3-40-1491 Splined Tube Shaft 1.5" Diameter x 16 Splines fits 3.5" Diameter x .083" Wall thickness Tube
Technical Data
The 3-40-1491 Splined Tube Shaft is a heavy-duty driveline component designed for efficient torque transfer and long-lasting performance. Built with a 1.5-inch spline diameter and 16 splines, it delivers a secure and precise connection for agricultural, industrial, and automotive applications. Designed to fit a 3.5-inch diameter tube with a .083-inch wall thickness, this shaft ensures easy integration into existing driveline assemblies. Manufactured from high-strength steel with a corrosion-resistant finish, it provides excellent durability for demanding conditions.
Upgrade your driveline with the 3-40-1491 Splined Tube Shaft—engineered for strength, precision, and reliability in PTO, agricultural, and automotive systems.
Features and Benefits
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1.5" spline diameter with 16 splines for accurate fit and secure power transfer
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High-strength steel construction ensures durability under heavy loads
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Precision-machined splines reduce wear and enable smooth torque delivery
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Corrosion-resistant coating enhances long-term performance
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Compatible with 3.5" diameter x .083" wall tubes for versatile applications
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Ideal for agricultural, industrial, and automotive driveline repairs or custom builds
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 3-40-1491 |
| Interchange Part Numbers | 135N-40-1491, 3401491, N3-40-1491, P3-40-1491 |
| Brand | Aftermarket |
| Part Type | Stub Shaft Spline |
| Spline Diameter | 1.5 in (38.1 mm) |
| Number of Splines | 16 |
| Tubing Diameter & Thickness | 3.5 in x .083 in (88.9 mm x 2.108 mm) |
| Length of Spline (L) | 3 in (76.2 mm) |
| End of Spline to Weld (K) | 7.531 in (191.287 mm) |
| End of Spline to Radius (R) | 6.594 in (167.488 mm) |
| Butt Diameter (B) | 3.345 in (85 mm) |
| Warranty | 1 Year |
What's Included
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1 × Splined Tube Shaft (3-40-1491)
REVIEWS
Excellent quality shaft—fit perfectly into my PTO driveline. Smooth power transfer and very durable.
Tom B.
Fresno, CA
Heavy-duty and well-machined. Works perfectly on my agricultural equipment. Highly recommended replacement part.
George H.
Omaha, NE
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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