What is the purpose of changing the ring and pinion gear ratio?

Changing your ring and pinion gear ratio affects how your vehicle's engine power is delivered to the wheels. A lower numerical ratio like 3.55 is often used with larger tires to restore lost acceleration and improve towing or climbing ability. A higher numerical ratio is typically for stock or smaller tires to improve fuel economy.

What is included in this Omix ring and pinion kit?

This kit includes the 39-tooth ring gear and 11-tooth pinion gear, along with essential installation components. You'll also receive bearings, ring gear bolts, shims for backlash adjustment, a pinion seal, a crush sleeve, and the pinion nut.

Does this kit include everything needed for installation?

While this kit contains all the gears and necessary hardware for the differential itself, specialized tools are required for proper gear setup and installation. You will need tools for measuring backlash, pinion bearing preload, and potentially a press for bearings. It is recommended to consult the manufacturer's installation instructions or a professional mechanic.

Specifications

Brand: OMIX
Part #: 16513.31
UPC: 804314032487

OMIX

Omix Dana 30 Ring & Pinion 3.55 97-06 Wrangler TJ

Name: Omix Dana 30 Ring & Pinion 3.55 97-06 Wrangler TJ
Brand: OMIX
SKU: omix-omix-dana-30-ring-pinion-3-55-97-06-wrangler-tj-t14-441970
Price: 752.50 USD
Availability: BackOrder

$752.50

On Backorder

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Fits 1997-2006 Jeep Wrangler. Omix Dana 30 ring and pinion set with 3.55 ratio for improved off-road performance.

Key Features

Fits 1997-2006 Jeep Wrangler TJ models with Dana 30 front differentials.
Features a 3.55 gear ratio, ideal for balancing on-road manners with off-road performance.
Includes a 39-tooth ring gear and an 11-tooth pinion gear.
Comes with a complete installation kit including bearings, ring gear bolts, shims, pinion seal, crush sleeve, and pinion nut.
Built to meet or exceed original equipment manufacturer specifications.
Direct fit replacement for OE part number 4864906.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

No-fit, no charge. Wrong part? Send it back, free return label.

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About this part

Product Details

If you're looking to change the gear ratio in your 1997-2006 Jeep Wrangler TJ's Dana 30 front differential, this ring and pinion set from Omix is a solid option. This kit is designed to replace your original gears with a 3.55 ratio, which is a popular choice for balancing on-road drivability with improved off-road capability, especially when paired with larger tires. Getting the right gear ratio is crucial for how your Jeep performs, affecting everything from acceleration to how it handles climbing hills or crawling over obstacles.

Omix has put together a comprehensive kit here, including not just the 39-tooth ring gear and 11-tooth pinion gear, but also all the necessary installation components. You'll find bearings, ring gear bolts, shims for proper backlash adjustment, a pinion seal, a crush sleeve to set pinion bearing preload, and the pinion nut. This means you should have everything you need to get the job done, assuming you have the specialized tools for setting up gears. Proper installation is key for the longevity of your differential, so refer to the manufacturer's instructions for the correct setup procedures.

This set is built to meet or exceed original equipment specifications, ensuring a reliable replacement for your Jeep's drivetrain. It's a direct fit for the Dana 30 front axle found in the specified Wrangler models, making the installation process as straightforward as possible for a gear change. With a limited 5-year warranty from Omix, you can be confident in the quality and durability of this ring and pinion set for your TJ.