AUTOMANN 840.62896SEL Rear Crankshaft Seal

( Brand: Automann ), ( Manufacturer Part Number: 840.62896SEL ), ( Part Type: Seal Crankshaft )

Review AUTOMANN Rear Main Crankshaft Seal Mack

The **Automann 840.62896SEL Rear Crankshaft Seal** is a high-performance, precision-engineered sealing solution specifically designed for Mack heavy-duty diesel engines, ensuring optimal protection against oil leaks and contamination while maintaining peak operational efficiency. Crafted from a robust, high-quality elastomeric compound, this seal is engineered to withstand the extreme pressures, temperatures, and mechanical stresses encountered in commercial trucking, construction, and industrial applications. The **840.62896SEL** features a reinforced lip design with a self-adjusting mechanism, allowing it to conform seamlessly to the crankshaft s surface while compensating for minor misalignments or wear, thereby extending both the seal s lifespan and the engine s reliability. Its durable construction incorporates a corrosion-resistant backing ring and a specialized lip profile that minimizes friction, reducing wear on the crankshaft and preventing premature failure. This seal is particularly suited for Mack engines equipped with the **E7 or E7H** series, where maintaining a secure, leak-free interface between the crankshaft and the rear housing is critical for long-term performance. Whether installed in a fleet vehicle, a heavy-duty tow truck, or a specialized industrial engine, the Automann 840.62896SEL delivers superior sealing performance, helping to prevent costly oil leaks, reduce maintenance downtime, and ensure compliance with emissions and operational standards. Built to meet the rigorous demands of professional-grade machinery, this seal exemplifies Automann s commitment to quality, durability, and engineering excellence in aftermarket automotive components.

### **Pros and Cons of buying a Automann 840.62896SEL Rear Crankshaft Seal for Mack Engines**

1. **Compatibility and Fit:** The Automann 840.62896SEL is specifically designed for Mack engines, particularly those requiring a rear crankshaft seal in the 840 series. This ensures a proper fit without modifications, reducing the risk of leaks or improper installation.

2. **Quality Materials:** Automann is a well-known supplier of OEM-quality or aftermarket parts for heavy-duty vehicles. This seal is likely made from durable materials such as nitrile rubber or similar compounds, which are resistant to oil, heat, and mechanical stress critical for long-term performance in diesel engines.

3. **Ease of Installation:** The part is likely designed with standard mounting features, making it easier for mechanics to install compared to aftermarket alternatives that may require additional tools or modifications.

4. **Warranty and Support:** Automann offers warranties on many of its parts, providing some assurance against defects. Additionally, they provide technical support and documentation to help with installation and troubleshooting.

5. **Cost-Effective Alternative to OEM:** While not an exact OEM part, this seal is often priced lower than genuine Mack seals, offering a balance between quality and affordability without sacrificing performance.

6. **Availability:** Automann has a wide distribution network, meaning this part is likely easier to source quickly compared to OEM parts, which can sometimes have long lead times.

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1. **Not a Genuine OEM Part:** While high-quality, this is an aftermarket replacement, not an original Mack part. Some purists or fleet managers may prefer OEM components for warranty or longevity reasons, though the difference in performance is often negligible for most applications.

2. **Potential Variability in Quality:** Although Automann is reputable, there is a slight risk of receiving a subpar seal if the batch is inconsistent. This is rare but possible with aftermarket parts, whereas OEM parts undergo stricter quality control.

3. **Limited Long-Term Data:** Since this is not an OEM part, there may be less long-term field data or feedback from users compared to Mack s original seals. However, Automann s reputation suggests this is unlikely to be a major issue.

4. **Installation Risks:** If the installation is not done correctly even with a properly fitting seal it could lead to leaks or premature failure. This risk applies to any seal replacement, but improper handling is more likely with aftermarket parts if the installer lacks experience with non-OEM components.

5. **Price Sensitivity:** While often cheaper than OEM, the price may still be higher than very low-end aftermarket brands. Buyers should weigh whether the slight premium is justified by Automann s reputation.

6. **Compatibility Verification Required:** Even though the part is listed for Mack 840 engines, it s essential to double-check the exact engine model and application (e.g., turbocharged, aftertreatment systems) to ensure no compatibility issues arise with auxiliary components.

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The Automann 840.62896SEL rear crankshaft seal is a strong aftermarket alternative to OEM Mack seals. It offers a good balance of quality, compatibility, and cost-effectiveness for most applications. The risks primarily related to quality variability or installation errors are mitigated by Automann s reputation and the part s design for heavy-duty use. For most fleet operators or independent mechanics, this seal is a reliable and practical choice, especially when OEM parts are unavailable or prohibitively expensive.

- You need a high-quality, cost-effective replacement for a Mack 840 rear crankshaft seal.

- You prioritize ease of sourcing and installation over OEM branding.

- You trust Automann s reputation for durability and compatibility.

- You verify the exact engine model and application to ensure a perfect fit.

- Your application requires strict OEM compliance (e.g., warranty considerations or fleet policies).

- You are unsure about the installation process and lack experience with aftermarket seals.

- You find a significantly cheaper alternative from a lesser-known brand, as quality may not be guaranteed.

For most users, this seal is a **recommended purchase** due to its reliability and value. Always pair the purchase with proper installation procedures to maximize longevity.

Details:

Made of high-quality components for durability, reliability, and performance. Designed specifically for trucks, trailers, and buses. Manufactured following strict OE standards to work like the original component. Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle.

Automann 840.62896SEL Rear Main Crankshaft Seal Mack: Part Number: Manufacturer. Engineered using the latest technology to ensure product lasts longer in service.

specifications cranshafengin:

• for makes: Mack
• brand: Automann
• mpn: 840.62896sel
• part type: Seal Crankshaft

returns cranshafengin:

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

payments cranshafengin:

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

offer cranshafengin:

• started: February 4, 2026
• sold: 0
• best offers: True
• options: Ship-to-home
• quantity: 5
• availability: In Stock

general cranshafengin:

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

shipping cranshafengin:

• type: Fixed
• service: Standard
• cost: $0.00
• transit: 3-7 Days
• class: Standard

seller cranshafengin:

• city: Los Angeles, California
• rating: 99.1%
• # reviews: 64233