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Yukon Gear Ring & Pinion Gear Set with Yoke Kit for Toyota Land Cruiser 8 in. Front (Reverse Rotation, High Pinion) (YG TLCF-488RK)
The YG TLCF-488RK is a Yukon Gear high performance ring & pinion gear set with yoke kit precision-engineered for the Toyota Land Cruiser 8 in. Front (Reverse Rotation, High Pinion). Built for enthusiasts and professionals demanding consistent performance under the most demanding conditions, the YG TLCF-488RK uses CNC-machined gear profiles and vacuum heat-treated alloy steel to deliver superior tooth strength, reduced friction, and extended service life. The YG TLCF-488RK includes a yoke kit and is designed for the non-clamshell Land Cruiser front housing only. Do not use in the clamshell-style housing.
Features and Benefits
- High-grade alloy steel construction engineered for heavy-duty applications
- CNC-machined tooth geometry optimized for low friction and heat generation
- Vacuum heat treatment provides consistent case hardness and core toughness
- Precision-machined to OEM tolerances for straightforward installation in the Toyota Land Cruiser 8 in. Front (Reverse Rotation, High Pinion)
- Compatible with most factory and aftermarket limited-slip, locker, and open differentials
- One-year manufacturer warranty; optional Yukon Y.E.S. lifetime protection plan available
- Sold as a matched ring and pinion set for synchronized break-in and wear patterns
- Excellent choice for vehicles running larger tires or modified for towing and off-road use
Vehicle Fitment
| Year | Make | Model | Trim |
|---|---|---|---|
| 1991 | Toyota | Land Cruiser | FJ80 |
| 1992 | Toyota | Land Cruiser | FJ80 |
| 1993 | Toyota | Land Cruiser | FJ80 |
| 1994 | Toyota | Land Cruiser | FJ80 |
| 1995 | Toyota | Land Cruiser | FJ80 |
| 1996 | Toyota | Land Cruiser | FJ80 |
| 1997 | Toyota | Land Cruiser | FJ80 |
Specifications
| Specification | Detail |
|---|---|
| Part Number | YG TLCF-488RK |
| UPC | 883584243854 |
| Differential | Toyota Land Cruiser 8 in. Front (Reverse Rotation, High Pinion) |
| Ring Gear Size | 8.00 in. |
| Pinion Spline Count | 29 spline pinion |
| Gear Ratio | 4.88 |
| Type | Ring & Pinion Gear Set with Yoke Kit |
| Warranty | 1 Year Against Manufacturer Defects |
What Is Included
- One (1) ring gear
- One (1) pinion gear
- Installation instructions
Frequently Asked Questions
Q: What differential does YG TLCF-488RK fit?
A: The YG TLCF-488RK is engineered specifically for the Toyota Land Cruiser 8 in. Front (Reverse Rotation, High Pinion). Confirm your axle model, housing type, and pinion spline count before ordering.
Q: What gear ratio does YG TLCF-488RK provide?
A: This set delivers a 4.88 gear ratio for the Toyota Land Cruiser 8 in. Front (Reverse Rotation, High Pinion). This ratio is ideal for vehicles running larger than stock tires or requiring more low-speed torque.
Q: Is a new carrier required when installing YG TLCF-488RK?
A: Depending on the ratio change, a new differential carrier may be required. Consult the Yukon gear ratio guide or contact a drivetrain specialist to confirm carrier compatibility for your specific axle ratio change.
Q: What warranty comes with YG TLCF-488RK?
A: Yukon Gear backs the YG TLCF-488RK with a one-year warranty against manufacturer defects. The Magnuson-Moss Warranty Act ensures that installing aftermarket parts like YG TLCF-488RK cannot void your vehicle's original manufacturer warranty unless the part is proven to have caused a specific failure.
Q: What break-in procedure is required for YG TLCF-488RK?
A: After installing YG TLCF-488RK, avoid sustained highway speeds and heavy towing for the first 500 miles. Change the differential fluid after the break-in period to flush out metal particles.
Q: What gear oil should I use after installing YG TLCF-488RK?
A: Use the gear oil type and viscosity recommended for your specific differential. For limited-slip applications, always add friction modifier additive as required. Consult your Yukon installation guide for specific recommendations.
Q: Can I install YG TLCF-488RK myself?
A: Professional installation is recommended. Proper backlash, pinion depth, and bearing preload settings are critical. Improper setup leads to premature gear failure. A dial indicator, a bearing press, and a torque wrench are the minimum required tools.
Q: Will installing YG TLCF-488RK affect my vehicle's factory warranty?
A: Under the Magnuson-Moss Warranty Act, a vehicle manufacturer must prove that an aftermarket part directly caused the failure before denying warranty coverage. Simply having an aftermarket part installed is not sufficient grounds to void your vehicle warranty.
Installation Instructions
- Support the vehicle safely on jack stands and remove the differential cover. Drain all fluid.
- Remove the driveshaft and the differential carrier assembly from the axle housing.
- Record factory shim thicknesses and bearing preload values before disassembly.
- Press the old ring gear off the carrier. Clean all mating surfaces thoroughly.
- Press the new ring gear from the YG TLCF-488RK set onto the carrier, heating to 250 degrees F if needed.
- Install the new pinion gear with the appropriate depth shim. Set pinion bearing preload per Yukon specifications.
- Install the carrier, set carrier bearing preload and backlash per the Yukon gear installation guide included with YG TLCF-488RK.
- Apply gear marking compound and verify the tooth contact pattern before final assembly.
- Reinstall the differential cover with new gasket or RTV sealant. Torque bolts to specification.
- Fill with the correct differential fluid and additive as required for the Toyota Land Cruiser 8 in. Front (Reverse Rotation, High Pinion).
- Road-test and re-inspect fluid level after 50 miles during the break-in period.
- Change differential fluid at 500 miles to remove break-in metal particles.
WARNING: This product can expose you to chemicals including lead, which is 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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