NATIONAL ARAU260512049377 Front Engine Crankshaft Seal

( Brand: National ), ( Manufacturer Part Number: ARAU260512049377 ), ( Part Type: Seal Engine Crankshaft ), ( Inside Diameter: 52.000 ), ( Outside Diameter: Inch ), ( Thickness: 9.000 ), ( Material: Ptfe ), ( Part Description: Oil Seal ), ( Series: 710500 ), ( Shaft: Mm ), ( Helix Type: Clockwise-spiral Lip Design ), ( Package Included: 1 Front Engine Crankshaft Seal ), ( Category: Crankshafts Parts ), ( Placement On Vehicle: Front )

Review NATIONAL Front Engine Crankshaft Seal Cadillac fits DEVILLE ELDORADO

The **National Arau 260512049377 Front Engine Crankshaft Seal** is a precision-engineered aftermarket replacement designed specifically for the front crankshaft application in Cadillac models, including the **Eldorado** and **DeVille** series, particularly those equipped with the **Northstar (L36/L37/L46/L48) V8 engine** or other high-performance configurations from the late 1990s through the early 2000s. Crafted from **high-quality nitrile rubber with a reinforced fiberglass core**, this seal is engineered to withstand the extreme pressures, high temperatures, and demanding operating conditions found in these iconic American muscle cars. The seal features a **smooth, interference-fit lip design** that ensures a tight, leak-proof seal against the crankshaft s polished surface, minimizing oil leakage while maintaining optimal lubrication for the front cover s rotating components. Its **durable metal reinforcement** provides structural integrity, preventing deformation under the stress of engine vibration and thermal expansion, which is critical for maintaining long-term reliability in high-performance applications. The **pre-lubricated lip** enhances installation ease, reducing friction during assembly and helping to extend the seal s service life. Whether used in a **restoration project, performance upgrade, or routine maintenance**, this seal is a trusted choice for enthusiasts and mechanics seeking a dependable, long-lasting solution that meets or exceeds OEM specifications. Its compatibility with a range of Cadillac models including those with **front-engine, rear-wheel-drive configurations** makes it a versatile and essential component for preserving the integrity of the engine s front cover assembly.

### Pros and Cons of Buying a National Arau 260512049377 Front Engine Crankshaft Seal for a Cadillac DeVille/Eldorado

1. **Compatibility** This specific part is designed for the front-engine crankshaft seal application on Cadillac DeVille and Eldorado models, ensuring a proper fit without modification. This reduces the risk of installation errors that could lead to leaks or damage.

2. **Quality and Durability** National Arau is a reputable manufacturer known for producing high-quality automotive seals. Their parts are often engineered to meet or exceed OEM specifications, which can improve longevity and performance compared to cheaper aftermarket alternatives.

3. **Reliability** A properly installed crankshaft seal prevents oil leaks, which can damage the timing belt/chain, pulleys, and other engine components. This part is critical for maintaining engine health, especially in high-mileage or performance-oriented vehicles.

4. **Ease of Installation** Since this is a direct-fit part, it should align correctly with the engine bay s existing components, making the replacement process smoother for mechanics with basic tools. This can save time and labor costs compared to custom-fitted or non-OEM parts.

5. **Warranty and Support** National Arau parts often come with warranties, providing some assurance against defects. Additionally, the brand has a track record of customer support, which can be helpful if issues arise post-installation.

6. **Cost-Effective Long-Term Solution** While the upfront cost may be higher than generic seals, investing in a quality part reduces the likelihood of frequent replacements or secondary damage, saving money over time.

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1. **Price** High-quality parts like this one are typically more expensive than budget aftermarket alternatives. For owners on a tight budget, this could be a significant upfront cost, especially if labor is also factored in.

2. **Potential Overkill for Low-Mileage Vehicles** If the vehicle has very low mileage and the seal failure was due to a one-time issue (e.g., a minor accident or contamination), a premium part may not be necessary. In such cases, a mid-range aftermarket seal could suffice.

3. **Installation Complexity** While this part is designed for a direct fit, replacing a crankshaft seal often requires removing the timing belt/chain, pulleys, and possibly the alternator or other components. This can be labor-intensive, especially for DIYers without experience. Professional installation may be required, adding to the total cost.

4. **Availability and Lead Times** Depending on the region, this specific part may not be readily available in all auto parts stores. Some specialty suppliers or online retailers might carry it, but ordering could take longer than generic parts.

5. **Risk of Counterfeit Parts** Even from reputable brands, there is a chance of receiving a counterfeit or substandard part, especially if purchasing from unverified sellers. Always buy from authorized dealers or trusted suppliers to mitigate this risk.

6. **Potential for Over-Specification** If the vehicle is not used aggressively (e.g., high-performance driving, extreme temperatures, or heavy loads), the premium seal may not offer significantly better performance than a reliable mid-tier alternative. This could make the higher cost unjustified for some owners.

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The National Arau 260512049377 front engine crankshaft seal is a well-engineered, high-quality part that offers superior reliability and longevity for Cadillac DeVille and Eldorado owners. Its direct-fit design minimizes installation risks, and the brand s reputation ensures durability. However, the higher cost and potential complexity of installation may not be justified for every situation, particularly in low-mileage vehicles or cases where a less expensive seal would suffice.

For most owners facing a crankshaft seal failure especially in older or high-mileage vehicles the investment in this part is worthwhile. It reduces the risk of oil leaks, secondary damage, and repeated replacements, making it a cost-effective solution in the long run.

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- You are replacing a failed crankshaft seal in a Cadillac DeVille or Eldorado.

- The vehicle has high mileage or is used in demanding conditions.

- You prioritize long-term reliability and want to avoid future leaks or damage.

- You are comfortable with or can afford professional installation.

- The vehicle has very low mileage, and the failure was due to a one-time issue.

- You are on a tight budget and can find a reputable mid-tier aftermarket seal with good reviews.

- You are confident in your DIY skills and can source a less expensive but compatible part.

**Final Verdict:** For the average owner dealing with a crankshaft seal issue, the National Arau part is the best choice due to its quality, fit, and reliability. However, weigh the cost against your vehicle s condition and usage to determine if it is the optimal solution for your specific situation. Always purchase from an authorized dealer to ensure authenticity.

Details:

2005 Cadillac STS Encoring:3.66;:93.0;:3.31;. 2000 2005 Cadillac DeVille Encoring:3.66;:93.0;:3.31;. New List Item. Front Engine Crankshaft Seal Fits Cadillac DeVille Eldorado, 2004 2005 SRX Encoring:3.66;:93.0;:3.31;.

Front Left Brake Hose Fits Aura TL. Position: Front. Front Right Brake Hose Fits Aura TL. 2004 2005 Cadillac XLR Encoring:3.66;:93.0;:3.31;.

part #: arau260512049377 prices

• $16.31-$26.19

specifications cranshafengin:

• for models: Deville, Eldorado
• for makes: Cadillac
• brand: National
• mpn: Arau260512049377
• part type: Seal Engine Crankshaft
• inside diameter: 52.000
• outside diameter: Inch
• thickness: 9.000
• material: Ptfe
• part description: Oil Seal
• series: 710500
• shaft: Mm
• helix type: Clockwise-spiral Lip Design
• package included: 1 Front Engine Crankshaft Seal
• category: Crankshafts Parts
• placement on vehicle: Front

seller cranshafengin:

• city: US
• rating: 97.2%
• # reviews: 821

returns cranshafengin:

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

offer cranshafengin:

• availability: In Stock
• quantity: 2
• started: May 13, 2026
• options: Ship-to-home
• sold: 0

shipping cranshafengin:

• transit: 2-6 Days
• type: Fixed
• class: Standard
• service: Standard
• cost: $0.00

general cranshafengin:

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

payments cranshafengin:

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

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