PT91C9 NATIONAL Rear Pinion Seal F350 F250 Ford

Review NATIONAL Rear Pinion Seal For Ford Super Duty for FORD F350 F250 2011–2020

Introducing the National PT91C9 Rear Pinion Seal, specifically designed for Ford F-350 and F-250 models produced between 2011 and 2020. This premium quality seal is an essential component of your vehicle's drivetrain system, guaranteeing optimal performance and longevity.

Manufactured by National Sealing Systems, a leading name in automotive sealing technology, this PT91C9 Rear Pinion Seal is engineered to provide a perfect fit and seamless operation. Its advanced design ensures that it effectively prevents oil leakage, maintaining the necessary lubrication to the pinion and wheel bearings for proper function.

Made from high-quality materials, this seal boasts exceptional resistance to wear and tear, ensuring a long service life. Its elastomeric properties enable it to endure the rigorous demands of heavy-duty applications, making it an excellent choice for your Ford F-350 or F-250.

Installing the National PT91C9 Rear Pinion Seal is a straightforward process, thanks to its precise dimensions and meticulous manufacturing. By replacing this critical seal with an authentic, OE-equivalent part, you'll not only restore the integrity of your drivetrain system, but also safeguard your vehicle's performance and fuel efficiency.

In summary, the National PT91C9 Rear Pinion Seal is an essential upgrade for your Ford F-350 or F-250, engineered to provide reliable, long-lasting performance. Trust National Sealing Systems to deliver a top-tier automotive component that exceeds your expectations.

title: Pros and Cons of Buying a National PT91C9 Rear Pinion Seal for 11-20 Ford F350 and F250

The National PT91C9 rear pinion seal is a common replacement option for Ford F350 and F250 models from 2011 to 2020. This part ensures the proper function of the differential by preventing oil leakage. In this discussion, we will weigh the pros and cons of purchasing this seal to help you make an informed decision.

1. OEM Equivalent: The National PT91C9 rear pinion seal is manufactured to meet the same specifications as the original factory part. Consequently, it offers a reliable and accurate fit, ensuring optimal performance and longevity.

2. Reduces Leaks: One of the primary reasons for seal replacement is to address persistent leaks. The National PT91C9 seal effectively seals the pinion shaft, preventing oil loss and ensuring that the differential remains properly lubricated.

3. Improved Durability: National Seals are known for their high-quality materials and advanced manufacturing processes. The PT91C9 seal is no exception, featuring a robust design that can withstand the demands of heavy-duty applications.

4. Cost-Effective: While the upfront cost of a National PT91C9 rear pinion seal may be higher than some aftermarket alternatives, its durability and reliable performance can save you money in the long run, as you won't need to replace it as frequently.

5. Easy Installation: The National PT91C9 rear pinion seal is designed to be installed with minimal effort, making it an attractive option for DIY enthusiasts or those who prefer not to pay for labor costs.

1. Upfront Cost: The National PT91C9 rear pinion seal may have a higher upfront cost compared to some aftermarket alternatives. However, the increased durability and reliability often outweigh the initial investment.

2. Availability: Depending on your location or the specific auto parts store, the National PT91C9 rear pinion seal may not always be readily available. It's essential to plan accordingly and research local suppliers or order online to ensure a timely delivery.

3. No Performance Upgrades: If you are seeking performance upgrades or modifications for your Ford F350 or F250, the National PT91C9 rear pinion seal does not offer any additional benefits in that regard. It is primarily designed for functionality and longevity.

The National PT91C9 rear pinion seal for 11-20 Ford F350 and F250 is a high-quality, reliable solution for addressing leaks and ensuring the proper function of your vehicle's differential. While it may have a higher upfront cost than some aftermarket alternatives, its durability, easy installation, and OEM-equivalent performance make it a worthwhile investment for those seeking a long-lasting solution.

If you are in the market for a rear pinion seal for your Ford F350 or F250 and prioritize reliability, durability, and a proper fit, the National PT91C9 rear pinion seal is an excellent choice. It may require some research to locate and securing one may take some time, but the peace of mind and improved performance it offers are well worth the effort.

Details:

Good low temperature capability. Low swell in hydrocarbon fluids. Delivers quality and reliable performance for every type of repair. Temperature range: -40 to 225 degrees Fahrenheit / 107 Celsius.

specifications differentialsdepo:

• for models: F350, F250
• for makes: Ford
• for years: 2011–2020
• brand: National
• mpn: Pt91c9
• part type: Pinion Seal
• placement on vehicle: Rear
• product warranty: 12 Month Warranty
• part info: Differential Pinion Seal With 10.5
• years: 2012 2019 2011 2013 2014 2015 2016 2017 2018 2020 12 19 11 13 14
• models: F350 Super Duty F250 Super Duty
• important: Please Read All Notes Before Making This Purchase
• cs-sku: 400

offer differentialsdepo:

• started: june 27, 2025
• availability: in stock
• prices: $18.40–$32.99
• item condition: New
• options: ship-to-home
• in stock #: 5
• sold #: 16

payments differentialsdepo:

• credit card: visa
• other
• wallet: google-pay

general differentialsdepo:

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

shipping differentialsdepo:

• class: standard
• service: fedex ground or fedex home delivery
• transit: 5-9 days
• carrier: fedex
• type: fixed

seller differentialsdepo:

• rating: 95.4%
• # reviews: 50219
• city: oakland, california

returns differentialsdepo:

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