FEL-PRO Tcs Crankshaft Front Seal Set TCS-46138 019826503275

( Brand: Fel-pro ), ( Manufacturer Part Number: TCS46138 ), ( Model: TCS-46138 ), ( Part Type: Seal Crankshaft ), ( Color: Factory ), ( Itemheight: 11 ), ( Itemlength: 203 ), ( Itemwidth: 89 ), ( Packageheight: 15 ), ( Packagelength: 163 ), ( Packageweight: 42 ), ( Packagewidth: 103 ), ( Size: One Size ), ( UPC: 019826503275 )

Review FEL PRO Tcs 46138 Crankshaft Front Seal Set One Size Factory

The **Fel-Pro TCS46138 TCS 46138 Crankshaft Front Seal Set** represents a premium, high-performance solution designed to address the critical sealing requirements of modern high-output and turbocharged engines. Engineered with Fel-Pro s proprietary **Thermal Conductivity Sealant (TCS)** technology, this seal set delivers superior durability, thermal management, and leak resistance, making it an ideal choice for applications where reliability and longevity are paramount. The TCS 46138 is specifically formulated to withstand the extreme pressures, high rotational speeds, and elevated temperatures encountered in aggressive driving conditions, forced induction setups, and high-performance engine builds. Constructed from a high-quality, reinforced elastomer compound, this seal set features an optimized lip design that ensures a tight, consistent seal against the crankshaft, minimizing oil leakage while preventing contaminants from entering the engine bay. The inclusion of Fel-Pro s **Thermal Conductivity Sealant** not only enhances the seal s resistance to heat degradation but also improves heat dissipation, reducing the risk of premature failure in demanding environments. Whether installed in a naturally aspirated high-performance engine, a turbocharged application, or a supercharged setup, the TCS 46138 provides a robust barrier against oil loss and external contaminants, contributing to extended engine life and reduced maintenance intervals. Backed by Fel-Pro s reputation for precision engineering and quality, this seal set is a trusted upgrade for mechanics and enthusiasts seeking a reliable, long-lasting solution for crankshaft front seal applications.

The **Fel-Pro TCS46138/TCS46138 Crankshaft Front Seal Set** is a popular aftermarket option for replacing the front crankshaft seal in engines like the GM LS-series, LT-series, and some Ford 5.0L/5.4L applications. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Fel-Pro TCS46138/TCS46138 Crankshaft Front Seal Set**

1. **High-Quality Materials**

The Fel-Pro brand is well-regarded for using durable, high-performance materials in its seals. The TCS46138 is designed with reinforced rubber and a metal reinforcement ring to resist oil leakage and deformation over time. This helps extend the seal s lifespan compared to cheaper, generic alternatives.

2. **Precision Fitment**

Fel-Pro seals are engineered to match OEM specifications closely, ensuring a proper seal against the crankshaft and front cover. This reduces the risk of oil leaks and improves reliability, especially in high-performance or modified engines where oil pressure and temperatures may be higher.

3. **Compatibility with Common Engines**

- GM LS1, LS2, LS3, LT1, LT4, LT5, L96, L97, L98

- Ford 5.0L (Trini-Matic) and 5.4L (Modular) engines

- Some Chevrolet, GMC, and Cadillac models with these engines

This makes it a versatile choice for many aftermarket and OEM applications.

4. **Ease of Installation**

Fel-Pro provides clear installation instructions, and the seal is typically designed to fit standard tools (e.g., seal driver, puller, and torque wrench). The pre-lubricated design simplifies installation, reducing the risk of damage during fitting.

5. **Warranty and Reliability**

Fel-Pro offers a warranty on its products, which can provide peace of mind if the seal fails prematurely due to a manufacturing defect. The brand is also known for consistent quality, reducing the likelihood of early failure.

6. **Performance in High-Temperature Environments**

The seal is formulated to withstand the heat generated in modern engines, which is particularly important for high-performance or turbocharged applications where oil temperatures can exceed 250 F (121 C).

7. **Reduced Oil Consumption**

A properly fitted Fel-Pro seal minimizes oil leakage into the valve cover, which can reduce oil consumption over time. This is beneficial for engines prone to burning oil or those with high mileage.

8. **Aftermarket Support and Availability**

Fel-Pro is widely available through auto parts stores, online retailers (e.g., RockAuto, Amazon, Summit Racing), and performance shops. This makes it easy to purchase, even for rare or discontinued applications.

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### **Cons of the Fel-Pro TCS46138/TCS46138 Crankshaft Front Seal Set**

1. **Cost**

Fel-Pro seals are more expensive than generic or no-name brands. While the price reflects quality, it may be a significant investment for budget-conscious buyers, especially if the seal needs to be replaced frequently due to other engine issues (e.g., worn crankshaft journals or misaligned components).

2. **Potential for Overkill in Some Applications**

For older or high-mileage engines with significant wear (e.g., bent crankshaft, warped front cover, or excessive oil sludge), replacing just the seal may not be sufficient. In such cases, additional repairs (e.g., crankshaft resurfacing, front cover machining) may be necessary, making the seal replacement less impactful.

3. **Installation Challenges**

- Over-torquing the front cover bolts can distort the seal or damage the crankshaft.

- Using the wrong tools (e.g., a hammer to tap the seal into place) can cause cracks or misalignment.

- Failure to clean the crankshaft and seal surfaces thoroughly can lead to premature failure.

These risks require careful attention during installation.

4. **Limited Longevity in Severe Conditions**

While Fel-Pro seals are durable, extreme conditions (e.g., excessive heat, contamination, or high oil pressure) can still cause them to wear out faster than expected. In such cases, upgrading to a more advanced seal (e.g., a ceramic or high-temperature seal) may be warranted.

5. **Compatibility Confusion**

The TCS46138 designation can sometimes overlap with other Fel-Pro seals (e.g., TCS46138 vs. TCS46138A or similar variants). Buyers must verify the exact application fitment to avoid purchasing the wrong seal, as mismatched seals can lead to leaks or installation difficulties.

6. **Dependence on Other Components**

- A warped or damaged front cover can cause the seal to leak.

- A bent crankshaft can damage the seal during installation or operation.

- Poor oil quality or excessive carbon buildup can accelerate seal wear.

Addressing these issues may require additional work beyond just replacing the seal.

7. **Limited Customization**

Fel-Pro does not offer extensive customization options for seals (e.g., different materials or reinforcement levels). Buyers must choose from the available stock options, which may not suit highly specialized applications.

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### **Conclusion**

The **Fel-Pro TCS46138/TCS46138 Crankshaft Front Seal Set** is a strong choice for those seeking a reliable, high-quality replacement seal for GM LS-series, LT-series, and Ford 5.0L/5.4L engines. Its superior materials, precision fitment, and compatibility with common applications make it a preferred option over cheaper alternatives. The brand s reputation for durability and warranty support further adds value, especially for performance or high-mileage engines.

However, the higher cost and potential installation challenges mean it is not always the best choice for every situation. Buyers should consider their budget, engine condition, and specific application requirements before purchasing. If the engine has other underlying issues (e.g., worn crankshaft or front cover), addressing those first may yield better long-term results.

For most standard applications where oil leaks are the primary concern, the Fel-Pro TCS46138 is a **highly recommended** choice. It strikes a balance between quality and practicality, making it suitable for both DIY enthusiasts and professional mechanics.

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### **Recommendation**

- You are replacing the seal in a GM LS-series, LT-series, or Ford 5.0L/5.4L engine.

- You prioritize quality and longevity over cost.

- Your engine is in good condition (no bent crankshaft, warped front cover, or excessive wear).

- You are comfortable with careful installation or plan to have a professional handle it.

- Your budget is tight and you are willing to accept a slightly lower-quality seal (e.g., generic or budget brands like Moroso or Carter).

- Your engine has significant wear that requires additional repairs (e.g., crankshaft resurfacing).

- You are working on a rare or non-standard application where Fel-Pro s compatibility is uncertain verify fitment carefully.

For most users, the Fel-Pro TCS46138 is the **best all-around choice** for a crankshaft front seal replacement due to its reliability and performance. Always pair it with proper installation techniques and ensure the rest of the engine is in good condition for optimal results.

Details:

Shipping:: Shipping is complimentary within the lower 48 US States. Application specific design to ensure a perfect fit. Validated for fit, form and function. YOUR Satisfaction is our #1 Priority.

COMPATIBILITY Fits 2017 2020 Porsche Macon; 2015 2020 Audi Q3; 2009 2020 A3 Quarto; 2013 2016 all road; 2013 2020 A4 2015 - 2018 Q3 2018 2020 A5 Sport back; TTS 2008 2020 A3; 2010 - 2013. Product Features: FEL-PRO TCS 46138 Engine Crankshaft Seal Kit for Volkswagen Tijuana. Meets or exceeds all original equipment specifications.

part #: tcs46138 prices

• $14.25-$18.49

specifications sealantadhesivee:

• brand: Fel-pro
• mpn: Tcs46138
• model: Tcs-46138
• part type: Seal Crankshaft
• color: Factory
• itemheight: 11
• itemlength: 203
• itemwidth: 89
• packageheight: 15
• packagelength: 163
• packageweight: 42
• packagewidth: 103
• size: One Size
• upc: 019826503275

returns sealantadhesivee:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted
• method: Money back

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• wallet: Paypal
• other
• credit card: Diners-club

seller sealantadhesivee:

• # reviews: 774
• rating: 98.3%
• city: Roy, Utah

shipping sealantadhesivee:

• service: Standard
• type: Fixed
• class: Standard
• cost: $0.00
• transit: 4-10 Days

general sealantadhesivee:

• Adhesives, Sealants Tapes > Caulks, Sealants Removers > Caulks Sealants
• condition: New

offer sealantadhesivee:

• started: March 29, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 3