What are the key features of the Yukon 38 Spline Axle Upgrade 03-12 Dodge Ram 2500 / 3500 AAM 11.5"?

Cut-to-length design for custom fitment; 1541H alloy construction for added strength over stock; Also available in 4340 chromoly with lifetime warranty; Compatible Grizzly Locker features forged case and 8620 internals; Patent-pending locker design reduces common locker failures

What are the specifications of the Yukon 38 Spline Axle Upgrade 03-12 Dodge Ram 2500 / 3500 AAM 11.5"?

38 spline; 1.625" shaft diameter (vs 1.550" stock); Length range 36.4" to 40.1"; 11.5" ring gear diameter; 12 ring gear bolts; 14 cover bolts; 8 axle lugs; One year warranty (1541H alloy)

Are there any important fitment notes for the Yukon 38 Spline Axle Upgrade 03-12 Dodge Ram 2500 / 3500 AAM 11.5"?

Axles are sold as a pair and require a 38 spline carrier/locker; the locker requires a 38 spline axle shaft. This is not a bolt-on kit — professional installation is recommended.

SKU #: YUK-YA C11.5-38-40 (x2) MPN #: YA C11.5-38-40 (x2)

Yukon 38 Spline Axle Upgrade 03-12 Dodge Ram 2500 / 3500 AAM 11.5"

$733.78

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Yukon 38 Spline Axle Upgrade 03 12 Dodge Ram 2500 / 3500 AAM 11.5"

Description Overview

So, you're hard on your truck, we're okay with that, so are we! And that's why we recommend running the Yukon Gear & Axle 38 spline upgraded axle shafts and compatible Grizzly Locker. We've ran this setup in everything from sledpullers, to drag racers, to high speed off-road, and even to daily drivers, and it WILL NOT FAIL! This combination from Yukon Gear and Axle upgrades your current 30 spline to MASSIVE 38 spline axle shafts for your 2003 to 2012 Dodge with AAM 11.5" rear differential. This project requires you to upgrade the carrier to 38 spline Yukon Grizzly Locker on top of the axle. It will not work without the larger carrier. 38 spline upgraded cut to length axle for 10.5" & 11.5" Dodge rear. This cut to length axle will accommodate applications from 36.4" to 40.1". Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H axles come with a one year warranty against manufacturing defects. This kit is also available in 4340 chromoly with a LIFETIME warranty! 11.5AAM , 38Spline , GM DODGE GRIZZLY LOCKER . The Yukon Grizzly Locker is a mechanical locking differential. It features a forged case and 8620 internals for maximum strength. It's patent pending design reduces common locker failures. All units assembled in the USA! Ring Gear Diameter: 11.5 Ring Gear Bolts: 12 Cover Bolts: 14 Carrier Breaks: none Spline Count: 30 Pinion Support: False Float: FF Axle Lugs: 8 Installation Yukon's 38 spline axles are larger diameter than stock, 1.625" in diameter to 1.550" diameter stock shafts. This upgrade requires boaring of spindles and a new 38 spline differential is needed to upgrade axles. This is not a bolt on kit. Please have a professional mechanic install it if you do not know what you are doing. Important Notes: Axles are sold as a pair and require a 38 Spline Carrier/Locker. Locker requires 38 Spline Axle Shaft. Please verify your correct differential application before ordering Axle Shafts.

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A pair of Yukon 38 spline upgraded cut-to-length axle shafts for AAM 11.5" rear differentials, offering a strength increase over stock 30 spline shafts.

Fits: 2003-2012 Dodge Ram 2500 / 3500 4x4
Brand: Yukon Gear & Axle
Best for: Upgrading stock 30 spline rear axles to a stronger 38 spline setup
Key features: Cut-to-length design for custom fitment
1541H alloy construction for added strength over stock
Also available in 4340 chromoly with lifetime warranty
Compatible Grizzly Locker features forged case and 8620 internals
Patent-pending locker design reduces common locker failures
Key specs: 38 spline
1.625" shaft diameter (vs 1.550" stock)
Length range 36.4" to 40.1"
11.5" ring gear diameter
12 ring gear bolts
14 cover bolts
8 axle lugs
One year warranty (1541H alloy)
Important: Axles are sold as a pair and require a 38 spline carrier/locker; the locker requires a 38 spline axle shaft. This is not a bolt-on kit — professional installation is recommended.

Summarized by AI from this product’s description and specs. Confirm fitment for your year, make and engine before ordering.

So, you're hard on your truck, we're okay with that, so are we! And that's why we recommend running the Yukon Gear & Axle 38 spline upgraded axle shafts and compatible Grizzly Locker. We've ran this setup in everything from sledpullers, to drag racers, to high speed off-road, and even to daily drivers, and it WILL NOT FAIL! This combination from Yukon Gear and Axle upgrades your current 30 spline to MASSIVE 38 spline axle shafts for your 2003 to 2012 Dodge with AAM 11.5" rear differential. This project requires you to upgrade the carrier to 38 spline Yukon Grizzly Locker on top of the axle. It will not work without the larger carrier.

38 spline upgraded cut to length axle for 10.5" & 11.5" Dodge rear. This cut to length axle will accommodate applications from 36.4" to 40.1". Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H axles come with a one year warranty against manufacturing defects. This kit is also available in 4340 chromoly with a LIFETIME warranty!

11.5AAM , 38Spline , GM DODGE GRIZZLY LOCKER . The Yukon Grizzly Locker is a mechanical locking differential. It features a forged case and 8620 internals for maximum strength. It's patent pending design reduces common locker failures. All units assembled in the USA!

Ring Gear Diameter:	11.5
Ring Gear Bolts:	12
Cover Bolts:	14
Carrier Breaks:	none
Spline Count:	30
Pinion Support:	False
Float:	FF
Axle Lugs:	8

Installation
Yukon's 38 spline axles are larger diameter than stock, 1.625" in diameter to 1.550" diameter stock shafts. This upgrade requires boaring of spindles and a new 38 spline differential is needed to upgrade axles. This is not a bolt on kit. Please have a professional mechanic install it if you do not know what you are doing.

Important Notes:

Axles are sold as a pair and require a 38 Spline Carrier/Locker.
Locker requires 38 Spline Axle Shaft.

Please verify your correct differential application before ordering Axle Shafts.

Vehicle Fitment

2003-2012 Dodge Ram 2500 / 3500 4x4

WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov

Applications
Chrysler 11.5"

Ram 2500 3/4 Ton: 2003 - 2012 (Rear)
Ram 3500 1 Ton: 2003 - 2012 (Rear)

About Yukon Gear & Axle

Yukon Gear & Axle's mission is to build quality parts that exceed expectation. Its that simple! Their in-house engineering group utilizes state-of-the-art software to design product thats then manufactured in partnership by some of the worlds foremost leaders in OEM manufacturing. Whether you're in need of a ring and pinion set to regear your truck after installing larger tires, a locker to aid in traction, or a set of chromoly axle shafts, Yukon's got you and your rig covered.