fits make: Ford. year: 1997–2007.

( Brand: Crankshaft Rebuilders ), ( Manufacturer Part Number: 19950-25MM-25MM ), ( Part Type: Bearing ), ( Ipn: F85e-ao; F86e-ac )
The **Ford 4.2L V6 Crankshaft Rebuild Kit (F85E-AO / F86E-AC, 1995 2007, 25mm x 25mm Bearings)** is a meticulously engineered aftermarket solution designed to restore peak performance and longevity to one of the most reliable yet often overlooked engines in Ford s lineup. This high-quality rebuild kit is specifically tailored for the **4.2L V6 (DOHC, 24-valve) found in vehicles ranging from the 1995 1997 Ford Taurus, Mercury Sable, and Lincoln Continental to the 1998 2007 Ford Taurus, Mercury Grand Marquis, and Lincoln Town Car**, ensuring compatibility with both the **F85E-AO (early model)** and **F86E-AC (later model with updated crankshaft pulley and timing chain adjustments)** variants. Engineered with precision, this kit replaces all critical internal components that wear over time including the **main and rod bearings (25mm x 25mm size)**, **crankshaft oil seals, thrust washers, and the timing chain tensioner assembly** eliminating excessive play, reducing friction, and preventing catastrophic failure.
The **main and rod bearings** in this kit are crafted from **high-grade, multi-layer steel-backed material with a robust aluminum-tin overlay**, delivering superior load-bearing capacity and resistance to wear under high RPM and heavy loads. These bearings are precision-machined to exacting tolerances, ensuring a perfect fit within the crankcase, which helps maintain optimal oil flow and minimize heat buildup critical factors in extending the engine s lifespan. The **25mm x 25mm bearing size** is standard for this application, providing the right balance between durability and smooth operation while accommodating the slight variations in crankshaft journal diameters found in both the **F85E-AO and F86E-AC** configurations.
Beyond the bearings, this rebuild kit includes **new crankshaft oil seals**, which are designed to prevent oil leaks at the front and rear of the crankshaft, a common issue in aging 4.2L engines. These seals feature a **high-quality rubber compound with reinforced metal reinforcement**, ensuring long-term sealing performance even under high-pressure conditions. Additionally, the kit replaces the **thrust washers**, which prevent axial crankshaft movement and reduce wear on the main bearing journals, a critical component often overlooked in basic overhauls. For engines equipped with the **timing chain system**, the kit may also include a **new tensioner assembly**, complete with a **spring-loaded mechanism and wear-resistant components**, to maintain proper chain tension and prevent slippage or premature wear an essential upgrade for engines with high mileage or those experiencing timing chain-related issues.
One of the standout features of this rebuild kit is its **universal compatibility** with both the **F85E-AO (pre-1998) and F86E-AC (1998 2007) variants**, accommodating subtle differences in crankshaft pulley designs and timing chain adjustments without requiring additional modifications. This makes it an ideal choice for restorers, performance tuners, and mechanics working on projects spanning multiple model years. The kit is also **backed by high-quality manufacturing standards**, ensuring that every component meets or exceeds OEM specifications, reducing the risk of premature failure and enhancing reliability. Whether used in a **restoration project, a high-mileage engine rebuild, or a performance modification**, this crankshaft rebuild kit provides the foundation for a smoother-running, more durable 4.2L V6 that can handle everything from daily driving to spirited acceleration with confidence.
For those seeking the best in aftermarket quality, this rebuild kit is a **cost-effective alternative to OEM parts**, offering the same level of precision and performance without the premium price tag. It is particularly well-suited for engines that have experienced **excessive crankshaft endplay, bearing wear, or oil leaks**, as well as those undergoing a **full engine overhaul** where internal components are being refreshed. With careful installation following Ford s recommended procedures including proper bearing alignment, oil seal installation, and torque specifications this kit ensures that the crankshaft assembly operates with minimal friction, extended service life, and improved overall engine efficiency. Whether you're tackling a **project car, a classic Ford, or a modern vehicle with a high-mileage 4.2L**, this rebuild kit is an indispensable tool for achieving a robust, long-lasting powerplant.
### **Pros and Cons of Buying Crankshaft Rebuilders (F85E-AO, F86E-AC, 19950-25mm-25mm Bearings) for a 1995-2007 Ford 4.2L V6**
#### **Pros:**1. **Compatibility and Fitment** These rebuild kits are specifically designed for the Ford 4.2L V6 engine (F85E-AO and F86E-AC variants), ensuring proper alignment with the crankshaft journals, rod bearings, and main bearings. They include the correct 25mm bearing sizes, which match the engine s specifications.
2. **Quality Materials** Reputable aftermarket rebuilders use high-grade steel for crankshafts and precision-machined bearings to reduce wear and improve durability compared to original parts that may have degraded over time.
3. **Extended Engine Life** A rebuilt crankshaft eliminates pitting, scoring, or imbalance issues that can lead to catastrophic failure. This helps prevent rod bearing failures, oil leaks, or excessive vibration, which are common in high-mileage 4.2L engines.
4. **Performance and Reliability** A properly balanced and machined crankshaft reduces internal friction, improving fuel efficiency and power output. This is particularly beneficial for engines that have been modified or subjected to heavy loads.
5. **Cost-Effective Alternative to Engine Replacement** Rebuilding the crankshaft is far cheaper than replacing the entire engine. It also avoids the hassle of sourcing a used or rebuilt engine block, which can be difficult for older Ford models.
6. **Warranty and Support** Many aftermarket rebuilders offer warranties (typically 1-3 years) and technical support, providing peace of mind that the part will perform as expected.
7. **Customization Options** Some rebuilders offer options like nitriding (hardening the crankshaft surface) or balancing for high-performance applications, which can be useful for modified engines.
8. **Preventative Maintenance** If the engine shows signs of crankshaft wear (e.g., oil consumption, unusual noise, or vibration), addressing it early with a rebuild kit can prevent a complete engine failure, saving thousands in repair costs.
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#### **Cons:**1. **Cost Relative to Original Parts** While cheaper than a full engine rebuild, these kits are still more expensive than buying a used or remanufactured crankshaft from a salvage yard. Prices typically range from **$200 $600**, depending on the brand and whether additional services (like balancing) are included.
2. **Labor-Intensive Installation** Rebuilding a crankshaft requires disassembling the engine, removing old bearings, cleaning the crankshaft, and installing new components. This is a complex job best left to a professional mechanic with experience in Ford V6 engines. DIYers may struggle with alignment, torque specifications, or sealing issues.
3. **Potential for Counterfeit or Low-Quality Parts** Some aftermarket rebuilders sell inferior products that may not meet OEM specifications. Buying from unknown or untrusted sellers risks receiving poorly machined crankshafts or bearings that fail prematurely.
4. **Additional Engine Work May Be Required** If the engine has significant wear (e.g., rod journals, main caps, or oil passages), simply replacing the crankshaft may not be sufficient. Other components (like bearings, seals, or timing components) may need replacement, increasing labor and part costs.
5. **Limited Availability of Specific Variants** While these rebuilders cover most 1995 2007 4.2L V6 engines, some variations (e.g., F85E-AO vs. F86E-AC) may have slight differences in bearing spacing or crankshaft geometry. Ensuring the correct part number is critical to avoid fitment issues.
6. **Risk of Improper Installation** If the crankshaft is not properly balanced or the bearings are not correctly seated, it can lead to vibration, bearing failure, or even crankshaft breakage. This underscores the importance of using a mechanic experienced with Ford engines.
7. **Time and Downtime** The process of rebuilding a crankshaft requires significant engine disassembly and reassembly, which can take **10 20 hours of labor** depending on the engine s condition. This means the vehicle will be out of service for an extended period.
8. **No Guarantee Against Future Issues** While a rebuilt crankshaft addresses current wear, other engine components (e.g., pistons, valves, or timing chain) may still be worn. If these are neglected, the engine could develop new problems after the rebuild.
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### **Ending Conclusion:**Replacing the crankshaft in a 1995 2007 Ford 4.2L V6 with a high-quality rebuild kit is a **smart long-term investment** for engines showing signs of wear, such as oil consumption, unusual noise, or vibration. The benefits extended engine life, improved reliability, and better performance outweigh the costs for vehicles that would otherwise require expensive repairs or full engine replacements.
However, the decision should be based on the **engine s overall condition**. If the block, rods, or other critical components are severely worn, a crankshaft rebuild alone may not be sufficient. In such cases, consulting a mechanic for a full engine assessment is advisable.
For most drivers, the **pros outweigh the cons**, especially if the engine has high mileage or has experienced past issues. The key is sourcing a **reputable rebuild kit** and ensuring professional installation to maximize the part s lifespan.
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### **Recommendation:** 1. **Verify Engine Condition** Before purchasing a rebuild kit, have a mechanic inspect the engine for:- Crankshaft journal wear (measure with a micrometer).
- Rod bearing and main bearing clearance.
- Block and rod integrity (cracks, warping, or corrosion).
- Oil leaks or contamination (which could damage new bearings).
2. **Choose a Trusted Rebuilder** Opt for well-known brands like **Crankshaft.com, JE, or Ford Performance Parts**, which offer warranties and precise machining. Avoid no-name or overly cheap options that may compromise quality.
3. **Budget for Labor** Since this is a labor-intensive job, factor in **$800 $1,500 ** for professional installation, depending on the shop s rates and the engine s complexity.
4. **Consider a Full Engine Rebuild if Needed** If the engine has extensive wear beyond the crankshaft, a **complete overhaul** (including rods, pistons, and bearings) may be more cost-effective in the long run.
5. **Document the Process** Keep records of the rebuild kit s specifications, installation torque values, and any warranty information for future reference.
**Final Verdict:** If the engine is otherwise sound, a **crankshaft rebuild is a worthwhile upgrade** for the 4.2L V6. For engines with multiple failing components, prioritize a full rebuild or replacement. Always prioritize quality parts and professional installation to ensure reliability.
Free Shipping is for continental USA only. Please refer to the products photograph for actual country of origin. Crankshaft Rebuilders part number 1995 0-25MM-25MM. Mains: .25MM, Rods: .25MM.
Country of Origin: origin is stated on product packaging. These items, although NEW, may contain shelf wear or imperfections due to the age of product. Shipping: Free Shipping is for contingent USA only.