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Rear Differential Isolator - Mopar (5105309AB)
Rear Differential Isolator – Mopar (5105309AB)
The Mopar Rear Differential Isolator (5105309AB) is a Genuine OEM drivetrain mounting component engineered to reduce vibration and noise transfer between the rear differential assembly and the vehicle frame on compatible Chrysler, Dodge, Jeep, and Ram vehicles. This isolator plays a critical role in absorbing driveline movement and minimizing harshness during acceleration, deceleration, and road impact. Manufactured to strict Mopar factory specifications, it ensures precise fitment and long-term durability.
Constructed from high-density rubber bonded to reinforced steel mounting plates (application dependent), the rear differential isolator is designed to withstand continuous torque loads, drivetrain movement, and environmental exposure. The rubber compound is engineered to provide controlled flexibility while maintaining structural integrity under load. Bonded metal sleeves and brackets ensure secure attachment and proper alignment within the mounting assembly.
The 5105309AB rear differential isolator is developed as a vehicle-specific direct-fit component, matching original mounting dimensions, bolt hole spacing, and durometer (rubber stiffness) specifications. Maintaining OEM dimensional and material accuracy is essential to preserve proper differential alignment and vibration dampening characteristics. Aftermarket isolators that deviate from factory specifications may result in excessive driveline vibration or premature wear.
For professional technicians, installing a Genuine Mopar rear differential isolator ensures compliance with manufacturer drivetrain mounting standards during suspension or differential service procedures. For experienced DIY vehicle owners, selecting the OEM isolator eliminates compatibility uncertainty and restores factory-engineered vibration control without modification.
A properly functioning rear differential isolator supports smooth drivetrain operation, reduced cabin noise, and stable differential alignment. Replacing a worn or cracked isolator promptly helps prevent driveline vibration and protects surrounding mounting components.
• Genuine Mopar OEM rear differential isolator
• High-density rubber bonded to reinforced steel
• Designed for drivetrain vibration absorption
• Precision-matched mounting geometry
• Engineered for torque load durability
• Vehicle-specific direct-fit configuration
If you are restoring proper drivetrain isolation or replacing a deteriorated mounting component, the Mopar Rear Differential Isolator (5105309AB) delivers factory-accurate fitment, durable construction, and OEM-engineered vibration control reliability for your vehicle.
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Description
Rear Differential Isolator – Mopar (5105309AB)
The Mopar Rear Differential Isolator (5105309AB) is a Genuine OEM drivetrain mounting component engineered to reduce vibration and noise transfer between the rear differential assembly and the vehicle frame on compatible Chrysler, Dodge, Jeep, and Ram vehicles. This isolator plays a critical role in absorbing driveline movement and minimizing harshness during acceleration, deceleration, and road impact. Manufactured to strict Mopar factory specifications, it ensures precise fitment and long-term durability.
Constructed from high-density rubber bonded to reinforced steel mounting plates (application dependent), the rear differential isolator is designed to withstand continuous torque loads, drivetrain movement, and environmental exposure. The rubber compound is engineered to provide controlled flexibility while maintaining structural integrity under load. Bonded metal sleeves and brackets ensure secure attachment and proper alignment within the mounting assembly.
The 5105309AB rear differential isolator is developed as a vehicle-specific direct-fit component, matching original mounting dimensions, bolt hole spacing, and durometer (rubber stiffness) specifications. Maintaining OEM dimensional and material accuracy is essential to preserve proper differential alignment and vibration dampening characteristics. Aftermarket isolators that deviate from factory specifications may result in excessive driveline vibration or premature wear.
For professional technicians, installing a Genuine Mopar rear differential isolator ensures compliance with manufacturer drivetrain mounting standards during suspension or differential service procedures. For experienced DIY vehicle owners, selecting the OEM isolator eliminates compatibility uncertainty and restores factory-engineered vibration control without modification.
A properly functioning rear differential isolator supports smooth drivetrain operation, reduced cabin noise, and stable differential alignment. Replacing a worn or cracked isolator promptly helps prevent driveline vibration and protects surrounding mounting components.
• Genuine Mopar OEM rear differential isolator
• High-density rubber bonded to reinforced steel
• Designed for drivetrain vibration absorption
• Precision-matched mounting geometry
• Engineered for torque load durability
• Vehicle-specific direct-fit configuration
If you are restoring proper drivetrain isolation or replacing a deteriorated mounting component, the Mopar Rear Differential Isolator (5105309AB) delivers factory-accurate fitment, durable construction, and OEM-engineered vibration control reliability for your vehicle.
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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.