ZF Hurth HBW50/USD Input Shaft - Marine Transmission Component
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Input Shaft for ZF Hurth HBW50/USD Marine Transmissions
This precision-machined input shaft is engineered for ZF Hurth HBW50 and USD series marine transmissions, providing the critical connection between the engine flywheel and transmission internal components. Essential for transmission rebuilds and input shaft replacement.
Key Features:
- Precision-machined input shaft for ZF Hurth HBW50/USD transmissions
- OEM-quality construction ensures proper fit and durability
- Hardened steel construction for strength and wear resistance
- Precision-ground splines and bearing surfaces
- Critical component for power transfer from engine to transmission
- Manufactured to exact ZF specifications and tolerances
- Essential for transmission rebuilds and input shaft service
Function & Importance:
The input shaft is a critical transmission component that connects to the engine flywheel (via the coupling or damper plate) and transfers engine torque into the transmission. It must be precisely machined to ensure proper bearing fit, spline engagement, and alignment. A worn or damaged input shaft can cause noise, vibration, bearing failure, and transmission damage.
Compatible Models:
- ZF Hurth HBW50 Marine Transmission
- ZF Hurth USD Series Marine Transmissions
When to Replace:
Input shaft replacement is necessary when experiencing worn splines, damaged bearing surfaces, bent shaft, or during complete transmission rebuilds. Inspect input shaft carefully during any transmission service for wear, scoring, or damage. Always replace if any defects are found to prevent future transmission failure.
Installation:
Professional installation required. Input shaft replacement requires complete transmission disassembly. Follow ZF rebuild procedures for proper bearing installation, clearance checks, and torque specifications. Ensure all mating components are inspected and replaced as needed.
Technical Specifications:
- Type: Input shaft
- Compatible Models: ZF Hurth HBW50, USD series
- Part Number: 326900
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.