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What rear and what locker are in the new HD's

2021 HD
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64BAwagon Senior Enthusiast

64BAwagon

Posted
Posted

I cant say for sure if the Locker is still the Eaton G80 but the entire assembly is still made by American axle and many members here have reported them as low on fluid when new. 

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newdude Senior Enthusiast

newdude

Posted
Posted
12 hours ago, 2021 HD said:

What is chevy using now for rears in the 2020 and up trucks. Also what locker are they using? Is it still the G80? Thanks

 

 

All gas use the 11.5" AAM axle, 3.73 ring gear.

 

Diesel 3/4 ton use the 11.5" AAM axle, 3.42 ring gear.

 

All diesel 1 ton use the 12.0" AAM axle, 3.42 gear.  This axle first showed up in Ram spec for the Ram HD in 2019.  AAM is the supplier for Ram HD since 2003.  

 

Locker is the Eaton G80.  

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newdude Senior Enthusiast

newdude

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Posted
3 hours ago, SoCal Angler said:

My 2023 6.6L GAS/6 speed auto....has an auto locker 3.73:1...

What axle would it have?

How can I verify?

 

 

Did you browse past post #4?

 

Here's a recap just in case:

 

All gas use the 11.5" AAM axle, 3.73 ring gear.

 

Diesel 3/4 ton use the 11.5" AAM axle, 3.42 ring gear.

 

All diesel 1 ton use the 12.0" AAM axle, 3.42 gear.  This axle first showed up in Ram spec for the Ram HD in 2019.  AAM is the supplier for Ram HD since 2003.  

 

Locker is the Eaton G80.  

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SoCal Angler Enthusiast

SoCal Angler

Posted
Posted
23 hours ago, Pryme said:

It was just stated above. Your truck has an American axle manufacturing 11.5” with the G80 locker. 

 

My bad....looked right past it!  Thanks!

 

 

21 hours ago, newdude said:

 

 

Did you browse past post #4?

 

Here's a recap just in case:

 

All gas use the 11.5" AAM axle, 3.73 ring gear.

 

Diesel 3/4 ton use the 11.5" AAM axle, 3.42 ring gear.

 

All diesel 1 ton use the 12.0" AAM axle, 3.42 gear.  This axle first showed up in Ram spec for the Ram HD in 2019.  AAM is the supplier for Ram HD since 2003.  

 

Locker is the Eaton G80.  

 

 My bad....looked right past it!  Thanks!

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redwngr Senior Enthusiast

redwngr

Posted
Posted (edited)

Rpo codes ... 

 

Order guide shows G80 is standard on all except the ZR2 and AT4X

image.png.1d24a9f109f70cc744df9aac7eaf10e6.png

 

Gas gets 3.73

Dmax gets 3.42

image.png.93dfad6924a8988b1bdc2538e44976c5.png

 

 

 

ZR2 and AT4X also get the a DSSV suspension package (RPO code ZRX)

image.thumb.png.b41e29a615eab133e2ae48650421fd12.png

 

 

3500's don't get the AT4X or ZR2 trim levels (and AT4 doesn't get the AT4X goodies)

 

Edited by redwngr
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