QU50887 3.73 Ratio AAM Ring & Pinion Gear Set

QU50887 3.73 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 are genuine AAM original equipment gear sets.

Also See: QU50887U Used 3.73 Ratio Ring and Pinion Gear Set available while supplies last.

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
Applications

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