Yukon Gear 1541H Alloy Rear Axle For 8.2in and 8.5in GM Passenger
Need a rear axle for an older GM rear-drive car with a 10-bolt, either the 8.2 inch or the 8.5 inch passenger car rear? This is the short shaft in Yukon's passenger car line. YA G1255803-SH is a new 1541H alloy axle with 28 splines, a 29-1/2 inch overall length and a 2.780 inch brake pilot. Owners usually come looking for it after a shaft snaps on launch, the bearing journal gets chewed by a failed wheel bearing, or a rebuilt rear needs a correct-length shaft that is stronger than a junkyard piece.
Both rears are C-clip designs. A clip on the inner tip of each shaft locks it to the side gear in the carrier, and the pinion cross shaft keeps the shafts from sliding in far enough to release the clips. At the outer end the shaft is supported by a roller bearing in the axle tube, so the shaft surface is the inner race of that bearing. It drives the wheel, centers the brake drum or rotor on its 2.780 inch pilot and carries the car's weight. Length sets where the flange sits relative to the housing, which is why the same 28-spline design comes in several lengths and the right one depends on your housing.
Start with our 10-bolt vs 12-bolt identification guide, because the 8.2 and 8.5 share 28-spline car shafts but very little else, and a 7.5 or a 12-bolt will not take this part. Pull the cover, remove the cross shaft and the C-clip, and slide the old shaft out. Measure it from the inner tip to the outer face of the flange, count the splines and check the drum or rotor center bore against the 2.780 inch pilot. A shaft that measures 29-1/2 inches is the match for this part number.
Yukon lists YA G1255803-SH for GM 8.2 and 8.5 inch passenger car rear ends: 28 spline, 29-1/2 inches long, 2.780 inch brake pilot. GM used these rears under many car lines and body styles, and lengths differ between them, so measure rather than order by model name. If your shaft measures 31-3/8 inches, you need the longer Yukon YA G1255804-SH instead. A Buick, Oldsmobile or Pontiac with the BOP version of the 8.2 has its own shaft, the Yukon 8.2 BOP axle. For a stock rebuild on a budget, the USA Standard 29-1/2 inch shaft shares these dimensions. Send us your year, model and measurements if anything is unclear.
| Brand | Yukon Gear & Axle |
| Part number | YA G1255803-SH |
| Fits | Yukon Gear 1541H Alloy Rear Axle For 8.2in and 8.5in GM Passenger |
| 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.
Length. Both are 28 spline with a 2.780 inch brake pilot for GM 8.2 and 8.5 passenger cars. G1255803-SH is 29-1/2 inches long and G1255804-SH is 31-3/8 inches. Measure your old shaft to choose.
With the shaft out, measure from the inner splined tip to the outer face of the wheel flange, and count the splines.
Not as a sure thing. Yukon sells a separate shaft for the BOP 8.2, YA G8.2BOP-L. Confirm which 8.2 you have before ordering.
It is a 28-spline C-clip shaft, so the carrier must be a 28-spline unit for the GM 8.2 or 8.5 car rear that uses C-clips.
75W-90 gear oil to the bottom of the fill hole, with limited slip friction modifier if the carrier is a clutch-type posi.
