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Complete Replacement 3rd Member for 2016-2023 Toyota Tacoma E-Locker, 4.30 Gear Ratio
The Yukon Gear YDAT8.75-430E is a complete assembled third member dropout assembly for the Toyota Tacoma T8.75 rear differential with electronic locker carrier, built to a 4.30 gear ratio. This unit drops directly into your 2016-2023 Tacoma's rear differential housing and replaces the entire ring and pinion, E-Locker compatible carrier, and associated hardware as one assembled unit. The YDAT8.75-430E is built for Tacoma owners running the factory electronic locker who want to regear to a 4.30 ratio to match 35-37 inch tire upgrades while maintaining full E-Locker functionality. OEM reference number for this assembly is 41110-0K650.
Key Features
- Complete Assembled 3rd Member — drop-in replacement for the Toyota T8.75 rear differential
- 4.30 Gear Ratio — ideal upgrade for 35-37 inch tire applications
- E-Locker Compatible Carrier — maintains factory electronic locker engagement
- OEM Reference 41110-0K650 — correct fitment for 2016-2023 Tacoma E-Locker models
- Dropout Design — replaces the entire 3rd member without housing removal
- Lifetime Warranty — Yukon Gear Lifetime Limited Warranty with Magnuson-Moss protections
| Specification | Detail |
|---|---|
| Part Number | YDAT8.75-430E |
| OEM Reference | 41110-0K650 |
| Brand | Yukon Gear and Axle |
| Differential Type | Toyota T8.75 Rear |
| Ring Gear Diameter | 8.75 inches |
| Gear Ratio | 4.30 |
| Carrier Type | E-Locker |
| Ring Gear Bolt Count | 12 |
| Spline Count | 34 |
| Assembly Type | Complete 3rd member (dropout) |
| UPC | 883584217809 |
What's Included
- 1x Assembled Toyota T8.75 third member dropout unit (ring gear, pinion, E-Locker carrier, bearings)
This Part Fits
| Year | Make | Model | Notes |
|---|---|---|---|
| 2016 | Toyota | Tacoma | With factory E-Locker rear differential, T8.75 |
| 2017 | Toyota | Tacoma | With factory E-Locker rear differential, T8.75 |
| 2018 | Toyota | Tacoma | With factory E-Locker rear differential, T8.75 |
| 2019 | Toyota | Tacoma | With factory E-Locker rear differential, T8.75 |
| 2020 | Toyota | Tacoma | With factory E-Locker rear differential, T8.75 |
| 2021 | Toyota | Tacoma | With factory E-Locker rear differential, T8.75 |
| 2022 | Toyota | Tacoma | With factory E-Locker rear differential, T8.75 |
| 2023 | Toyota | Tacoma | With factory E-Locker rear differential, T8.75 |
Frequently Asked Questions
-
Q: What is the difference between YDAT8.75-430E and YDAT8.75-430?
A: Both are 4.30 ratio T8.75 assemblies. The YDAT8.75-430E includes an E-Locker compatible carrier for Tacomas with the factory rear electronic locker. The YDAT8.75-430 uses a standard open carrier for non-locker models. Using the wrong carrier will disable or not accommodate the E-Locker motor. -
Q: Does this maintain full E-Locker function?
A: Yes, provided the factory E-Locker motor is transferred from the original carrier to the YDAT8.75-430E carrier. The electronic engagement mechanism functions the same as stock. -
Q: Is 4.30 the right ratio for 35-inch tires?
A: A 4.30 ratio is widely recommended for 2016-2023 Tacomas running 35-37 inch tires. It restores low-end torque and keeps cruise RPM close to factory levels compared to stock 3.73 or 3.91 ratios with oversized tires. -
Q: Do I need to regear the front differential at the same time?
A: Yes. For 4WD applications, front and rear ratios must match. Plan a complete front and rear regear to avoid driveline bind in 4WD mode. -
Q: Is professional installation recommended?
A: Yes. Correct installation requires proper torque values, fluid fill, and a function test of the E-Locker system. A drivetrain shop experienced with Toyota differentials is the best choice. -
Q: What gear oil is required?
A: Toyota specifies 75W-90 GL-5 synthetic gear oil. Fill to the bottom of the fill plug hole. No friction modifier is needed for E-Locker carriers. -
Q: What is the warranty?
A: Lifetime Limited Warranty from Yukon Gear and Axle. Magnuson-Moss Warranty Act protections apply. -
Q: How heavy is the YDAT8.75-430E?
A: Approximately 90 lbs. Ground freight with liftgate service is recommended for residential delivery.
Installation Notes
- Drain the rear differential fluid before beginning
- Remove both rear axle shafts to allow third member extraction
- Remove the E-Locker motor from the original carrier before discarding the old third member
- Transfer the E-Locker motor to the YDAT8.75-430E carrier and reinstall the motor connector
- Install the assembled third member and torque all fasteners to Toyota specification
- Reinstall axle shafts and fill with 75W-90 GL-5 gear oil to the fill plug level
- Test E-Locker engagement with the vehicle stationary before road use
California Prop 65 Warning
WARNING: This product can expose you to chemicals including lead and lead compounds, 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.
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