722250 NATIONAL Differential Pinion Seal Rear

Review NATIONAL Differential Pinion Seal Rear

The National 722250 Differential Pinion Seal Rear is an essential component in the rear differential assembly of various automobiles. This seal plays a crucial role in preventing the loss of gear oil, thus ensuring the smooth operation of the differential gears.

This high-quality pinion seal is meticulously engineered to provide optimal performance and durability. It is designed to fit specifically in the rear differential of certain vehicle makes and models, making it a reliable replacement option for worn-out or damaged seals.

The National 722250 Differential Pinion Seal Rear is manufactured using premium materials that offer superior resistance to wear, tear, and heat. The elastomeric material of the seal is carefully formulated to maintain its flexibility even under extreme temperatures and heavy loads, ensuring a tight seal and preventing oil leaks.

The pinion seal features a precise fitment design, ensuring a secure installation in the differential housing. Its double-lip design provides an additional layer of protection against oil leakage, making it a popular choice among vehicle owners and mechanics.

Installation of the National 722250 Differential Pinion Seal Rear is relatively straightforward. It comes with detailed instructions to guide users through the process. However, it is recommended to consult a professional mechanic for the installation to ensure proper alignment and seating of the new seal.

By choosing the National 722250 Differential Pinion Seal Rear, you are investing in a reliable and effective solution to maintain the performance and longevity of your vehicle's differential system. This seal is a must-have for any vehicle owner seeking to prevent costly repairs and ensure the smooth operation of their automobile.

Buying a national 722250 differential pinion seal for the rear end of a vehicle can be a necessary repair for maintaining the proper function and sealing of the differential unit. However, like any automotive part replacement, it comes with its own set of advantages and disadvantages.

1. Improved Differential Performance: A new pinion seal can help prevent leaks, which can lead to improved differential performance and longevity. A leaking differential can cause damage to other components, leading to costly repairs down the line.

2. Smoother Driving Experience: A properly sealed differential can result in a smoother driving experience. A leaking differential can cause vibrations and noise, which can be uncomfortable and potentially dangerous.

3. Peace of Mind: Knowing that your differential is properly sealed and functioning can provide peace of mind and confidence in the reliability of your vehicle.

1. Cost: The cost of a new pinion seal can vary depending on the make and model of the vehicle. It is important to consider the cost of the part itself, as well as any labor costs associated with the repair.

2. Installation Complexity: The installation of a differential pinion seal can be a complex process, and it is recommended that the repair be performed by a professional mechanic. This can add to the overall cost of the repair.

3. Potential for Additional Damage: During the removal and installation of the pinion seal, there is a risk of causing additional damage to the differential or other components. It is important to ensure that the repair is performed by a qualified and experienced mechanic to minimize the risk of further damage.

Replacing a differential pinion seal is an important repair that can help prevent costly damage to other components and improve the overall performance and reliability of your vehicle. However, it comes with its own set of advantages and disadvantages, including the cost, complexity of installation, and potential for additional damage. It is recommended that the repair be performed by a qualified and experienced mechanic to minimize the risks and ensure a successful repair.

If you are experiencing differential leaks or notice unusual vibrations or noises coming from your vehicle, it is important to have the issue diagnosed and addressed by a qualified mechanic as soon as possible. A new pinion seal may be the solution to improve the performance and reliability of your vehicle and provide peace of mind. Be sure to research the cost of the part and labor, and choose a reputable and experienced mechanic to perform the repair to minimize the risks and ensure a successful outcome.

Details:

Shipping:: free shipping is for continental USA only. If any manufacturer warranty exists, it is between you and them. Sometimes the fitment is so old that it does not take into account trim, engine size or build dates. They may have been in storage anywhere from 1-30 years.

There may be minor corrosion, scuffs, torn or missing boxes, scratches from storage, etc. National part number 722250. Be sure the part you are buying is correct for your application. Rubber parts, gaskets, hardware may need to be replaced and not usable.

Once purchased you own it. None of which makes the part defective. Or any other minor issue that does not make the part you are buying defective.

specifications differentialsdepo:

• brand: National
• mpn: 722250
• part type: Pinion Seal
• placement on vehicle: Rear

payments differentialsdepo:

• wallet: apple-pay
• other
• credit card: diners-club

offer differentialsdepo:

• options: ship-to-home
• in stock #: 3
• sold #: 9
• availability: in stock
• started: january 21, 2026
• prices: $42.35–$129.23
• item condition: New

seller differentialsdepo:

• # reviews: 265278
• city: houston, texas
• rating: 99.6%

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional

returns differentialsdepo:

• policy: returns accepted
• time: 30 days
• paid by: seller

shipping differentialsdepo:

• type: fixed
• service: standard
• transit: 3-8 days
• class: standard