NATIONAL 710901 Rear Crankshaft Seal 019826204585

( Brand: National ), ( Manufacturer Part Number: 710901 ), ( Product Type: Engine ), ( UPC: 019826204585 ), ( Fitment Type: Direct Replacement ), ( Partslink Number: 3c346701ca, 3c3z6701a, 3c3z6701aa, 1834635c91, 3c3z6701b ), ( Compatible Model S : Excursion, E-350 Super Duty, E-450 Super Duty, E-350 Club Wagon ), ( Product Subtype: Crankshafts ), ( Placement On Vehicle: Rear ), ( Type: Seals Gaskets ), ( Product Details: Engine Crankshaft Seal ), ( Engine Version: 6.0l Power-stroke V8 ), ( Department: Replacement )

Review NATIONAL Ford Rear Crankshaft Seal fits EXCURSION 2003–2005

The **National 710901 Rear Crankshaft Seal** is a high-performance, precision-engineered replacement part specifically designed to restore sealing integrity and prevent oil leaks in the rear main housing of Ford Excursion models from 2003 to 2005. Crafted from durable **nitrile rubber**, this seal features a robust, reinforced lip construction that ensures a tight, long-lasting seal against the crankshaft s rotating surface, mitigating the risk of costly oil contamination and engine damage. Engineered to meet or exceed OEM specifications, the seal incorporates a **metal-reinforced backing plate** for enhanced durability and resistance to oil degradation, making it ideal for high-mileage vehicles or those operating under demanding conditions. Its **smooth, low-friction design** minimizes wear on the crankshaft, reducing the likelihood of premature failure while maintaining optimal sealing performance even under fluctuating temperatures. The seal s **precise fit** is achieved through careful attention to dimensional tolerances, ensuring compatibility with the Excursion s rear main housing without requiring excessive modification or gasket sealers. Whether addressing a persistent oil leak, completing a rear main service, or upgrading during a transmission or differential overhaul, this National seal delivers reliable protection, helping to extend the lifespan of your engine and maintain peak performance. Built to withstand the rigors of heavy-duty use, it stands as a trusted choice for mechanics and enthusiasts seeking a dependable, long-term solution.

### **Pros and Cons of buying a National 710901 Rear Crankshaft Seal for a 2003-2005 Ford Excursion**

1. **Direct Fitment** The National 710901 is specifically designed for the 2003-2005 Ford Excursion, ensuring compatibility with the vehicle s drivetrain and mounting points.

2. **High-Quality Materials** National is a reputable brand known for using durable materials, including reinforced rubber and corrosion-resistant coatings, which can extend the seal s lifespan.

3. **Proper Sealing Performance** The seal is engineered to prevent oil leaks at the rear main bearing, reducing the risk of engine damage from contamination.

4. **Ease of Installation** Many users report that the seal is straightforward to install, especially with the right tools (e.g., seal driver, torque wrench, and proper alignment guides).

5. **Warranty Coverage** National typically offers a warranty (varies by retailer), providing some assurance against premature failure due to manufacturing defects.

6. **Cost-Effective Alternative** Compared to OEM seals, this aftermarket option is often more affordable while maintaining reliability.

7. **Positive User Feedback** Many Ford Excursion owners have reported success with this seal, citing fewer leaks and longer service life than generic or lower-quality alternatives.

1. **Potential Counterfeit Risks** Some sellers may offer fake or low-quality replicas under the National brand name, leading to premature failure or improper fitment.

2. **Installation Challenges** If not installed correctly, the seal can leak or fail prematurely. Improper torque on bolts or misalignment can cause damage to the seal or surrounding components.

3. **Limited Availability** Depending on the region, this part may not be as widely stocked as OEM options, requiring special ordering or online purchases.

4. **Mixed Durability Reports** While many users have positive experiences, a small percentage report that the seal fails sooner than expected, particularly in high-mileage or heavily modified vehicles.

5. **Compatibility with Modifications** If the Excursion has aftermarket modifications (e.g., performance upgrades, custom exhausts, or suspension changes), the seal may not fit perfectly, requiring additional adjustments.

6. **Price Variability** Prices can fluctuate based on the seller, with some offering significantly higher or lower rates than average, potentially indicating quality differences.

---

### **Conclusion**

The **National 710901 rear crankshaft seal** is a strong aftermarket option for the 2003-2005 Ford Excursion, offering a balance of affordability, reliability, and ease of installation. It is widely trusted by owners for its direct fitment and durability, though caution is needed to avoid counterfeit products. Proper installation is critical to maximizing its lifespan, and users should verify the seal s authenticity before purchase.

For those seeking a cost-effective, high-quality replacement, this seal is a **recommended choice**, provided it is sourced from a trusted retailer (e.g., RockAuto, Amazon, or a local Ford specialty shop). If budget allows, pairing it with a professional installation ensures optimal performance.

Buy the **National 710901** from a reputable seller, verify its authenticity, and follow the manufacturer s installation guidelines or seek professional help if unsure. This seal is a reliable upgrade for preventing rear main seal leaks in your Excursion.

Details:

Designed utilizing the latest technology, this product by National features premium quality and will perform better than advertised. Order from the comfort of your home or office. Material: PTFE . Specifications: Thickness: 0.750.

Compatible with wide range of fluids. Rear Crankshaft Seal 710901 by National. Inside Diameter: 4.646. width : 0.750.

The finest quality at a great price.

part #: 710901 prices

• $40.99-$121.31

specifications cranshafengin:

• for models: Excursion
• for makes: Ford
• for years: 2003-2005
• brand: National
• mpn: 710901
• product type: Engine
• upc: 019826204585
• fitment type: Direct Replacement
• partslink number: 3c346701ca, 3c3z6701a, 3c3z6701aa, 1834635c91, 3c3z6701b
• compatible model s : Excursion, E-350 Super Duty, E-450 Super Duty, E-350 Club Wagon
• product subtype: Crankshafts
• placement on vehicle: Rear
• type: Seals Gaskets
• product details: Engine Crankshaft Seal
• engine version: 6.0l Power-stroke V8
• department: Replacement

shipping cranshafengin:

• transit: 4-7 Days
• carrier: FedEx
• cost: $19.73
• type: Calculated
• service: FedEx Ground / FedEx Home Delivery
• class: Standard

seller cranshafengin:

• city: Fort Smith, Arkansas
• # reviews: 157997
• rating: 99.2%

general cranshafengin:

• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
• condition: New

returns cranshafengin:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

payments cranshafengin:

• other
• credit card: Visa
• wallet: Apple-pay

offer cranshafengin:

• started: May 8, 2026
• options: Ship-to-home
• quantity: 5
• availability: In Stock
• sold: 0

National 710901 Is Similar To:

• 1021v National Rear Engine Crankshaft 614046153431 (43.5% similar) Out of the seal and other wheel-end components. Don't just repair a leak, prevent future problems with National oil seal...(October 10th, 2017)
• 224660 National Bearings Oil Seal 724956233557 (34.2% similar) Standard size excellent resistance to petroleum-based oils and fuels, water alcohol good acids bases, except those with a strong oxidizing effect temperature range: -40. C manufacturer federal-mogul brand National bearings model NUMBER224660 upc: 57 weight. Our satisfaction guarantee all of products...(January 24th, 2018)
• 229005 National New Engine Crankshaft 724956076116 (43.5% similar) Multi purpose seal. Provides good low temperature capability. Footnote: counter-clockwise-spiral lip design. Design type: spring loaded multi-lip. Delivers quality and reliable performance for every type of repair. Low swell in hydrocarbon fluids. Vehicles sold outside of the USA may be different, ...(October 3rd, 2017)
• 229010 National Rear Inner Wheel 724956076123 (30.9% similar) 335 width mm: this part is engineered to meet OE specs perfectly fit your vehicle. This innovation aggressively deflects dirt, liquid, and other contaminants that can lead to premature seal bearing damage diminished wheel-end performance. Design type: spring loaded multi-lip good dry heat ...(November 10th, 2017)
• 2377 National New Engine Crankshaft 724956077168 (44.2% similar) Design type: spring loaded multi-lip. Shipping labels may only be applied to a separate, outer box. Delivers quality and reliable performance for every type of repair. Temperature range: 40 deg f to 225 c 107. Multi purpose seal. Material: floury-elastic. Vehicles sold outside of the USA may be ...(October 14th, 2017)
• 239155 National Oil Seals Seal (31.6% similar) ...(July 20th, 2018)
• 2692 National New Engine Crankshaft 724956084043 (44.2% similar) Provides good low temperature capability. Low swell in hydrocarbon fluids. Multi purpose seal. Material: polyacrylamide. Design type: spring loaded multi-lip. Delivers quality and reliable performance for every type of repair. Series: 2000 . Temperature range: 40 deg f to 225 c 107. Footnote: ...(October 14th, 2017)
• 2942 National New Engine Crankshaft 724956085637 (44.2% similar) Delivers quality and reliable performance for every type of repair. Multi purpose seal. Vehicles sold outside of the USA may be different, even if they have same make and model name. Temperature range: 40 deg f to 225 c 107. Footnote: clockwise-spiral lip design. Design type: spring loaded multi-lip...(October 14th, 2017)
• 355660h National Oil Seals Seal 614046236912 (27.5% similar) ...(July 20th, 2018)
• 450867 National Seal 724956132119 (26.5% similar) 437 width mm: 11. Design type: spring loaded single-lip provides good low temperature capability swell in hydrocarbon fluids range: 40F to 225F 40C 107C engineered for performance, National oil seals deliver superior protection and long service life thanks premium material construction a patent-...(November 10th, 2017)
• 452261h National New Engine Crankshaft 724956234387 (43.1% similar) Temperature range: 40 deg f to 225 c 107. Housing bore inch: design type: spring loaded multi-lip. Provides good low temperature capability. Shipping labels may only be applied to a separate, outer box. Multi purpose seal. Vehicles sold outside of the USA may be different, even if they have same ...(October 13th, 2017)