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Engineered for Longer Life and a Smoother Ride

PROBLEM
“I know I’ll need to change my gear ratio when I modify my Jeep® Wrangler JK, and I want to be sure that my upgraded gearing is high quality—and even better than before.”

SOLUTION
Spicer® ring and pinion gearing for the Jeep® Wrangler JK offers the benefits of precision-machined gearing for genuine Dana axles, including a smoother, quieter ride and up to double the life of non-genuine parts.

Spicer Ring and PinionGenuine Spicer-Quality Gearing for Your Jeep® JK

Experience a genuine factory-grade fit when you install Spicer® ring and pinion gearing into your Wrangler JK. Dana design, engineering, testing, and manufacturing processes all work together in Spicer ring and pinion gearing to ensure performance that non-genuine parts simply cannot deliver.

Precision-machined and heat-treated for exceptional durability

2007-2018 Jeep® Wrangler JK (Non-Rubicon)

Front Axle Ratio Spicer Part # Install Kit Part # Master Kit Part #
Dana 30™ 3.73 2005021-5* 2017366 2017378
Dana 30™ 4.10 2005021-5* 2017366 2017378
Dana 30™ 4.56 10026645 2017366 2017378
Dana 30™ 4.88 10026639 2017366 2017378
Dana 30™ 5.13 10026642 2017366 2017378
Rear Axle Ratio Spicer Part # Install Kit Part # Master Kit Part #
Dana 44™ 3.21 2007774 2017086 2017109**
Dana 44™ 3.73 2008688 2017086 2017109**
Dana 44™ 4.10 2007772 2017086 2017109**
Dana 44™ 4.56 2018737 2017086 2017109**
Dana 44™ 4.88 2018747 2017086 2017109**
Dana 44™ 5.13 2018756 2017086 2017109**
Dana 44™ 5.38 10027182 2017086 2017109**

2007-2018 Jeep® Wrangler JK (Rubicon)

Front Axle Ratio Spicer Part # Install Kit Part # Master Kit Part #
Dana 44™ 3.73 2013742-5* 2017088 2017106
Dana 44™ 4.10 2005024-5* 2017088 2017106
Dana 44™ 4.56 2019746 2017088 2017106
Dana 44™ 4.88 2019749 2017088 2017106
Dana 44™ 5.13 2019752 2017088 2017106
Dana 44™ 5.38 10010738 2017088 2017106
Rear Axle Ratio Spicer Part # Install Kit Part # Master Kit Part #
Dana 44™ 3.21 2007774 2017086 2017109**
Dana 44™ 3.73 2008688 2017086 2017109**
Dana 44™ 4.10 2007772 2017086 2017109**
Dana 44™ 4.56 2018737 2017086 2017109**
Dana 44™ 4.88 2018747 2017086 2017109**
Dana 44™ 5.13 2018756 2017086 2017109**
Dana 44™ 5.38 10027182 2017086 2017109**

Spicer gearing offers the easiest possible set-up, a quieter ride and unsurpassed strength.

  • Manufactured with a special grade of steel for a higher quality product
  • Precision-machined and heat-treated for consistent quality, exceptional durability and enhanced lifespan
  • Engineered to ensure matched sets and mating of the gears
  • Designed to maximize powerful four-wheel drive capabilities and provide optimal performance

Spicer® Finishes First in Fatigue Tests

The Test: Each gear is installed in a production axle, which runs on a dyno until the gear fractures. Both high-load and low-load simulation tests are performed.

The Result: Under low-load conditions, Spicer ring and pinion gears performed more than twice as many cycles as the competition. Under high-load conditions, Spicer ring and pinion gears lasted nearly three times as many cycles as the closest competitor!

* Includes Ring Gear Bolts & Pinion Nut

** Fits 2008 & Newer Wrangler JK.  2007 Model Year Uses PN# 2017102