Yukon GM 14-Bolt Full Float Rear Axle Shaft - 1541H, 30-Spline, 31–35" Cut-to-Length
YA GM14T-30-35
The Yukon GM 14-Bolt 30-Spline Cut-to-Length Rear Axle Shaft is built for GM 10.5" 14-Bolt full-float rear axle assemblies that need a strong replacement shaft or a custom length for a fabricated housing. Manufactured from heat-treated 1541H alloy steel, this axle shaft is a practical choice for narrowed 14-Bolt housings, custom-width axles, rock crawlers, trail buggies, and heavy-duty truck builds. The cut-to-length design lets builders match the shaft to the finished axle assembly instead of being limited to factory axle widths.
With a 30-spline differential end and a 31"–35" cut-to-length range, this Yukon shaft gives builders flexibility when setting up custom GM 14-Bolt rear axles. The 1541H alloy steel construction provides a good balance of strength, toughness, and value for trail riding, towing, and off-road use without stepping up to a 4340 chromoly shaft. The important part is getting the finished shaft length, spline engagement, and wheel-end fitment right before cutting and installing the shaft.
Includes:
- (1) Yukon GM 10.5" 14-Bolt Full Float Rear Axle Shaft
Important: Sold individually. This is a cut-to-length axle shaft that may require machining before installation. Verify the required finished shaft length, 30-spline differential compatibility, axle flange dimensions, and wheel-end configuration before ordering. This is not a universal direct-fit replacement for every factory GM 14-Bolt axle.
Specifications
| Manufacturer | Yukon Gear & Axle |
|---|---|
| Part Number | YA GM14T-30-35 |
| Product Type | Full Float Rear Axle Shaft |
| Axle Platform | GM 10.5" 14-Bolt |
| Axle Shaft Material | 1541H Alloy Steel |
| Axle Spline Count | 30-Spline |
| Axle Shaft Length | 31"–35" Cut-to-Length |
| Axle Shaft Design | Full Float / Custom Length |
| Heat Treatment | Heat-Treated Alloy Steel |
| Differential Compatibility | GM 14-Bolt 30-Spline Applications |
| Axle Position | Rear |
| Installation Type | Cut-to-Length / Axle Assembly Required |
| Primary Application | Custom GM 14-Bolt Axles, Narrowed Housings, Trail Buggies & Heavy-Duty Off-Road Builds |
| Quantity | Sold Individually |
Fitment
Designed for compatible GM 10.5" 14-Bolt full-float rear axle assemblies using 30-spline differentials. The vehicle applications below are reference platforms only. Final fitment depends on the installed axle housing, required shaft length, differential, and wheel-end configuration.
| Make | Model | Year Range | Axle Application |
|---|---|---|---|
| Chevrolet | K30 1-Ton 4x4 | 1973–1991 | GM 10.5" 14-Bolt Full Float Rear |
| Chevrolet | V30 1-Ton 4x4 | 1987–1991 | GM 10.5" 14-Bolt Full Float Rear |
| GMC | K3500 1-Ton 4x4 | 1973–1991 | GM 10.5" 14-Bolt Full Float Rear |
| GMC | V3500 1-Ton 4x4 | 1987–1991 | GM 10.5" 14-Bolt Full Float Rear |
| Custom Fabrication | Tube Chassis / Off-Road Builds | Universal | Compatible GM 10.5" 14-Bolt Full Float Rear |
Fitment Notes:
- Designed for compatible GM 10.5" 14-Bolt full-float rear axle applications
- Requires a matching 30-spline differential, locker, or spool
- Cut-to-length design for shaft requirements within the specified 31"–35" range
- Verify the required finished axle shaft length before cutting
- Confirm axle flange dimensions and bolt pattern against the existing wheel hub
- Verify housing width, differential position, spline engagement, and wheel-end configuration
- Not compatible with 35-spline, 38-spline, or 40-spline differential configurations
- Factory axle applications may use different shaft lengths and flange configurations
- Professional measurement and machining are recommended
Builder Note: For narrowed or fabricated GM 14-Bolt axle housings, establish the final shaft length after the differential, housing, and wheel ends are assembled. The shaft needs proper spline engagement without bottoming out inside the differential or placing unnecessary load on the wheel-end components.
FAQ
What is the advantage of a 1541H alloy steel axle shaft?
1541H alloy steel provides a good balance of strength, toughness, and cost for heavy-duty axle applications. It's a practical choice for replacement shafts, custom axle widths, and off-road builds that need dependable performance without the added cost of a 4340 chromoly shaft.
What does cut-to-length mean?
This axle shaft is designed to be shortened to the finished length required by the axle assembly. The 31"–35" range provides flexibility for narrowed housings and custom axle widths. The correct length must be measured and confirmed before cutting.
Will this axle shaft fit a factory GM 14-Bolt rear axle?
It may fit compatible GM 10.5" 14-Bolt full-float rear axle configurations, but fitment depends on the required shaft length, differential spline count, axle flange dimensions, and wheel-end design. It should not be treated as a direct-fit replacement for every factory GM 14-Bolt axle.
What is the difference between 1541H alloy steel and 4340 chromoly?
1541H alloy steel is commonly used for heavy-duty replacement axle shafts because it offers good strength and durability at a lower cost. 4340 chromoly is typically selected for more demanding high-horsepower and competition applications where additional toughness and fatigue resistance are priorities. The right choice depends on tire size, vehicle weight, traction, and intended use.
Can I use this axle shaft with a locker or spool?
Yes, provided the differential, locker, or spool uses compatible 30-spline axle shafts and the complete axle assembly matches the shaft dimensions. Verify spline engagement and wheel-end compatibility before installation.
Does this shaft work with a 40-spline GM 14-Bolt differential?
No. This is a 30-spline axle shaft and is not compatible with a 40-spline differential or spool. The spline count of the axle shaft must match the differential side gear or spool.
Is this axle shaft sold individually or as a pair?
This listing includes one axle shaft. Two shafts are required for a complete rear axle assembly, and each side may require a different finished length depending on the housing configuration.
What measurements should I verify before ordering?
Confirm the required finished shaft length, differential spline count, axle flange dimensions, housing width, and wheel-end configuration. For custom builds, measure the assembled axle rather than relying only on factory vehicle specifications.