N6.3-53-21 Midship Tube Shaft 46 Splines fits Neapco 4.062 in Outside Diameter x 0.165 in Wall Thickness Tube
Technical Data
The N6.3-53-21 Midship Tube Shaft is engineered for heavy-duty driveline systems, offering a precise fit and long-lasting performance. Built with 46 splines and designed to fit 4.062-inch OD x .165-inch wall tubing, this shaft ensures a secure connection and smooth power transfer in demanding applications. Its high-strength steel construction guarantees durability under intense torque and load conditions, making it a trusted choice for professionals.
This shaft is designed to reduce vibration, increase drivetrain efficiency, and provide reliability that meets or exceeds OEM standards. Perfect for both replacement and custom driveline builds, it delivers peace of mind whether you’re restoring, upgrading, or fabricating.
For trucks, SUVs, industrial machinery, or agricultural equipment, the N6.3-53-21 Midship Tube Shaft ensures dependable performance and strength in the toughest environments.
Upgrade your driveline with the N6.3-53-21 Midship Tube Shaft – built for heavy-duty strength, precision, and unmatched durability in the most demanding applications.
Features and Benefits
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Heavy-Duty Steel Construction – Provides superior strength and longevity under high torque.
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46-Spline Design – Ensures precise fitment and secure power transfer.
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Precision-Machined – Reduces vibration and promotes smooth operation.
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OEM-Grade Quality – Meets or exceeds manufacturer standards.
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Versatile Applications – Suitable for trucks, SUVs, industrial, and agricultural equipment.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | N6.3-53-21 |
| Interchange Numbers | 6.3-53-21, N6.3-53-21, 250-635321, 635321, 23913212285 |
| Material | Steel |
| Warranty | 1 Year |
| Spline Count | 46 |
| Spline Diameter | 2.35 in (59.69 mm) |
| Tube Diameter & Wall Thickness | 4.062 in x .165 in (103.175 mm x 4.191 mm) |
| Butt Diameter | 3.75 in (95.25 mm) |
| Length of Shoulder | 0.812 in (20.6 mm) |
| End of Spline to Weld | 5.312 in (135 mm) |
| Length of Spline | 2.719 in (69 mm) |
Vehicle Compatibility
| Application Type | Details |
|---|---|
| Heavy-Duty Trucks | Designed for high-load driveline applications |
| SUVs & Automotive | Compatible with select Neapco and Spicer systems |
| Industrial Machinery | Built for heavy machinery and equipment requiring strength |
| Agricultural Use | Suitable for farm equipment driveline assemblies |
| Tubing Fitment | Fits 4.062" OD x .165" wall driveshaft tubes |
What's Included
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1x N6.3-53-21 Midship Tube Shaft (46 Splines)
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Manufacturer packaging
REVIEWS
Solid part, exactly as described. Fit my heavy-duty truck perfectly and runs smooth with no vibration.
David L.
Cleveland, OH
Great quality shaft. Installed on my off-road rig and it’s been holding up under some tough conditions.
Kevin R.
Boise, ID
Specifications
Fitment Data
• Engineered for precision compatibility with high-performance builds.
• Tested under extreme mechanical stress for guaranteed structural integrity.
Use the Riot Vehicle Finder to verify exact sub-model compatibility.
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