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2003-2010 Dodge Ram 2500/3500, Diesel
Nitro Gear Package, Select Ratio

03-10 Dodge Ram 2500 & 3500, Diesel, Gear Package Kit

Price: $1,443.75

Product Code: GPRAM-SELECT

Ram GP Ratio*:

Nitro Gear Oil:

Description Vehicle Applications Warranty Information

Dodge Ram 2500/3500
with Cummins Diesel
Nitro Front & Rear Gear Package Kit, Select Ratio

2003-2010 Dodge Ram 2500 with Cummins Diesel
2003-2010 Dodge Ram 3500 with Cummins Diesel

Front Differential: AAM 9.25" Reverse
Rear Differential: AAM 11.5"
Gear Ratio: 3.42, 3.73, 4.11
4.30, 4.56, 4.88 or 5.13
Manufacturer: Nitro Gear & Axle
Warranty: 2 Years

6 quarts of Nitro Synthetic Plus Gear Lube

Tech Notes:
-Direct fit for 2007-2010 Dodge 2500 & 3500 with OEM carrier ONLY.
-2003-2006 Models will require a front ring gear spacer MRG925A or a 2007 & newer style carrier NC-AAM9.25-COM .

2007-2010 Dodge 2500 & 3500 will still require MRG925A ring gear spacer with aftermarket air locker such as ARBRD197.

*Some 2003 Models have a smaller AAM 10.5" rear axle. There is not a Gear Package for this application; however, we do have the parts individually. Contact us for details.

-Nitro Master kits include name brand OE quality bearings.

Gear Package Kit Includes:
Nitro front ring & pinion
Nitro front Master Install Kit
Nitro rear ring & pinion
Nitro rear Master Install Kit

Suffering from poor performance and reduced fuel economy resulting from oversized tires?

A Nitro gear change will help get that performance and economy back!

It is a common misconception that lower gears are only for hardcore off-roading, in actuality the average daily driven vehicle can see huge improvements in both performance and economy by properly matching their vehicle's gear ratio to their tire size all while reducing strain on the vehicles drivetrain.

We at Nitro Gear & Axle realize the difficulty for the average consumer or install shop to compile the list of parts and prices required when doing a gear change. To make it easier for everyone the experts at Nitro are introducing an industry first- “Gear Packages" for many popular 4x4 Fits. One part number. One price. One click away.

The kits assembled by Nitro Gear & Axle only use the highest quality bearings available from Timken & Koyo. Nitro Gear & Axle does not use any cheap Chinese bearings. By using only Timken & Koyo bearings just like all of the OEM vehicle manufacturers you can be assured that your differential will be reliable, durable, & quiet for years to come.

Nitro Gear and Axle Premium Differential Ring and Pinion Gears, Axles and parts

Nitro Gear & Axle strives to provide the highest quality differential components available. We take the steps necessary to ensure our parts are dependable. Our product range is continually growing to meet the needs of consumers for new ratios and Fits. At Nitro, we know differentials and know what it takes to provide you with high quality components.

"Nitro Gear Install"


This product can expose you to chemicals including toluene and benzene, which are known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to: www.P65Warnings.ca.gov

  • 2 Year warranty*

    Nitro Rings & Pinions:
  • Manufactured in South Korea
  • 8620 Steel Gear Forgings
  • Precision Machining
  • CNC Triple-lapping
  • Heat Treatment
  • Rockwell Hardness Tested

    Nitro Master Install Kits:
  • Koyo
Average Rating: Average Rating: 1 of 5 1 of 5 Total Reviews: 1 Write a review »

80W-140 Nitro Para-Synthetic Plus Gear Oil, GL5 (1 Quart)
Price: $20.78
80W-140 Nitro Para-Synthetic Plus Gear Oil, GL5 (1 Quart)
80W-140 Nitro Para-Synthetic Plus Gear Oil, GL5
Price: $290.92
80W-140 Nitro Para-Synthetic Plus Gear Oil, GL5

  0 of 0 people found the following review helpful:
1 of 5 Never received what I paid for nitro 3.42 gears August 3, 2021
Reviewer: Charlie Johnson from Montgomery, AL United States  
So, no where in the nitro 3.42 gears for 03 dodge 4x4 ad does it say that if we are out stock on kits we will substitute  without telling the customer a set of the roughest and worst quality gears and call it fare and honest.  Please finalize this issue by returning, $1500 as a minimum, but truly I deserve what I spent which is $3000. The money that I spent on the installation of the Fraudulent 3.42 Nitro gears and spacer.

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