never aftermarket substitutions.
Hands-On Expertise – Each gearbox is rebuilt and signed off by certified technicians experienced in heavy-duty steering systems.
Warranty Confidence – Backed by a 12-month, unlimited-mileage warranty, reflecting our confidence in every rebuild.

Why Fleets and Owner-Operators Trust Turbo Kings

When you choose a Turbo Kings remanufactured HD94 PAH Sheppard gearbox, you’re investing in verified reliability. Fleets, dealerships, and repair facilities rely on Turbo Kings because:

• Every gearbox is tested under real hydraulic load — not just paper-checked.

• We maintain complete traceability for every core and major component.

• We provide direct technical support — no outsourced call centers.

• We prioritize transparency, consistent quality, and fast turnaround.

Each gearbox we ship is a tested, serialized, and certified unit built to perform in demanding fleet conditions.

Our Process at a Glance

Disassembly & Cleaning – Gearboxes are fully torn down, degreased, and inspected for wear or fatigue.
Parts Replacement & Machining – All wear components are replaced, and housings are machined to Sheppard OEM specifications.
Assembly & Torque Verification – Internal components are aligned, torqued, and verified for precision movement.
Pressure Test @ 5 GPM / 2000 PSI – Each gearbox undergoes hydraulic load testing for leak-free validation.
Final Inspection & Documentation – Units are serialized, logged, and linked to warranty records for accountability.

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