Click to zoom in
Yukon Gear 1541H Alloy 5 Lug Rear Axle (Single Shaft), 1999-2004 Ford Mustang 8.8in
Yukon Gear part YA FM4235E is a replacement 5-lug rear axle shaft engineered for the 8.8in differential in 1999-2004 Ford Mustang models, including GT, Mach 1, and SVT Cobra. Built from 1541H alloy with modern heat-treating for a stronger-than-stock axle suited to street and track use. Sold as a single shaft.
Key Features
- 1541H alloy construction with advanced heat-treating
- 5-lug bolt pattern for the 8.8in Mustang differential
- Stronger-than-stock replacement for street and track use
- Sold as a single shaft
Fitment
| Year | Make | Model | Trim |
|---|---|---|---|
| 1999-2004 | Ford | Mustang | Base / GT |
| 2001 | Ford | Mustang | GT Bullitt |
| 2003-2004 | Ford | Mustang | Mach 1 |
| 1999, 2001, 2003-2004 | Ford | Mustang | SVT Cobra |
| 2000 | Ford | Mustang | SVT Cobra R |
Specifications
| Detail | Value |
|---|---|
| Manufacturer part number | YA FM4235E |
| Application | Ford Mustang 8.8in rear differential |
| Bolt pattern | 5 lug |
| Material | 1541H alloy |
| Quantity | Sold as a single shaft |
What's Included
- 1 replacement rear axle shaft (single side)
About Yukon Gear
Yukon Gear & Axle manufactures differential, axle, and drivetrain components engineered for durable, precise-fit replacement and upgrade applications.
FAQ
What vehicles does this axle fit?This axle fits 1999-2004 Ford Mustang models with the 8.8in rear differential, including GT, Mach 1, and SVT Cobra.
Is this one axle or a pair?This is sold as a single shaft; order two if you need both sides.
Is this a direct OEM replacement?Yes, this axle is designed as a direct-fit, stronger-than-stock replacement for the factory axle.
What material is this axle made from?This axle is made from 1541H alloy steel for added strength over stock.
Is professional installation recommended?Yes. Axle replacement requires differential disassembly and should be performed by a qualified technician.
Can this axle handle track use?Yes, this axle is engineered to be stronger than stock for street and track use.
Does this fit the SVT Cobra?Yes, this axle fits the 1999, 2001, 2003, and 2004 SVT Cobra along with the 2000 SVT Cobra R.
Do I need to confirm fitment before ordering?Yes. Confirm your exact Mustang model and year before ordering.
Installation Instructions
- Remove the differential cover and carrier assembly.
- Remove the old axle shaft from the housing.
- Install the new axle shaft, ensuring proper engagement with the differential.
- Reassemble the carrier and torque all fasteners to specification.
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Axles
Performance axle shafts and complete axles for street cars, drag builds, trucks, Jeeps, and all-wheel-drive platforms are stocked at Black Ops Auto Works. Shop heavy-duty CV axles, front axle shafts, rear axle shafts, chromoly axles, 300M axles, drag-race axles, off-road axle upgrades, hubs, CV joints, spline-matched replacement axles, and drivetrain components for Trackhawk, Durango Hellcat, Charger, Challenger, Subaru WRX and STI, Honda, Nissan Skyline, GM trucks, and Ford applications. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 241 axle SKUs across front and rear drive positions, axle-shaft materials, CV configurations, spline counts, power ratings, and vehicle-specific drivetrain systems. What This Axle Collection Covers Axles transfer torque from the differential or transaxle to the driven wheels. This collection includes upgraded shafts and replacement units for perfo...
View Axles Products
Axles & Components
Performance axles and axle components for high horsepower Mopar Hellcat and Trackhawk platforms, sport compact swaps, and classic muscle cars and trucks are stocked at Black Ops Auto Works. Shop upgraded CV axle shafts, axle seals, axle disconnect kits, and OE style replacement axles from DSS, USA Standard, Yukon Gear and Axle, and G Force for Jeep, Dodge, Honda, Subaru, Nissan, and classic GM truck platforms. Every axle is filterable by year, make, model, trim, and horsepower rating so the correct spline count, length, and CV joint configuration ships the first time. Black Ops Auto Works carries 276 axle and axle component SKUs across Mopar Hellcat and Trackhawk, JDM and sport compact swap platforms, and classic GM truck and passenger car applications. What This Collection Covers Axle shafts transmit engine and transmission torque from the differential to the wheels, and factory axles are engineered around factory horsepower and torque figures with limited safety margin for sig...
View Axles & Components Products
Drivetrain
Drivetrain parts for high-horsepower Mopar, truck, Jeep, and import platforms are stocked at Black Ops Auto Works. Shop differentials, axles, driveshafts, clutch kits, flywheels, flexplates, shifters, transmission components, ring and pinion gears, differential braces, and driveline hardware for Hellcat, Trackhawk, TRX, HEMI, LS, LT, Coyote, and turbocharged import platforms. Every drivetrain part is filterable by vehicle platform, drivetrain layout, transmission type, and power level so the correct part ships the first time. Black Ops Auto Works carries 4,765 drivetrain SKUs across differentials, axles, clutches, and transmission hardware. What This Category Covers The drivetrain transfers power from the engine to the wheels and includes the transmission, clutch, driveshafts, axles, differentials, ring and pinion gears, wheel hubs, wheel bearings, U-joints, shifters, mounts, and bushings. Upgrading these components improves power delivery, durability, and reliability under incr...
View Drivetrain Products
Ford Mustang Parts & Accessories
Ford Mustang parts and accessories for every generation are stocked at Black Ops Auto Works. Shop cold air intakes, cat-back and axle-back exhaust systems, headers, coilovers, lowering springs, sway bars, brake pads, brake rotors, big brake kits, carbon fiber body parts, wheel spacers, fuel system components, and lighting upgrades for the Fox Body, SN95, New Edge, S197, and S550/S650 platforms, including EcoBoost, GT, Mach 1, Shelby GT350, Shelby GT500, and Dark Horse. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 2,101 Ford Mustang SKUs across suspension, brakes, exhaust, intake, exterior, and drivetrain categories. What This Collection Covers The Ford Mustang has run through six generations since 1964, and each one uses different suspension geometry, brake hardware, exhaust routing, and body dimensions. This collection groups parts confirmed to fit specific Mustang generatio...
View Ford Mustang Parts & Accessories Products
Yukon Gear & Axle
Yukon Gear and Axle drivetrain parts are stocked at Black Ops Auto Works for GM, Ford, Chrysler, Ram, and Jeep platforms. Shop ring and pinion sets, positraction and locker units, axle overhaul kits, differential covers, driveshafts, and manual transmission rebuild components for Dana 60/61, GM 8.2/8.5/8.6/9.5, Ford 8.8/9/10.25/10.5, and Chrysler 8.25/9.25 inch axles. Yukon parts are proven in extreme-duty use, including King of the Hammers and Moab rock crawling events, and every part here is filterable by axle size, gear ratio, and spline count. Black Ops Auto Works carries 1122 Yukon Gear and Axle SKUs across ring and pinion, differential, and axle rebuild categories. What This Brand Covers Yukon Gear and Axle builds ring and pinion sets, differential carriers, positraction and locking differentials, axle shafts, bearing and seal kits, driveshafts, and manual transmission rebuild components for domestic trucks, SUVs, and Jeeps. The brand is best known for supporting extreme-d...
View Yukon Gear & Axle Products