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American Axle & Manufacturing
AAM 40023039 Premium Ring & Pinion 3.73 10.5in 14-Bolt Dodge/Ram
$367.42
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SKU: 40023039
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- Description
- Fitment
- Warranty and Refund
- Reviews
Restore precise gear engagement and reliable power transfer with the American Axle & Manufacturing 40023039 ring and pinion set, engineered for the 10.5in 14-bolt rear axle found on 2003-2013 Dodge and Ram 1500 and 2500 trucks. This premium-grade set delivers a 3.73 gear ratio with a 41-tooth ring gear and 11-tooth pinion, matched to a 30-spline pinion for a factory-correct fit. Built for rear axle applications, it's designed to be a direct match for the demanding needs of Dodge/Ram truck drivetrains, whether towing, hauling, or daily driving. Backed by AAM's engineering heritage in axle components, this set arrives ready to install as a matched pair, helping ensure proper gear mesh and consistent noise levels. A straightforward, one-per-application part that simplifies your rear differential rebuild.
Notes
Ring and Pinion, Dodge/Ram 10.5 in. Axle, 3.73 Ratio 03-13
Features
- Premium-grade construction targets long-term gear mesh consistency for rear axle differentials.
- 3.73 ratio with 41-tooth ring and 11-tooth pinion matches factory Dodge/Ram 10.5in 14-bolt specs.
- 30-spline pinion design supports proper fitment with compatible 10.5in axle assemblies.
- Sold as a matched ring and pinion set, simplifying differential rebuild sourcing.
- Fits a broad range of 2003-2013 Dodge/Ram 1500 and 2500 engine configurations.
Application Summary
2003-2006, 2008-2009 Dodge Ram 2500 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS2006-2008 Dodge Ram 1500 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS
2007 Dodge Ram 2500 5.9L -CC 359CID L6 OHV 24 Valve Turbocharged DIESEL
2010 Dodge Ram 2500 6.7L -CC 408CID L6 OHV 24 Valve Turbocharged DIESEL
2011-2013 Ram 2500 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS
2012 Ram 1500 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS
Part Numbers: 40023039
Specifications
- Brand: American Axle & Manufacturing
- Part Number: 40023039
- Part Type: Differential Ring and Pinion
- GTIN: 00840382500602
- Package Dimensions: 8.0000 x 5.0000 x 18.0000 IN
- Package Weight: 24.8510 PG
- Package Quantity: 1 BX
- Cover Bolt Quantity: 14
- Gear Ratio: 3.73
- Grade Type: Premium
- Pinion Gear Tooth Quantity: 11
Warranty
- Warranty Type: Limited
- Warranty Duration: 1 Years
- Warranty Description: Limited, see demandaam.com
Returns
30-Day Money-Back Guarantee
We want you to be completely satisfied with your purchase! If you are not happy for any reason, you may return the item within 30 days for a refund, minus shipping fees, provided that: The part is brand new, uninstalled, and undamaged in any way.
To initiate a return, please contact us or email support@mizumoauto.com for a Return Authorization Number (RMA) and the return shipping address. Returns without an RMA number will be refused and returned to you at your expense.
Return Requirements:
- Items must be securely packed in the original manufacturer's packaging.
- All original materials must be included, such as hardware, manuals, protective caps, wrapping, and instructions.
- You must obtain and retain the tracking number for your return.
Non-Returnable Items:
- Piston rings, main bearings, and rod bearings are non-returnable if the manufacturer’s seal or shrink-wrapped plastic has been opened. No exceptions—this ensures the integrity of the parts you receive.
We are not responsible for lost or damaged returns. If your return is lost or damaged during shipping, a refund cannot be issued, as the item cannot be resold or returned to the supplier. Please file a claim directly with your shipping carrier for reimbursement.
Refunds are processed within 1-2 business days after we receive and inspect the returned item. Please allow this processing time before inquiring about your refund status.
Warranty
Mizumo Auto provides a 90-day Limited Warranty against defects in workmanship and materials under normal service conditions, effective from the original delivery date.
This warranty is non-transferable and applies only to the original purchaser. Coverage is limited to the replacement or refund of defective products.
Exclusions:
The warranty does not cover labor costs, damage resulting from accidents, misuse, alterations, or unauthorized modifications, as well as additional expenses such as towing, fluids, oils, car rentals, and any other parts not included in the original purchase.
Warranty Claims Process:
- All warranty claims must be pre-authorized and returned prepaid to Mizumo Auto for inspection and approval.
- No exchanges will be made for products that have been damaged, misused, or improperly installed. We strongly recommend professional installation.
- The buyer assumes all risk of damage resulting from improper installation.
All disputes related to transactions shall be resolved by a court of competent jurisdiction in Los Angeles County, California.
Shipping
We offer Free UPS Ground or USPS Ground Advantage shipping within the continental U.S. (48 states).
Shipping to Other Locations:
A delivery surcharge applies to shipments to: Alaska, Hawaii, Puerto Rico, U.S. territories, APO/FPO addresses, Canada, and international destinations.
Order Processing & Tracking:
- Orders are shipped Monday through Friday, excluding holidays.
- Orders placed before 3:00 PM PST will ship the same day, unless unexpected delays occur.
- A tracking number will be emailed within one business day after shipping.
If you do not receive a tracking number, please:
- Check your spam/junk folder.
- If it's not there, contact us via phone or eBay message for assistance.
International Orders:
Import duties, taxes, and brokerage fees are not included in the shipping fee. Please check with your shipping carrier and local customs office regarding any applicable fees before placing your order.