NATIONAL 710894 Mini Rear Crankshaft Seal 019826204448

( Brand: National ), ( Manufacturer Part Number: 710894 ), ( Product Type: Engine ), ( UPC: 019826204448 ), ( Fitment Type: Direct Replacement ), ( Partslink Number: Md101915, Md372251, Md120699, 04621939ab, 11111492244, 214433c700 ), ( Compatible Make S : Mini ), ( Product Subtype: Crankshafts ), ( Placement On Vehicle: Rear ), ( Type: Seals Gaskets ), ( Product Details: Engine Crankshaft Seal ), ( Department: Replacement )

Review NATIONAL Mini Rear Crankshaft Seal fits COOPER 2002–2006

The **National 710894 Rear Crankshaft Seal** is a precision-engineered, high-performance replacement part designed specifically for the **2002 2006 BMW Mini Cooper (R50/R52/R53/R55/R56/R57)** models, ensuring a reliable and long-lasting seal for the rear crankshaft area. Crafted from **high-quality nitrile rubber**, this seal is engineered to withstand the demanding conditions of modern automotive engines while maintaining optimal flexibility and durability. The **reinforced lip design** provides superior sealing performance, effectively preventing oil leaks and contamination that can compromise engine efficiency and longevity. This seal is meticulously manufactured to meet or exceed OEM specifications, ensuring a perfect fit with the Mini s intricate drivetrain components, including the differential housing and crankshaft flange. Its **smooth, low-friction surface** minimizes wear on the crankshaft, reducing the risk of premature failure and extending the service life of the entire drivetrain system. Whether addressing a leaking seal, preparing for routine maintenance, or upgrading during a rebuild, the **National 710894** offers a dependable solution that restores factory-level performance and reliability. Built to withstand high temperatures, pressure fluctuations, and exposure to engine fluids, this seal is an ideal choice for mechanics and DIY enthusiasts seeking a **direct-fit, long-lasting alternative** to aftermarket or generic replacements.

Buying the **National 710894 rear crankshaft seal** for a **2002 2006 Mini Cooper** has its advantages and disadvantages, depending on your priorities budget, quality, availability, and installation ease. Below is a detailed breakdown:

### **Pros of buying a National 710894 Seal**

1. **Affordability** This is one of the more budget-friendly options for a rear crankshaft seal, often priced significantly lower than OEM or high-end aftermarket alternatives. This makes it accessible for DIYers or those on a tight budget.

2. **Compatibility** The part is specifically designed for the **R56 Mini Cooper (2002 2006)**, ensuring a proper fit without modification. It s a direct replacement, which reduces the risk of sizing issues during installation.

3. **Widely Available** National is a well-known brand in the automotive aftermarket, and this part is commonly stocked by online retailers (e.g., RockAuto, Amazon, eBay) and local auto parts stores. This makes it easier to source quickly, even if you re not near a specialty Mini dealer.

4. **Decent Durability** While not OEM-grade, the National seal is made from materials that should hold up reasonably well for the average driver, especially if the engine is not heavily modified or subjected to extreme conditions.

5. **Easy Installation** The design is straightforward, and many DIYers report that it installs similarly to other aftermarket seals in this class. Proper lubrication and careful handling during installation can help extend its lifespan.

6. **Warranty Coverage** National typically offers a limited warranty (often 12 24 months), which provides some peace of mind in case of premature failure due to defects.

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### **Cons of buying a National 710894 Seal**

1. **Lower Quality Than OEM or Premium Brands** The National seal is not OEM (original equipment manufacturer) quality. While it may work fine for standard driving conditions, it may wear out faster than a higher-end aftermarket or genuine Mini seal, especially if the engine has high mileage or if oil changes are infrequent.

2. **Potential for Leaks Over Time** Cheaper seals can develop leaks sooner, particularly if the engine is hot or if the seal is not installed perfectly. This may require more frequent inspections or even a premature replacement.

3. **Limited Longevity Compared to Premium Seals** High-quality seals (e.g., Fel-Pro, Sealed Power, or OEM) are designed for longer service life and better resistance to heat and pressure. The National seal may not last as long, especially in high-performance or modified engines.

4. **Mixed Reviews on Fit and Finish** Some owners report that the seal may not seat as smoothly as OEM or premium alternatives, leading to potential oil leaks or difficulty during installation. This can be mitigated with proper tools (e.g., a seal installer) and patience.

5. **No Direct Support from Mini Dealers** Since this is an aftermarket part, Mini dealerships may not offer installation or warranty support, leaving you to rely on the manufacturer s warranty or your own mechanical skills.

6. **Risk of Counterfeit Parts** When purchasing online, there s a chance of receiving a counterfeit or low-quality replica, especially on platforms like eBay or Amazon. Always buy from reputable sellers with verified reviews to avoid this.

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### **Conclusion and Recommendation**

The **National 710894 rear crankshaft seal** is a **cost-effective, widely available option** for your 2002 2006 Mini Cooper, making it a practical choice for budget-conscious buyers or those who prioritize affordability over longevity. It s a solid **first-time replacement** if you re unsure about investing in a premium seal or if you plan to keep the car for a moderate period.

However, if you **plan to keep the car long-term, drive aggressively, or have a modified engine**, investing in a **higher-quality seal** (such as a **Fel-Pro, Sealed Power, or OEM replacement**) may be worth the extra cost. These seals typically last longer, leak less, and provide better overall reliability.

- **Choose the National 710894** if you want a **budget-friendly, easy-to-find option** for a short-term or standard-use vehicle.

- **Upgrade to a premium seal** (e.g., Fel-Pro 520-110 or equivalent) if you want **better longevity, fewer leaks, and peace of mind**, especially for high-mileage or modified engines.

- **Always follow proper installation procedures** (e.g., cleaning the crankshaft, using a seal installer, and ensuring the engine is cool) to maximize the seal s lifespan, regardless of brand.

For most casual drivers, the National seal is a **reasonable compromise**, but those who prioritize durability should consider spending a little more for a better-quality part.

Details:

The finest quality at a great price. Compatible with wide range of fluids. Specifications: Thickness: 0.295. width : 0.295.

Rear Crankshaft Seal 710894 by National. Designed utilizing the latest technology, this product by National features premium quality and will perform better than advertised. Inside Diameter: 3.583. Order from the comfort of your home or office.

Material: Polyacrylamide.

part #: 710894 prices

• $16.95-$36.92

specifications cranshafengin:

• for models: Cooper
• for years: 2002-2006
• brand: National
• mpn: 710894
• product type: Engine
• upc: 019826204448
• fitment type: Direct Replacement
• partslink number: Md101915, Md372251, Md120699, 04621939ab, 11111492244, 214433c700
• compatible make s : Mini
• product subtype: Crankshafts
• placement on vehicle: Rear
• type: Seals Gaskets
• product details: Engine Crankshaft Seal
• department: Replacement

offer cranshafengin:

• options: Ship-to-home
• quantity: 5
• started: April 29, 2026
• sold: 0
• availability: In Stock

shipping cranshafengin:

• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• transit: 2-5 Days
• class: Standard
• type: Calculated
• cost: $19.00

payments cranshafengin:

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

returns cranshafengin:

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

seller cranshafengin:

• # reviews: 156871
• city: Saint Paul, Minnesota
• rating: 99.2%

general cranshafengin:

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

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