2021-2025
2015-2020
2009-2014
2004-2008
1997-2003
Installation Time
(approx) 4 Hours
Difficulty Level:
Mechanical expertise or professional installation required.
Installation Guides
No guide available for this part yet.
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Nitro Gear & Axle 9.75-Inch Rear Axle Ring and Pinion Gear Kit; 3.73 Gear Ratio (97-08 F-150)Find parts that fit my vehicle
Item T540017
$0.00
Our Price
$399.00 kit
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Product Information
Features, Description, Q&A, Specs & Installation
Features
- High-Performance Differential Upgrade
- Rear Differential: Ford 9.75 in.
- Features a 3.73 Gear Ratio
- Describe Ring Gear Diameter
- 31-Spline Pinion
- 12 Ring Gear Bolts – Not Included
- 8620 Steel Construction
- Professional Installation Recommended
- 2-Year Manufacturer’s Warranty
- Standard Rotation
- Fits All 1997-2008 Ford F-150 Models
Description
Greater Power Output. With the Nitro Gear & Axle 9.75 in. Rear Ring Gear and Pinion Kit with 3.73 Gears, you can increase the power of your F-150. This smart upgrade allows your vehicle to hold up to high torque and power. This rear ring and pinion kit also keeps gear noise or whine to a minimum for a smooth, noise-free driving experience.
Tough Build. The Nitro Gear & Axle Ring Gear and Pinion Kit parts are manufactured from 8620 steel gear forgings in the same facilities where Ford parts are made. These precision-machined pieces have been heat-treated, CNC triple-lapped, and Rockwell tested for hardness. These added steps ensure products with excellent fitment, ideal contact pattern, and quiet, reliable drivability.
Professional Installation Recommended. Because of the intricate process of installing ring and pinion gears, it is best to have a professional do this to achieve the best results. The whole installation process can be done in about 4 hours.
Two-Year Manufacturer’s Warranty. Each Nitro Gear & Axle Ring Gear and Pinion Kit is warranted to be free from defects in material and workmanship for Two (2) Years. Some exclusions may apply. For more details, please see manufacturer's warranty.
Application. The Nitro Gear & Axle 9.75 in. Rear Ring Gear and Pinion Kit with 3.73 Gears is compatible with all 1997 to 2008 Ford F-150 models.
Technical Note. Ford F-150 models manufactured from 1997 to 1999 require crush sleeve spacer #FORF975114.
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Nitro Gear & Axle F9.75-373-NG
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Ring Gear
- (1) Pinion
4.5
Reviews of Nitro Gear & Axle Drivetrain Products (8)
Reviews of Nitro Gear & Axle Drivetrain products have an average rating of 4.5 out of 5
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