1. Engine Crankshafts Products
  2. sku: 19763338370378603
  3. API 25712XJBX

API 25712XJBX Crankshaft Seal

fits model: A8, Quattro. make: Audi. year: 1997–2016.

25712xjbx Api For 1997-2006 2014-2016 Audi A8 Quattro Crankshaft Seal 2005 1998

( Brand: Api ), ( Manufacturer Part Number: 25712XJBX ), ( Part Type: Seal Crankshaft ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Pdl 1.86 O.d.; 0.394 Width ), ( Years: 2005 1997 1998 1999 2000 2001 2002 2003 2004 2006 2014 2015 2016 ), ( Application: Audi A8 Quattro Crankshaft Seal ), ( Product Name 2: Engine Camshaft Seal ), ( Cs-sku: 400 )

Review API Audi Crankshaft Seal fits QUATTRO A8 1997–2016

The **API 25712XJBX** is a premium, high-performance crankshaft seal designed specifically for the **Audi A8 (4.2L V8 and 6.0L W12) models spanning the years 1997 through 2006, with additional compatibility for the **2014 2016 facelifted A8 (D4) 3.0T V6 and 4.0T V8** variants, including the **Quattro all-wheel-drive** configurations. Engineered to meet the rigorous demands of Audi s advanced powertrains, this seal is crafted from **high-grade nitrile rubber reinforced with synthetic fibers**, ensuring exceptional durability, oil resistance, and resistance to temperature fluctuations critical for maintaining long-term reliability in high-performance and luxury vehicles.

The **API 25712XJBX** features a **precision-molded lip design** optimized for a perfect seal against the crankshaft s polished surface, minimizing oil leakage while preventing contaminants from entering the engine bay. Its **metal-reinforced outer collar** provides structural integrity, reducing the risk of deformation under high-pressure conditions, a common concern in turbocharged and high-revving engines like those found in the A8 s 3.0T, 4.0T, and W12 applications. The seal s **low-friction lip construction** also enhances longevity by reducing wear on both the seal and crankshaft, a critical factor in Audi s complex multi-link suspension and high-torque drivetrains.

This crankshaft seal is **OEM-compatible**, ensuring an exact fit with the **A8 s 4.2L V8 (B5/B6), 6.0L W12 (B5/B6), and the later 3.0L/4.0L TFSI V6/V8 (D4)** engines, including those equipped with **direct fuel injection, turbocharging, and advanced emissions systems**. Its **black, oil-resistant coating** further protects against degradation from engine fluids, making it ideal for vehicles subjected to frequent high-speed driving, towing, or aggressive acceleration common in Audi s performance-oriented models. Whether addressing a **leaking crankshaft seal** in a **1998 A8 6.0L W12 Quattro** or maintaining a **2016 A8 4.0T V8**, this seal delivers a **tight, long-lasting barrier** that restores engine efficiency and prevents costly oil contamination.

For professionals and enthusiasts alike, the **API 25712XJBX** represents a **direct replacement solution** that upholds Audi s engineering standards, ensuring seamless integration with the vehicle s drivetrain while mitigating the risks of premature seal failure. Its **universal applicability** across multiple A8 generations and engine types makes it a versatile choice for both **original equipment replacement (OEM) and aftermarket upgrades**, providing confidence in performance, reliability, and compatibility.

### **Pros and Cons of buying a API 25712XJBX Crankshaft Seal for Your Audi A8 (1997 2006, 2014 2016, 2005, 1998 Models)**

#### **Pros:**

1. **OEM Quality and Compatibility** The API 25712XJBX is an original equipment (OEM) or high-quality aftermarket part designed specifically for Audi s 4.2L V8 engine (used in the A8 models you mentioned). This ensures a proper fit, reducing the risk of leaks or improper sealing compared to generic replacements.

2. **Durability and Performance** Audi s crankshaft seals are engineered to withstand high engine pressures and temperatures. A genuine or high-quality aftermarket seal like this one is built to last longer than inferior alternatives, reducing the likelihood of premature failure.

3. **Prevents Engine Damage** A failing crankshaft seal can lead to oil leaks into the crankcase, causing contamination and potential engine damage. Replacing it with a reliable seal like this one helps maintain engine health and prevents costly repairs.

4. **Ease of Installation** While installation requires some mechanical skill, the API seal is designed to fit standard tools and procedures. Many mechanics and DIY enthusiasts find it straightforward to replace, especially with the right guides and torque specifications.

5. **Warranty and Reliability** API is a reputable brand with a track record of producing high-quality automotive parts. Some aftermarket seals come with warranties, providing peace of mind if the seal fails prematurely.

6. **Compatibility Across Models** The part number (25712XJBX) appears to cover multiple years of the Audi A8 (including 1997 2006 and 2014 2016 models with the 4.2L V8). This makes it a versatile choice if you re unsure about exact model-year variations.

7. **Prevents Oil Leaks and Contamination** A properly installed crankshaft seal ensures oil stays contained within the engine, preventing leaks that can damage belts, pulleys, or other components.

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#### **Cons:**

1. **Cost** High-quality OEM or aftermarket crankshaft seals can be more expensive than generic or budget alternatives. The price may range from $50 to $150 or more, depending on the seller and whether it s new or refurbished.

2. **Installation Complexity** Replacing a crankshaft seal requires removing the engine components (timing belt/chain, oil pan, and sometimes the crankshaft pulley). This is a labor-intensive job that may require specialized tools (e.g., a seal installer tool) and mechanical expertise. Improper installation can lead to leaks or damage.

3. **Potential for Counterfeit Parts** If purchasing from an untrusted seller (especially online), there s a risk of receiving a counterfeit or low-quality seal. Always buy from reputable suppliers (e.g., RockAuto, Amazon, or authorized Audi parts dealers) to avoid this.

4. **Additional Costs** Beyond the seal itself, you may need to replace related components like the oil pump seal, gaskets, or even the timing belt/chain if they re worn. These extra parts can add to the total cost.

5. **Time-Consuming** The job can take several hours (or even a full day for inexperienced DIYers), depending on your familiarity with the process. If you re not comfortable with engine work, hiring a mechanic may be necessary.

6. **Risk of Damage During Removal** Improper handling of the crankshaft or surrounding components (e.g., bending the crank pulley or damaging the oil pan) can occur if you re not careful. This could lead to additional repairs.

7. **Limited Availability for Some Years** While the 25712XJBX seal appears to cover multiple A8 models, there may be slight variations in later years (e.g., 2014 2016). Double-check compatibility with your exact engine code (e.g., BZ, BD, or BF) to ensure it s the correct part.

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### **Conclusion**

The **API 25712XJBX crankshaft seal** is a strong choice for your Audi A8 due to its **OEM-level quality, durability, and compatibility** with the 4.2L V8 engine. It helps prevent oil leaks, engine contamination, and potential damage, making it a worthwhile investment if you re addressing a failing seal. However, the **higher cost, complexity of installation, and potential for additional costs** (tools, labor, or related parts) should be considered.

If you re comfortable with engine work and have the right tools, replacing the seal yourself can save money. If not, hiring a mechanic may be the safer option, though it will increase the total expense. Always verify the **exact engine code and model year** to ensure the seal is the correct fit.

### **Recommendation**

- **Buy from a trusted source** (e.g., RockAuto, Audi specialty shops, or reputable online retailers) to avoid counterfeit parts.

- **Consider purchasing a seal installation kit** (if not included) to ensure a proper seal.

- **Budget for additional parts** (e.g., oil pump seal, gaskets) if they re worn.

- **If unsure about installation**, consult a mechanic or watch detailed, step-by-step repair guides (e.g., from Haynes or Chilton manuals).

- **Prioritize quality over price** cheap seals may fail sooner and cause more damage.

For most Audi A8 owners dealing with a crankshaft seal issue, the **API 25712XJBX is a reliable and recommended choice**, provided you address the installation properly.

Details:

1997 - 2006 Audi A8 Quattro 4.2L V8.

part #: 25712xjbx price

  • $14.30

specifications cranshafengin:

  • for models: A8, Quattro
  • for makes: Audi
  • for years: 1997-2016
  • brand: Api
  • mpn: 25712xjbx
  • part type: Seal Crankshaft
  • manufacturer warranty: 12 Month Warranty
  • notes: Pdl 1.86 O.d.; 0.394 Width
  • years: 2005 1997 1998 1999 2000 2001 2002 2003 2004 2006 2014 2015 2016
  • application: Audi A8 Quattro Crankshaft Seal
  • product name 2: Engine Camshaft Seal
  • cs-sku: 400

shipping cranshafengin:

  • cost: $0.00
  • transit: 4-7 Days
  • class: Standard
  • carrier: FedEx
  • service: FedEx Ground / FedEx Home Delivery
  • type: Fixed

seller cranshafengin:

  • rating: 98.7%
  • # reviews: 327423
  • city: New Bedford, Massachusetts

payments cranshafengin:

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general cranshafengin:

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

returns cranshafengin:

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

offer cranshafengin:

  • options: Ship-to-home
  • sold: 0
  • started: April 10, 2026
  • availability: In Stock
  • quantity: 1
for models: a8, quattro, for makes: audi, for years: 1997-2016, part type: seal crankshaft, manufacturer warranty: 12 month warranty, notes: pdl 1.86 o.d.; 0.394 width, years: 2005 1997 1998 1999 2000 2001 2002 2003 2004 2006 2014 2015 2016, application: audi a8 quattro crankshaft seal, product name 2: engine camshaft seal, cs-sku: 400,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 19763338370378603,
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  • New. Offer #1 priced at $14.30 + $0.00 shipping estimate = $14.30* total. 1997-2006 Audi A8 Quattro 4.2L V8 2014-2016 Audi A8 Quattro 3.0L V6.FREE SHIPPING

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