Yukon Gear 4.56 V6/Turbo Differential Ring & Pinion Gear Set for Toyota 8" Differential 4WD (1986-95 4Runner/Pickup)
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Yukon Gear V6/Turbo 4.56 Ring & Pinion Gear Set
For 1986–1995 Toyota 4Runner & Pickup 4WD with Toyota 8" V6/Turbo Rear Differential
Overview
The Yukon Gear V6/Turbo 4.56 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 4.56:1 ratio provides increased mechanical advantage compared with taller factory gearing while remaining numerically lower than 4.88 and 5.29 ratios. This makes 4.56 gearing well suited to vehicles with moderately larger tires that still see substantial street and highway use.
This gear set uses a 29-spline pinion. Factory pre-1996 V6/Turbo differentials typically use 27-spline pinion hardware, so the appropriate 29-spline companion flange, pinion seal, and pinion nut are required when converting an original differential.
Key Features
- 4.56:1 ring and pinion 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 designs across these vehicles. 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
- Factory application for 22R-TE Turbo and 3VZ-E V6 models
- Uses a 4-pinion carrier design
- 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 applications, fitment should be determined by the actual differential installed, not engine alone.
Vehicle Fitment
Toyota Pickup
- 1986–1987 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
- 4.56:1 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 third member on vehicles with axle, engine, or differential 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 this 4.56 gear set.
Product Specifications
Brand: Yukon Gear & Axle
Product Type: Ring & Pinion Gear Set
Position: Rear
Differential: Toyota 8" V6/Turbo
Gear Ratio: 4.56:1
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 4.56 Ring Gear
- (1) Yukon 4.56 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 4.56 Ring Gear
- (1) Yukon 4.56 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