Brand: Motive Gear
F150 97-99.5 F8.8F/F9.75R 4.88
UPC: 00698231332498
App/Model: Ford 8.8 IFS|Ford 9.75
Cover Bolt Quantity: 10 Front (F888488IFS)|12 Rear (F9.75-489)
Differential Model: Ford 8.8 IFS|Ford 9.75
Gear Ratio: 4.88|4.89
Pinion Gear Tooth Quantity: 8
Pinion Shaft Diameter: 1.626 Front (F888488IFS)|1.97 Rear (F9.75-489) Inch
Pinion Spline Count: 30 Front (F888488IFS)|31 Rear (F9.75-489)
Prop 65 Yes/No: No
Ring Gear Bolt Quantity: 10 Front (F888488IFS)|12 Rear (F9.75-489)
Ring Gear Material: 8620 Steel
Ring Gear Outside Diameter: 8.8 Front (F888488IFS)|9.75 Rear (F9.75-489) Inch
Ring Gear Rotation: Reverse Front (F888488IFS)|Standard Rear (F9.75-489)
Ring Gear Tooth Quantity: 39
Taxonomy A: LD Differential
Taxonomy B: Ring and Pinion Gear Packages
Taxonomy C: Front and Rear
Taxonomy D: 4.88
For Ford 8.8″ IFS and Ford 9.75″ – Ring and Pinions Including Timken Bearing Kits; 4.88 Ratio; Up To 1999.5

Installation Instructions
Installation Instructions
Installation Instructions
Installation Instructions
Installation Instructions
Installation Instructions

Warranty Period: 1 Year or 50,000 Miles

Replaces:

• Revolution Gear & Axle: REV-F150-9.75-97-98-488

Applications:

• 1997-1999 Ford Expedition
• 1997-1999 Ford F-150
• 1998-1999 Lincoln Navigator