Click to zoom in
SKU: YDATV6-373YDG / UPC: 883584132707
Yukon Gear YDATV6-373YDG Dropout Assembly for Toyota 8in Differential w/Dura Grip Posi & Yoke 30 Spline 3.73 Ratio
Yukon Gear dropout assemblies deliver ready-to-install performance for Toyota 8-inch differentials in 4Runner Pickup FJ Cruiser and Lexus GX470 models. Built by expert technicians these units arrive pre-shimmed and backlashed to exact specifications with a Dura Grip limited-slip differential for enhanced torque bias and traction. The nodular iron case adds strength to handle power while maintaining gear contact for durability.
Key Features
- Pre-Assembled Design – Completely built shimmed and set to factory backlash for bolt-in installation.
- Dura Grip Posi – Limited-slip differential boosts traction by distributing power to both wheels under load.
- Nodular Iron Case – Increases rigidity reduces flex for reliable gear mesh and extended life.
- 30 Spline Yoke – Matches upgraded axles for smooth power transfer.
- 3.73 Gear Ratio – Provides balanced acceleration and highway performance for off-road and street use.
- Toyota 8in Specific – Direct fit for 8-inch third member housings.
Specifications
| Detail | Value |
|---|---|
| Brand | Yukon Gear & Axle |
| Type | Differential Dropout Assembly |
| Compatibility | Toyota 8in 3rd Member 1985-2009 4Runner Pickup FJ Cruiser 2003-2009 Lexus GX470 |
| Gear Ratio | 3.73 |
| Spline Count | 30 |
| Carrier Material | Nodular Iron |
| Limited Slip Type | Dura Grip Positraction |
| Weight | 48 lbs |
| Shipping Dimensions | 20 x 20 x 10 inches |
| Country of Origin | USA |
| Warranty | Limited Lifetime on Gears |
Whats Included
- Pre-assembled dropout third member
- Dura Grip limited slip carrier
- 3.73 ring and pinion gears
- 30 spline yoke
- Pre-installed shims and bearings
- Pinion seal and nut
Product Notes
- Special order item ships within 1-3 business days
- Requires gear oil with limited slip additive
- Professional installation recommended for optimal setup
This Part Fits
| Year Range | Make | Model | Notes |
|---|---|---|---|
| 2003-2009 | Lexus | GX470 | Base |
| 1996-2001 | Toyota | 4Runner | Base |
| 1985-1989 | Toyota | 4Runner | DLX |
| 1996-2009 | Toyota | 4Runner | Limited |
| 2003-2009 | Toyota | 4Runner | Sport |
| 1985-2009 | Toyota | 4Runner | SR5 |
| 2007-2009 | Toyota | FJ Cruiser | Base |
| 2008 | Toyota | FJ Cruiser | Trail Teams Special Edition |
| 2007 | Toyota | FJ Cruiser | TRD Special Edition |
| 1985-1995 | Toyota | Pickup | Base |
| 1986-1987 | Toyota | Pickup | Base Turbo |
| 1985-1995 | Toyota | Pickup | DLX |
| 1985 | Toyota | Pickup | DLX Turbo |
| 1985-1995 | Toyota | Pickup | SR5 |
| 1985-1988 | Toyota | Pickup | SR5 Turbo |
Why Choose Yukon Gear?
- Expert assembly ensures precise setup out of the box
- Dura Grip design delivers consistent traction in all conditions
- Nodular iron construction stands up to high torque loads
- Proven reliability in off-road and performance applications
Frequently Asked Questions
- Q: Is this assembly plug and play?
- A: Yes bolt it into the diff housing add fluid and drive.
- Q: What fluid should I use?
- A: 75W90 synthetic gear oil with LS additive for the Dura Grip.
- Q: Does it fit upgraded axles?
- A: Yes the 30 spline yoke pairs with 30 spline axles.
Shipping & Handling
- Method: UPS Ground / FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed to prevent damage
Differential Dropouts
Differential dropouts are self-contained carrier assemblies that house the ring gear, pinion, and associated bearings in a removable unit, most commonly found in rear-steer solid axles used on off-road trucks and Jeeps. Swapping a dropout lets you change gear ratios or service the differential without fully removing the axle from the vehicle, saving significant labor time.Popular Differential Dropout ApplicationsDana 60 and Dana 70 front and rear axles commonly use dropout-style differentials on heavy-duty trucks and full-size Jeep builds. Aftermarket options from Yukon Gear and Axle offer dropout assemblies pre-set with matched ring-and-pinion gear ratios for popular re-gear combinations, including 4.10, 4.56, and 5.13 options for lifted and swapped builds.What gear ratio should I choose in a differential dropout?Gear ratio selection depends on tire diameter, transmission gear spread, and intended use. A common guideline is to re-gear after a tire size change of two inches or more ...
View Differential Dropouts Products
Differentials & Components
Differentials and components at Black Ops Auto Works include diff braces, diff covers, rebuild and overhaul kits, differential bushings and mounts, limited-slip differentials, yokes, and final drive gears built for street, towing, off-road, and racing applications. Black Ops Auto Works carries 1,332 drivetrain SKUs from Yukon Gear and Axle, ARB, OS Giken, SuperPro, and Per4mance Development, spanning Hellcat and Trackhawk platforms, trucks, Jeep Wrangler, and sport compacts. What This Collection Covers This collection combines fifteen related differential and drivetrain categories, including diff braces, diff covers and gaskets, rebuild and overhaul kits, install kits, seal kits, bushings, mounts, housings, dropouts, spider gears, yokes, complete differentials, and final drive gears. Product Types in This Collection Shoppers will find billet differential braces for high-horsepower RWD platforms, nodular iron and aluminum diff covers, master overhaul kits, differential-to-cradle ...
View Differentials & 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
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