SKU: 23304907258
ram gears

ram gears QU50878 4.10 Ratio Ring and Pinion Gear Set for 2007-2013.5 Ram

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Description

ram gears QU50878 4.10 Ratio Ring and Pinion Gear Set for 2007-2013.5 RamQU50878 4. 10 Ratio AAM Ring & Pinion Gear Set for 2003 to 2013. 5 Dodge Ram 4x4s with AAM 9 1 4" beam Front axles in Ram 1500 Mega Cab, Ram 2500, and Ram 3500 is a genuine AAM original equipment gear set. Available in four ratios: QU50886 3. 42 Ratio fits 2007 2013. 5 QU50887 3. 73 Ratio direct fits 2007 2013. 5. Will fit 2003 2006 if QU50729 diff is also used. See Tech Note 3. QU50878 4. 10 Ratio direct fits 2007 2013. 5. Will fit 2003 2006 if

QU50878 4.10 Ratio AAM Ring & Pinion Gear Set for 2003 to 2013.5 Dodge Ram 4x4s with AAM 9-1/4" beam Front axles in Ram 1500 Mega Cab, Ram 2500, and Ram 3500 is a genuine AAM original equipment gear set.

Available in four ratios:

QU50886 3.42 Ratio fits 2007-2013.5

QU50887 3.73 Ratio direct fits 2007-2013.5. Will fit 2003-2006 if QU50729 diff is also used. See Tech Note 3.

QU50878 4.10 Ratio direct fits 2007-2013.5. Will fit 2003-2006 if QU50729 diff is also used. See Tech Note 3.

QU50888 4.56 Ratio direct fits 2004-up Power Wagon with E-Lock front differential

Need More Info? Use the handy Links below to access over 40 years of Dan's product and vehicle specific Tech Notes to easily get the information you need for your vehicle's repair, maintenance, or upgrade project!

Dan the Gear Man® Tech Notes:
Before Ordering
Genuine AAM
Differential Changes
Optional Parts 2007-2013.5

Tech Note 1: Before Ordering
3.73 and 4.10 Ratio gear sets were used from 2007-2013.5 to use these gear sets in 2003-2006, see Tech Note 3. The 3.42 ratio was introduced for 2008. 4.56 ratio gear sets were only used in the Ram 2500 Power Wagon.

Tech Note 2: Genuine AAM
These are high quality, genuine American Axle Manufacturing Gear Sets. They will provide long and quiet service if properly installed. If you do not know how to set up your new gears to the factory specifications, find some one that does!

Tech Note 3: Differential Changes
AAM changed the differential after the 2006 model year. 2003-2006 3.73 and 4.10 ratio gear sets are not directly interchangeable with those found in 2007-2013.5 axles. AAM is no longer producing the early production gear sets, but you can use a new 2007-2013.5 gear set in your 2003-2006 axle if you ALSO replace your old differential with QU50729 diff.

Tech Note 4: Optional Parts 2007-2013.5
QU10945 Inner Axle Seals
QK4685 Inner Axle Seals with Installer
QK4879 Inner Axle Seals with Hub Bolt Set
QK4732 Axle Shaft Nut Set
TK4880 Master Diff Bearing and Seal Kit
A560882 Diff Bearing Kit
QK8013 Front Diff Installation Kit with Shims
QU50729 Loaded Open Diff Assembly for 3.42, 3.73, 4.10 ratios
QU11108 Ring Gear Bolt
QU10965 Diff Cover Gasket
QU10865 Pinion Seal
QK4883 Pinion Seal Kit
QU10862 Crush Sleeve
QU10863 Pinion Nut
QU11107 Pinion Depth Shim Kit
QT1816 Inner Pinion Bearing Cup Installer
QT1812 Outer Pinion Bearing Cup Installer
QT1074 Inner Pinion Bearing Installer
QT1100 Driver Handle

Applications:
Dodge Ram 3.73, 4.10 Ratio:
Ram 1500 Mega Cab (Must also replace your old differential with QU50729 diff): 2004, 2005, 2006
Ram 2500, Ram 3500 (Must also replace your old differential with QU50729 diff): 2003, 2004, 2005, 2006
Ram 1500 Mega Cab: 2007, 2008, 2009, 2010
Ram 2500, Ram 3500: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2013.5

Dodge Ram 3.42 Ratio:
Ram 1500 Mega Cab: 2008, 2009, 2010
Ram 2500, Ram 3500: 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018

Dodge Power Wagon:
Ram 2500 Power Wagon: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 23304907258

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Michelle
Carnegie, US
★★★★★ 5
Chromebook coverage.
EXCELLENT COVERAGE, hassle free, just had to return product for evaluation & decision. The only complaint I have is there was NO communication on the status of my returning the Chromebook for repair or replacement. I had to keep calling. I did get the full value of purchase on an Amazon gift card so I could buy another one for grandson’s school. Thank You SOOO MUCH ASURION, eternally grateful for your assistance! Will always purchase your coverage. MiMi
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Reviewed in the United States on June 5, 2026
T
Verified Purchase
Toveth Noyse
Dallas, US
★★★★★ 5
Received giftcard money to replace my plan-protected malfunctioning motherboard
I've been subscribing to the Asurion protection plan for a while. Recently, an Asus Prime PC motherboard I had bought a few months ago on Amazon stopped working well. I ended up considering filing a claim with Asurion to see if they would either fix/replace it or issue the purchase price money, so I could buy the failed electronics replacement component again for my custom-built PC. I went to the protection plan's website and started the claim filing process but couldn't find the category my failed component would be under in order to select it from the drop-down list. I ended up messaging the live customer service. The chat messaging was somewhat slow, the agent told me they were experiencing some communication delays throughout their systems. Ultimately, the agent was very kind and understanding, and completed the claim filing process for me on her side by asking me to provide the necessary info such as the item's product name, date of purchase, price before taxes, etc. I received a printable UPS shipping label in the email, printed it, and returned the item in the mail. Approximately 2 days later, I received an Amazon giftcard code in the email with the dollar amount equal to the item's price before the sales tax. Then I redeemed the giftcard code on the Amazon page and proceeded to apply the giftcard money to my next purchase of a replacement Asus prime motherboard, and it all worked out successfully. Therefore, I had no issues with the protection plan service and recommend it to others.
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Reviewed in the United States on May 24, 2026
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Verified Purchase
Steve
Whiting, US
★★★★★ 4
Fast and easy but I dont trust the process to be fully automated.
The process was very smooth and fairly quick. The only challenge I had was that the CLAIM status showed complete but I had to manually go look up the status. There was no email or notification it was closed. After manually checking the status, I called customer support and they said since I called in, they would process the payout. I wonder if I didnt call in if they would have processed it? Also, the phone rep said they would issue me a amazon egift card but then the next day I received a email saying they mailed out the payout. Very poor communication but so far the process was easy and fast.
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Reviewed in the United States on April 1, 2026
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Glen Armstrong
Charlottesville, US
★★★★★ 5
Good protection, easy process
First time filing a claim. Super easy and fast. Nice to have have protection and a smooth claims process when the unfortunate happens..
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Reviewed in the United States on April 25, 2026
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Verified Purchase
K. Shockley
San Leandro, US
★★★★★ 5
Ease of making a claim and quick return time for claim.
Very easy to work with.
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Reviewed in the United States on May 21, 2026

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