Yukon Gear 4.88 V6/Turbo Differential Ring & Pinion Gear Set for Toyota 8" Differential 4WD (1986-95 4Runner/Pickup)
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Yukon Gear V6/Turbo 4.88 Ring & Pinion Gear Set
For 1986–1995 Toyota 4Runner & Pickup 4WD with Toyota 8" V6/Turbo Rear Differential
Overview
The Yukon Gear V6/Turbo 4.88 Ring & Pinion Gear Set is a differential gearing upgrade for Toyota 4WD trucks and SUVs equipped with the Toyota 8-inch V6/Turbo rear third member.
The 4.88:1 ratio increases mechanical advantage compared with taller factory gearing, making it a popular choice for vehicles running larger tires while retaining a balance between low-speed off-road performance and highway use.
This gear set uses a 29-spline pinion. Factory 1986–1995 V6/Turbo differentials commonly use 27-spline pinion hardware, so the appropriate 29-spline companion flange, pinion seal, and pinion nut are required when converting an original differential. Fitment is determined by the installed third member, not engine alone.
Key Features
- 4.88:1 ring and pinion gear ratio
- Designed for the Toyota 8" V6/Turbo rear differential
- 8.125-inch ring gear diameter
- Heavy-duty 29-spline pinion
- 10 ring gear bolts
- High-grade steel ring and pinion construction
- Gear-tooth surface finishing designed to reduce friction and heat
- Increased mechanical advantage for larger tires and off-road use
- Available with or without 27-to-29 spline conversion hardware
- Professional differential setup required
Toyota 8" V6/Turbo Differential Identification
Toyota used different 8-inch third-member configurations across these vehicles, so the installed differential should be identified before ordering.
V6/Turbo Toyota 8" Differential
- Typically has four reinforcement ribs on each side
- Features a distinctive trapezoid-shaped upper rib
- Used behind factory 22R-TE Turbo and 3VZ-E V6 applications
- Uses this V6/Turbo-style ring and pinion gear set
Standard 4-Cylinder Toyota 8" Differential
- Typically has three reinforcement ribs on each side
- Commonly found behind 20R, 22R, and 22RE engines
- Uses the separate 4-cylinder Toyota 8-inch gear set
Because Toyota 8-inch third members can be swapped between many applications, always identify the actual differential housing rather than relying solely on the vehicle's engine.
Vehicle Fitment
Toyota Pickup
- 1986–1988 Toyota Pickup – 2nd Gen – 4WD – 22R-TE Turbo – Toyota 8" V6/Turbo Differential – Rear
- 1988 Toyota Pickup – 2nd Gen – 4WD – 3VZ-E V6 – Toyota 8" V6/Turbo Differential – Rear
- 1989–1995 Toyota Pickup – 3rd Gen – 4WD – 3VZ-E V6 – Toyota 8" V6/Turbo Differential – Rear
Toyota 4Runner
- 1986–1987 Toyota 4Runner – 1st Gen – 4WD – 22R-TE Turbo – Toyota 8" V6/Turbo Differential – Rear
- 1988–1989 Toyota 4Runner – 1st Gen – 4WD – 3VZ-E V6 – Toyota 8" V6/Turbo Differential – Rear
- 1990–1995 Toyota 4Runner – 2nd Gen – 4WD – 3VZ-E V6 – Toyota 8" V6/Turbo Differential – Rear
Fitment Notes
- Rear differential application only
- Toyota 8-inch V6/Turbo third member required
- Does not fit the standard 4-cylinder Toyota 8-inch third member
- Does not fit the Toyota 7.5-inch IFS front differential
- 4.88:1 gear ratio
- 29-spline pinion
- Factory 27-spline configurations require a compatible 29-spline companion flange, pinion seal, and pinion nut
- On 4WD vehicles, front and rear differential ratios must match before engaging four-wheel drive
- Verify the installed differential on vehicles with axle, engine, or third-member swaps
- Professional installation and differential setup are recommended
- Correct pinion depth, bearing preload, backlash, and gear contact pattern must be established during installation
- Proper ring-and-pinion break-in should be completed after installation
Factory G144 4.88 Differential: The factory G144 V6 4.88 third member uses a unique offset housing and thinner factory ring gear. Standard aftermarket ring and pinion sets do not fit this housing. A standard Toyota V6/Turbo 8-inch third member is required before installing aftermarket gears.
Product Specifications
Brand: Yukon Gear & Axle
Product Type: Ring & Pinion Gear Set
Position: Rear
Differential: Toyota 8" V6/Turbo
Gear Ratio: 4.88:1
Ring Gear Diameter: 8.125 Inches
Pinion Spline: 29-Spline
Ring Gear Bolts: 10
Material: High-Grade Steel
Drivetrain: 4WD
Warranty: 1-Year Limited Warranty
Installation: Professional Differential Setup Recommended
Available Configurations
29-Spline Gear Set
- (1) Yukon 4.88 Ring Gear
- (1) Yukon 4.88 Pinion Gear
- For applications already equipped with the required 29-spline pinion hardware
29-Spline Gear Set + 27-to-29 Spline Conversion Hardware
- (1) Yukon 4.88 Ring Gear
- (1) Yukon 4.88 Pinion Gear
- (1) 29-Spline Companion Flange / Yoke
- (1) Pinion Seal
- (1) 29-Spline Pinion Nut
- Provides the pinion hardware required to convert applicable factory 27-spline configurations