Yukon YG F8.8-355 Ring & Pinion 3.55 Ratio for 1983-2014 Ford 8.8 F-150 Mustang

Regular price: $231.95
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Product Specification:

SKU:YUKYG F8.8-355

MPN: YG F8.8-355

UPC: 883584240952

Weight: 18.2 lb

Inventory: 6

Type: Final Drive Gears

Vehicle Fitment

1983-2014 Ford F-150 (2WD/4WD, All Engines) - excludes 5.4L Lightning and higher GVWR models equipped with 9.75" axle
1983-1996 Ford Bronco (2WD/4WD, All Engines)
1985-2014 Ford Mustang (RWD, All Engines) - solid axle applications; excludes IRS-equipped SVT Cobra models
1991-2003 Ford Explorer (2WD/4WD, All Engines) - solid axle; Explorer Sport retains solid 8.8" through 2003
1990-2011 Ford Ranger (2WD/4WD, 4.0L V6 and Super Cab models)
1997-2009 Ford Expedition (2WD/4WD, All Engines)
1992-2011 Ford Crown Victoria (RWD, All Engines)
1989-1997 Ford Aerostar (2WD, 4.0L V6 Only - AWD models use 7.5" axle)
1983-2011 Ford E-150 Econoline Van (RWD, All Engines)

Fitment Notes

Fits standard rotation Ford 8.8" solid axle applications only - does not fit reverse rotation front axle variants
Does not fit 2015+ F-150 Super 8.8" 12-bolt rear - a separate gear set is required for 2015+ applications
Does not fit Ford 9.75" 12-bolt rear axle used on higher GVWR F-150 trims and F-250 models
Does not fit IRS (Independent Rear Suspension) versions of the 8.8" found in SVT Mustang Cobra and select Lincoln models
Ford Ranger fitment confirmed for 4.0L V6 models and 1998-2011 Super Cab variants regardless of engine; verify axle diameter before ordering on other Ranger trims

Features

High-performance ring and pinion engineered specifically for the standard rotation Ford 8.8" 10-bolt rear differential
Gear tooth surface finish optimized by Yukon engineers to minimize friction and heat under high-torque and sustained driving conditions
Manufactured from high-grade steel with advanced heat-treating for long-term wear resistance and durability
Dimensioned to OEM specifications for accurate pinion depth, backlash, and contact pattern - simplifies setup and reduces noise risk
3.55 ratio offers a highway-friendly re-gear option - ideal for mild tire size increases or restoring fuel economy and RPM balance without sacrificing towing comfort
Standard ring gear rotation - direct replacement for factory Ford 8.8" solid axle applications
Backed by Yukon's Y.E.S. Plan - lifetime, no-questions-asked coverage for as long as you own the vehicle
Validated through Yukon's two in-house quality labs for metallurgical composition and dimensional accuracy

Specifications

Differential Application: Ford 8.8" (Standard Rotation, Solid Axle, Rear)
Gear Ratio: 3.55:1
Ring Gear Diameter: 8.800"
Ring Gear Teeth: 39
Pinion Gear Teeth: 11
Pinion Spline Count: 30
Pinion Shaft Diameter: 1.625"
Ring Gear Bolts: 10
Cover Bolts: 10
Ring Gear Rotation: Standard
Position: Rear Differential

Included Components

1x High-Performance Ring Gear
1x High-Performance Pinion Gear

Product Description

The Yukon YG F8.8-355 is a high-performance ring and pinion gear set built for the standard rotation Ford 8.8" 10-bolt rear differential in a 3.55:1 ratio. Compatible with F-150 trucks, Mustangs, Broncos, Explorers, Rangers, Expeditions, Crown Victorias, and Econoline vans from 1983 through 2014, this gear set is the right choice for builders seeking a mild ratio upgrade that prioritizes highway efficiency and daily driveability. The 3.55 is particularly well-suited for moderate tire size increases - correcting RPM drop at highway speeds without pushing the engine into the higher rev range associated with more aggressive ratios like 3.73 or 4.11.

Yukon engineers the gear tooth surface finish to reduce friction and heat buildup, contributing to quieter operation and longer service life under sustained driving conditions. Both the ring and pinion are produced from high-grade steel with advanced heat-treating applied to OEM dimensional tolerances, ensuring a clean contact pattern and straightforward setup for experienced installers. The 30-spline pinion and standard rotation design make this a direct-fit replacement for the solid axle Ford 8.8" across its full production run.

Before ordering, confirm your axle is the standard rotation solid-axle 8.8" 10-bolt - this gear set does not fit the 2015+ Super 8.8" 12-bolt rear, the Ford 9.75" rear, or IRS variants of the 8.8". A matching master overhaul kit, crush sleeve, and bearings are sold separately and strongly recommended for a complete rebuild. All Yukon ring and pinion sets are covered under the Y.E.S. Plan, providing lifetime protection for as long as you own the vehicle.