Yukon Gear 1541H Alloy Rear Axle For 03+ 8.8in Ford Crown Victoria w/ Abs

A 2003 to 2006 Crown Victoria, Grand Marquis or Town Car with a howling rear wheel bearing, a seal that keeps soaking the rear brake in gear oil, or an ABS light from a damaged tone ring needs a rear axle shaft, and on these cars the spline count decides which one. Yukon Gear and Axle YA F880038 is the 28 spline version of Yukon's 1541H alloy shaft for the Ford 8.8 inch rear in the redesigned 2003-up Panther cars. Yukon specifies it at 34-3/8 inches long, 5 lug, with the ABS tone ring included.

What the rear axle shaft does in a 2003-up Panther 8.8

Ford redesigned the Crown Victoria, Grand Marquis and Town Car chassis for 2003, and the 8.8 inch axle under it uses semi-floating, C-clip shafts. Each shaft splines into a differential side gear and is held in by a C-clip that the pinion cross shaft traps in place. Out at the wheel end the bearing rollers run directly on a hardened section of the shaft, so the shaft is both the drive link and the inner race of the wheel bearing. The pressed-on tone ring feeds the rear wheel speed sensor that the ABS and traction control use. When a bearing is run until it grinds, it cuts into that journal, which is why a high-mileage fleet car often needs a shaft rather than just a bearing.

Symptoms that point to the axle shaft

• A rumble from one rear corner that grows with speed and changes in long sweepers as weight moves side to side.
• Gear oil on the rear rotor, caliper or inside of the tire from an axle seal that cannot seal on a scored journal.
• ABS or traction control warning with a rear wheel speed fault caused by a cracked or loose tone ring.
• Wheel shake after a curb hit, from a bent flange.
• A loud clunk and no drive to one wheel, from a twisted or broken shaft or stripped splines.

How to confirm it before you buy

With the rear cover off, remove the cross shaft lock bolt and cross shaft, push the shaft inward, pop out the C-clip and slide the shaft out. A worn track, pitting or flaking on the bearing journal means replace the shaft. Then count the splines. Yukon makes two shafts for these cars: this 28 spline part and the 31 spline YA F880039. Both are 34-3/8 inches with an ABS ring, so spline count is what separates them. If you cannot count them, the 28 spline shaft measures about 1.29 inches across the spline and the 31 spline about 1.32 inches.

Fitment

Yukon's fitment table lists YA F880038 for 2003 to 2006 Ford Crown Victoria, Lincoln Town Car and Mercury Grand Marquis, and 2003 to 2004 Mercury Marauder, all with the 8.8 inch rear, 28 spline and ABS. Its product description says 2003 and up, but the table stops at 2006, so owners of a 2007-or-later car should send us the VIN before ordering. Yukon gives one part number with no side named, so check length and spline count against the shaft you pull. More axle and differential parts are in our hard parts catalog.

Install notes

• Put in a new wheel bearing and axle seal with the shaft; the bearing runs on the new journal.
• Seat the C-clip, reinstall the cross shaft and torque a new or thread-locked lock bolt.
• Check the rear ABS sensor for metal debris and damage before you reinstall it next to the new tone ring.
• If the car has a Traction-Lok limited slip that chatters in turns, this is the time for the Ford Performance M-4700-B Traction-Lok clutch kit. If the carrier bearings are worn, add the Yukon Ford 8.8 carrier installation kit.
• Refill with the gear oil specified on the axle tag or in the owner manual, plus friction modifier for a limited slip.

What is the difference between YA F880038 and YA F880039?

Spline count. F880038 is 28 spline and F880039 is 31 spline. Both are 34-3/8 inch, 5 lug shafts with an ABS tone ring for the 2003-up Panther cars.

Does it fit my 2005 Mercury Grand Marquis?

Yukon's table lists 2003 to 2006 Grand Marquis with the 8.8 rear, ABS and 28 spline shafts. Count the splines on your old shaft to be sure it is 28 and not 31.

Is the ABS tone ring already on the shaft?

Yes. Yukon states this axle is ABS compatible and includes the ABS tone ring, so you do not have to move the ring from the old shaft.

Will it fit a 2008 Crown Victoria?

Yukon's description says 2003 and up, but its fitment table only goes through 2006. Send us your VIN and the spline count from your old shaft before ordering for a 2007-or-later car.

Is it left or right side?

Yukon lists a single part number and does not name a side. Compare the 34-3/8 inch length and spline count to the shaft you remove before installing.