5th Gear Lock Nut Retainer Kit For Dodge Ram 2500/3500 Cummins NV4500 1994-2005 5013887AA

Shipping calculated at checkout.
【Fits for】: (OEM# 5013887AA) Fits for 1995 – 2005 Dodge Ram 2500 and 3500 with NV4500 transmissions (5.9L and 6.7L). Only fits 29-spline output shafts (Dodge 4wd models), does not work with GM/Cheverolet NV4500 transmissions.
【Function】: The lock nut will vibrate loose over time and allow the 5th-gear assembly to work its way off the splines of the shaft and no longer mesh with the companion gear. Our TUNTUN Splined lock nut set prevents and repairs the common issue of the NV4500 5th gear nut backing off of the shaft, causing failure. Retain factory main shaft lock nut fitment
【Features】: Easy installation without removing, or disassembling the transmission assembly. Direct replacement and Perfect fit. Our TUNTUN Lock Nut Retainer Set is a perfect replacement, made of high-strength steel and CNC constructed with computer programmed pulse welds to ensure high performance and long service life
【Package Including】: 2x Set Screws, 2x Brass Pucks, 1x 5th Gear Nut, 1x Spring Washer, 1x 5th Gear Lock Nut Retainer as pictured.
【Our Warranty】: Lifetime warranty service. All products have been 100% tested before delivery and guarantee to offer true worry-free shopping experience
-No need to purchase a mainshaft update kit.
-No special tools needed, just index the retainer on the spline and into your existing locknut.
-Ensures that the fifth gear isn't lost.
-Helps to keep the transmission running smoothly.
Fit for Dodge 1994 - 2005 for Ram 2500 and 3500 4WD with NV4500 transmissions (5.9L and 6.7L)
2x Set Screws 
2x Brass Pucks
1x 5th Gear Nut
1x Spring Washer
1x 5th Gear Lock Nut Retainer
Shipping & Returns


At egrperformance, we strive for your complete satisfaction with every purchase. If you are not entirely satisfied, you may return any unused product within 45 days of the delivery date for a full refund. Kindly ensure that the item remains in the same condition as when you initially received it.

To facilitate a seamless return process, kindly adhere to the following guidelines:

1. Original Packaging: Ensure returned items are enclosed in their original packaging, including all boxes, plastic containers, bags, and equivalent protective materials.

2. Undamaged Condition: We cannot accept original packaging that has been damaged, as these items are no longer considered new.

3. Tags and Additional Components: The original packaging must also include all tags, information booklets, instructions, stickers, etc. For apparel, please ensure tags remain attached.

4. Secure Packing: Pack your returns firmly to prevent any damage in transit.  If we receive a damaged item, we cannot determine the cause of the damage and will not accept it as a return.5. Shipping Container: Avoid using the item's original packaging as the shipping container. Instead, place items in the original packaging inside a larger, separate shipping box. We recommend reusing the box your items were initially shipped in.6. Necessary Information: Remember to include the original invoice or other essential contact information with your return.7. Confirmation Process: Before returning items, make sure all return conditions are met. Take photos or videos and send them to our customer service team for confirmation. Once approved, ship the products promptly and provide our team with a valid tracking number. We will process the refund within three working days after receiving the item, we will not deduct any fees, full refund, The refund is expected to arrive within 1 working day after the refund is processed.



Please make sure to include a note with your order number (e.g., KE-XXXX) inside the package before sending it for delivery.



For a quicker exchange process, we recommend returning the item you wish to exchange and then placing a separate order for the desired new item..

Shipping Fee

If you want to return or exchange an item with no quality issues, you will be responsible for paying the return shipping fee. Please note, if the purchased part does not fit due to failure in checking the Fitment information carefully, you will also bear the cost of return shipping. We do not charge for re listing fees. However, if we provide incorrect Fitment information, we will bear the cost.

Product Issues

If you receive an incorrect item or the product has quality issues, we will process exchange or return requests within 3 business days. Since it is our fault, we will bear the cost of returning the goods. However, please follow the return standards to ensure that the items are in new condition and do not affect their resale.

Out-of-Stock Items

In case the product you ordered cannot be delivered on time due to inventory shortages, we will contact you via email. You may choose to wait for the stock to arrive or request a refund.

In case your specific situation falls outside the scope of the policy mentioned above, please do not hesitate to contact us. We will make every effort to support you in resolving the issue.