Yukon Gear 1541H Alloy 30 Spline Axle Shaft for 10.5in 14 Bolt GM Truck
Snapped a rear shaft in a Chevy or GMC 3/4-ton or 1-ton with the 10.5 inch 14-bolt full-float axle, or building a 14-bolt into another truck where a stock-length shaft will not fit? Yukon Gear & Axle part YA GM14T-30-35 is a 30-spline replacement shaft made from 1541H alloy and supplied as a cut-to-length design that covers applications from 31 to 35 inches. One part number handles a range of housing widths instead of one fixed length.
The 10.5 inch 14-bolt is a full-float axle. Each rear hub rides on its own pair of tapered bearings on a spindle at the end of the axle tube, so the hub and spindle carry the weight of the truck and the load in the bed. The shaft is left with one job: transmitting torque. Its splined inner end engages the side gear in the carrier, and its flange bolts to the outside of the hub. Because nothing but torque passes through it, a 14-bolt shaft fails by twisting or breaking near the splines rather than by bending, and it can be pulled out with the wheel still on the ground. Yukon uses 1541H alloy with induction heat treating for its stronger-than-stock replacement shafts.
Remove the flange bolts and slide the shaft out of the tube. Roll it on a flat bench to spot a twist and look closely at the splines. Then measure: Yukon measures full-float shafts from the end of the splines to the front face of the mounting flange. That number has to fall between 31 and 35 inches for this part. If the splines have failed, look at the side gears and the locker or spider gears before you button it up. Our 14-bolt rear axle problems guide lists what else wears on these axles.
Yukon lists this shaft for the GM 10.5 inch 14-bolt truck axle with 30-spline side gears, and it publishes no vehicle-by-vehicle fitment table for it because the final length depends on your measurement. Cutting a cut-to-length shaft down to size is machine shop work, so have the final length, the flange stud pattern of your hubs and the spline count confirmed with an axle or driveline shop before you buy. If your measured length runs longer, Yukon's 38.2-42.2 in. 4340 cut-to-fit shaft covers that range. Builders running big tires or a locker may want the 4340 chromoly 30-spline 14-bolt axle instead. Many 2001-and-later HD pickups use the AAM 11.5 rather than a 14-bolt, and our 14-bolt vs AAM 11.5 guide shows how to tell. Send us the year, VIN and your measurement if you want a second check.
A shaft that broke under an open differential often breaks again once traction improves. If you are adding traction, the Grizzly Locker for 30-spline 14-bolt axles and the Detroit Locker for the 10.5 in. 30-spline both bolt into this axle. Our chromoly vs stock axle guide explains when to step up from alloy to 4340.
| Brand | Yukon Gear & Axle |
| Part number | YA GM14T-30-35 |
| Fits | Yukon Gear 1541H Alloy 30 Spline Axle Shaft for 10.5in 14 Bolt GM Truck |
| Type | Axles |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is a cut-to-length shaft covering 31 to 35 inch applications, not a fixed length for one truck. Measure your old shaft from spline end to the front of the flange and have a shop finish it to that length.
Yukon measures full-float shafts from the end of the splines to the front surface of the mounting flange.
Both are stronger than stock. Yukon offers 1541H alloy as its replacement-grade upgrade and 4340 chromoly as its heavier-duty option for lockers, big tires and hard use.
This part is listed for the GM 10.5 inch 14-bolt truck axle. Confirm which rear end you have before ordering, or send us your VIN.
No. On a full-float axle the shaft unbolts from the hub face and slides out with the wheel still on the truck.
Use 75W-90 gear oil, or 75W-140 if you tow heavy, and top it off to the fill plug after the shaft is in.
