Jeep Wrangler Differential Install Kit - Rear - Revolution Gear & Axle - Dana 44 Thick Koyo 4.10 Ratio - `03-`06. This rear gear package is built for 2003–2006 TJ Wranglers with the Dana 44 thick housing, offering a direct-replacement 4.10 ring-and-pinion set from Revolution Gear & Axle.

Designed for enthusiasts upgrading or repairing the rear differential, this kit uses a 4.10 final drive ratio to improve low-end torque and drivability with larger tires. The package is specified for the Dana 44 thick rear housing and includes Koyo-specified bearing components to match the gear set for reliable engagement and longevity when installed correctly. It’s intended as a solid OEM-fit replacement for drivers who need consistent performance from their rear axle.

Features

• 4.10 ring-and-pinion ratio for improved low-speed torque
• Designed for 2003–2006 Jeep Wrangler TJ rear Dana 44 thick housing
• Koyo-specified bearing components included with the gear package
• Manufactured by Revolution Gear & Axle to fit as a direct replacement

If you have questions about fitment or installation, call us directly — we’re happy to help. We offer installation and customization services at two locations: Austin, Texas and Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA) to speak with our techs. If you’re thinking about purchasing multiple items, contact us for possible shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov