Do I need Left or Right side?
Pinion Nut - Mopar (6507901AA)
With Staked Pinion Nut.
Pinion Nut – Mopar (6507901AA)
The Mopar Pinion Nut (6507901AA) is a Genuine OEM drivetrain fastener engineered to secure the pinion gear to the driveshaft yoke within the differential assembly on compatible Chrysler, Dodge, Jeep, and Ram vehicles. This critical component maintains proper preload on the pinion bearings and ensures accurate gear alignment, which is essential for smooth power transfer and long-term drivetrain reliability. Manufactured to strict Mopar factory specifications, it ensures precise fitment and dependable performance.
Constructed from high-strength, heat-treated automotive-grade steel with corrosion-resistant coating (application dependent), the pinion nut is designed to withstand high torque loads, rotational forces, and continuous drivetrain stress. The precision-cut internal threads ensure accurate engagement with the pinion shaft, while the locking design (application dependent) helps maintain torque retention and prevent loosening under load.
The 6507901AA pinion nut is developed as an OEM-specific fastening component, matching original thread pitch, diameter, and strength requirements. Maintaining OEM specifications is critical in drivetrain applications, as incorrect fasteners may affect bearing preload, gear mesh, and overall differential performance.
For professional technicians, installing a Genuine Mopar pinion nut ensures compliance with manufacturer drivetrain assembly standards. Proper installation typically requires specific torque procedures and may involve crush sleeve adjustment or preload measurement. For this reason, replacement is generally recommended during differential service rather than reuse of the original nut.
A properly installed pinion nut supports accurate gear alignment, minimizes noise and vibration, and helps extend the life of differential components. Replacing a worn or previously torqued nut is essential for maintaining proper preload and safe operation.
• Genuine Mopar OEM pinion nut
• High-strength heat-treated steel construction
• Designed for high-torque drivetrain applications
• Precision-machined threads for accurate engagement
• Helps maintain proper pinion bearing preload
• Vehicle/application-specific fitment
If you are servicing the differential or replacing critical drivetrain components, the Mopar Pinion Nut (6507901AA) delivers factory-accurate fitment, durable construction, and OEM-engineered reliability for your vehicle.
- Min. 12 Months
- Safe, Secure Checkout
Product Details
Description
With Staked Pinion Nut.
Pinion Nut – Mopar (6507901AA)
The Mopar Pinion Nut (6507901AA) is a Genuine OEM drivetrain fastener engineered to secure the pinion gear to the driveshaft yoke within the differential assembly on compatible Chrysler, Dodge, Jeep, and Ram vehicles. This critical component maintains proper preload on the pinion bearings and ensures accurate gear alignment, which is essential for smooth power transfer and long-term drivetrain reliability. Manufactured to strict Mopar factory specifications, it ensures precise fitment and dependable performance.
Constructed from high-strength, heat-treated automotive-grade steel with corrosion-resistant coating (application dependent), the pinion nut is designed to withstand high torque loads, rotational forces, and continuous drivetrain stress. The precision-cut internal threads ensure accurate engagement with the pinion shaft, while the locking design (application dependent) helps maintain torque retention and prevent loosening under load.
The 6507901AA pinion nut is developed as an OEM-specific fastening component, matching original thread pitch, diameter, and strength requirements. Maintaining OEM specifications is critical in drivetrain applications, as incorrect fasteners may affect bearing preload, gear mesh, and overall differential performance.
For professional technicians, installing a Genuine Mopar pinion nut ensures compliance with manufacturer drivetrain assembly standards. Proper installation typically requires specific torque procedures and may involve crush sleeve adjustment or preload measurement. For this reason, replacement is generally recommended during differential service rather than reuse of the original nut.
A properly installed pinion nut supports accurate gear alignment, minimizes noise and vibration, and helps extend the life of differential components. Replacing a worn or previously torqued nut is essential for maintaining proper preload and safe operation.
• Genuine Mopar OEM pinion nut
• High-strength heat-treated steel construction
• Designed for high-torque drivetrain applications
• Precision-machined threads for accurate engagement
• Helps maintain proper pinion bearing preload
• Vehicle/application-specific fitment
If you are servicing the differential or replacing critical drivetrain components, the Mopar Pinion Nut (6507901AA) delivers factory-accurate fitment, durable construction, and OEM-engineered reliability for your vehicle.
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|---|---|---|---|
Shipping Policy
Shipping Time
Please allow 24-48 hours for us to process your order. Most in stock orders will arrive within 7-10 business days within the contiguous U.S. If we are out of stock of an item ordered we will order it from our distribution center warehouse which can add an additional 7-10 days to your delivery date. Parts that are on an excessive backorder of greater than 30 days will be noted on the product page itself. A product that is available for sale does not reflect our actual inventory as it’s constantly changing.
When a package is in transit, shipping times DO NOT include weekends. All orders are shipped complete.
Dynamic Shipping Cost Calculation
The shipping costs for orders are dynamically calculated when customers go through our checkout process. The calculation for shipping costs factor in the dimensions and weight of the products being purchased as well as the shipping destination and other shipping company-specific delivery options presented to the user when checking out.
UPS is our carrier of choice.
Refused Shipments
Freight charges incurred by the sender while attempting to deliver merchandise which is refused will be billed to the customer.
Core Charges
Customers are responsible for return shipping of a core if a core is required. Cores need to be sent back within their original packaging in order to be eligible for refund. Cores should be sent back to the address found on our contact us page. The package label should include “Core (your order number”
Canada & International Shipping
UPS is our carrier of choice. Shipping costs do not include duties, taxes or brokerage fees which will be due at the time of delivery. This amount is in addition to the shipping charges paid on your order.
Return Policy
- Contact us to arrange for any returns.
- A copy of the invoice will need to be included with the return.
- Parts must be resaleable and in the original packaging.
- We cannot take back used parts.
- We cannot take back installed or tried parts.
- Electrical parts are not returnable.
- We do reserve the right to refuse and return any parts we find have been installed, are used or do not meet the above criteria.
- Return request need to be within 30 days of receipt.
Vintage Parts
All sales are final for Vintage Parts, No returns can be accepted.
Cancellation Policy
- An order or a portion of an order may be cancelled up until the time it is shipped and no longer in our possession.
- If the cancelled part was special ordered from the manufacturer a return fee of 15% may apply.
Restocking Fees and Other Charges
Nope, Not here! We do not charge any re-stocking fees.
Mopar Original Parts is a factory-authorized source for genuine OEM Mopar parts and accessories covering Jeep, Ram, Dodge, and Chrysler. Whether you are replacing a Wrangler suspension component, a Ram 1500 brake assembly, or a Grand Cherokee sensor, every part we ship comes from dealership inventory with the manufacturer's warranty intact and is priced below MSRP. Use the vehicle selector to filter by year, model, and trim so you order the correct part the first time. Not sure which part number you need? Call us now and a parts specialist will verify fitment by VIN.