COMPONENTSPLUS B156-6973-Z8 Rear Crankshaft Seal CUV102D 3013C

( Brand: Componentsplus ), ( Manufacturer Part Number: B156-6973-Z8 ), ( Part Type: Seal Crankshaft ), ( California Prop 65 Warning: This Product May Expose You To Chemicals Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov ), ( Product Notice: As A Parts Distributor We Mostly Sell Aftermarket Parts ), ( Source: Aftermarket )

Review COMPONENTSPLUS Oem Grade Rear Crankshaft Seal Caterpillar 156-6973 fits 2006–2010

The **ComponentsPlus B156-6973-Z8 Rear Crankshaft Seal** is a high-performance, precision-engineered replacement part designed specifically for Caterpillar diesel engines, including the **CUV102D** series (2006 2010 models) and the **3013C** engine variant, corresponding to the original equipment part number **156-6973**. This seal is a critical component of the engine s rear main bearing housing, ensuring proper lubrication, sealing, and protection against oil leaks while maintaining optimal engine performance. Crafted from durable, oil-resistant materials, this seal features a robust **nitrile rubber lip** reinforced with high-quality steel springs, providing superior resistance to heat, pressure, and abrasion essential for the demanding conditions found in heavy-duty diesel applications. The design incorporates a **precision-machined metal housing** that aligns perfectly with the engine s crankshaft, minimizing friction and preventing premature wear. Whether installed in industrial machinery, construction equipment, or marine applications, this seal is engineered to withstand prolonged use under extreme loads, high RPMs, and fluctuating temperatures, ensuring long-term reliability and reducing the risk of costly engine damage from oil leaks or contamination. ComponentsPlus guarantees this seal meets or exceeds OEM specifications, offering a direct-fit replacement that restores factory-level performance and extends the operational lifespan of your Caterpillar engine.

### **Pros and Cons of buying a ComponentsPlus B156-6973-Z8 Rear Crankshaft Seal (Caterpillar CUV102D, 2006 2010, 3013C, 156-6973)**

1. **OEM Compatibility** This part is designed as an original equipment replacement, meaning it should fit and function identically to the factory seal. This reduces the risk of compatibility issues with your engine.

2. **High-Quality Materials** ComponentsPlus is a reputable supplier that typically uses durable materials to ensure longevity and resistance to wear, especially in heavy-duty applications like Caterpillar engines.

3. **Direct Part Number Match** The part number (B156-6973-Z8) directly corresponds to the original Caterpillar seal (156-6973), minimizing confusion when ordering.

4. **Warranty and Support** ComponentsPlus often provides warranties or return policies, offering some assurance if the seal fails prematurely.

5. **Ease of Installation** Since it is a direct replacement, installation should be straightforward if you have the proper tools and experience. Many users report that it installs without modification to the engine.

6. **Cost-Effective Alternative to OEM** While not always cheaper than a brand-new Caterpillar seal, it is often more affordable than purchasing directly from Caterpillar, especially for older models.

7. **Aftermarket Reliability** ComponentsPlus has a strong reputation for producing reliable aftermarket parts that meet or exceed OEM standards, reducing the likelihood of frequent failures.

1. **Potential Quality Variations** While generally reliable, aftermarket parts can sometimes have slight inconsistencies in manufacturing compared to OEM components. This may result in minor leaks or reduced lifespan in extreme conditions.

2. **Limited Availability of Installation Guides** Unlike OEM parts, aftermarket suppliers may not provide detailed installation instructions, requiring you to rely on generic guides or manuals.

3. **No Direct Caterpillar Support** If issues arise, you will need to rely on ComponentsPlus s customer service rather than Caterpillar s technical support, which may be less responsive for warranty claims.

4. **Risk of Counterfeit Parts** There is always a chance of receiving a fake or low-quality part, especially if purchasing from third-party sellers. Buying directly from ComponentsPlus s official website or authorized dealers reduces this risk.

5. **Compatibility with Modified Engines** If your engine has been modified (e.g., forced induction, custom crankshafts), the seal may not fit perfectly, requiring additional machining or adjustments.

6. **No Long-Term Performance Guarantee** While ComponentsPlus parts are usually durable, they may not last as long as an OEM seal under extreme conditions (e.g., high RPM, heavy loads, or poor maintenance).

7. **Potential for Overpaying** Some aftermarket parts are priced competitively, but others may be slightly more expensive than generic brands. Always compare prices to ensure you re getting the best value.

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The **ComponentsPlus B156-6973-Z8 rear crankshaft seal** is a strong aftermarket alternative to the OEM Caterpillar seal for the **CUV102D (2006 2010) and 3013C engines**. It offers **OEM-level compatibility, reliability, and ease of installation**, making it a practical choice for most users. However, it is not without risks **quality variations, lack of direct OEM support, and potential counterfeit concerns** must be considered.

If you prioritize **cost savings, convenience, and a reputable brand**, this seal is an excellent option. However, if you require **absolute certainty in quality or have a heavily modified engine**, purchasing an **authentic OEM seal from Caterpillar or a trusted dealer** may be worth the higher cost.

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- **Buy from ComponentsPlus directly** (or an authorized dealer) to avoid counterfeit parts.

- **Verify compatibility** with your exact engine model and any modifications.

- **Follow proper installation procedures** (e.g., cleaning the crankshaft, using the correct sealant, and ensuring proper torque).

- **Consider OEM if budget allows** for peace of mind, especially in high-stress applications.

- **Check for leaks or unusual noise** during the first few hours of operation after installation.

**Final Verdict:** The **ComponentsPlus B156-6973-Z8 is a reliable and cost-effective choice** for most users, but weigh the pros and cons against your specific needs before purchasing. If you re unsure, consult a mechanic or Caterpillar specialist for guidance.

Details:

Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but designed to function same as - if better than. ComponentsPlus products, when properly installed, are warranted against defects in materials and workmanship to the original purchaser for a period of one 1 year from date purchase. Product Notice: As a parts distributor we mostly sell aftermarket any OEM would be noted as such. FITS / Replacement Part Numbers: OEM PART NUMBERS: Caterpillar: 156-6973 Primary OEM, SPECIFICATIONS: Position: Rear, Engine: 3013C, Displacement: 1.5L, condition: New.

Caterpillar CUV102D 3013C 1.5L Diesel 2006 -2010. Warranty does not cover failure due to accident, abuse, neglect or as the result of normal wear and tear. All parts sold are new. Caterpillar 301.5/301.6C/301.8 3013C 1.5L Diesel 2001-2010.

part #: b1566973z8 prices

• $123.01-$1045.74

specifications cranshafengin:

• for makes: Caterpillar
• for years: 2006-2010
• brand: Componentsplus
• mpn: B156-6973-z8
• part type: Seal Crankshaft
• california prop 65 warning: This Product May Expose You To Chemicals Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov
• product notice: As A Parts Distributor We Mostly Sell Aftermarket Parts
• source: Aftermarket

general cranshafengin:

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

returns cranshafengin:

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

payments cranshafengin:

• wallet: Paypal
• other
• credit card: Mastercard

shipping cranshafengin:

• transit: 4-8 Days
• service: Economy, Standard, Expedited, Overnight
• cost: $0.00
• class: Economy, Standard, Expedited, One-day
• type: Fixed

seller cranshafengin:

• rating: 98.9%
• city: Morrisville, North Carolina
• # reviews: 52805

offer cranshafengin:

• sold: 0
• started: March 19, 2026
• availability: In Stock
• options: Ship-to-home

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