FORD OE CM5Z6700E Front Engine Crankshaft Seal

( Brand: Ford Oe ), ( Manufacturer Part Number: CM5Z6700E ), ( Part Type: Seal Engine Crankshaft ), ( Product Type: Engine ), ( Fitment Type: Direct Replacement ), ( Partslink Number: 1s7z-6700-aa, 9e5z-6700-a, Cm5z-6700-c, Cm5z-6700-e, Cm5z-6700-a ), ( Compatible Model S : Mustang, Explorer, Focus, Ranger, Police Responder Hybrid, Fusion ), ( Fitnote: Will Not Fit Police Interceptor Utility Models. ), ( Product Subtype: Crankshafts ), ( Department: Oem )

Review FORD OE Front Engine Crankshaft Seal fits MUSTANG 2015–2023

The **Ford CM5Z6700E Front Engine Crankshaft Seal** is a high-performance, precision-engineered component designed exclusively for Ford Mustang models spanning the generations from **2015 through 2023**, including the iconic **Shelby GT500, GT350, EcoBoost, and standard V8 variants** featuring the **5.0L Coyote engine**. This seal is a critical part of the engine s front cover assembly, ensuring a reliable, leak-free barrier between the crankshaft and the engine block while maintaining optimal lubrication and sealing integrity under high-performance demands. Crafted from **high-grade nitrile rubber with a reinforced steel spring retainer**, this seal is engineered to withstand the intense pressures, temperatures, and vibrations inherent in high-revving, high-torque applications, making it an ideal choice for both stock and modified Mustangs. Its **precision-molded design** guarantees a perfect fit with the **5.0L Coyote engine s crankshaft flange**, minimizing the risk of oil leaks, contamination, or premature wear common issues that can lead to costly engine damage if left unaddressed. Whether you're performing a routine maintenance check, addressing a persistent oil leak, or upgrading your Mustang s front cover for enhanced durability, this **OEM-quality seal** delivers the reliability and performance expected from Ford s high-performance lineup. Built to meet or exceed original equipment standards, it ensures a smooth, quiet operation while protecting internal components from debris and moisture, making it a must-have replacement for any Mustang owner seeking long-term engine health and peak performance.

### **Pros and Cons of buying a Ford CM5Z6700E Front Engine Crankshaft Seal for a 2015 2023 Mustang**

1. **Direct OEM Replacement** The CM5Z6700E is Ford s original equipment part, meaning it is designed specifically for your Mustang s engine bay layout and mounting points. This ensures a proper fit and reduces the risk of installation issues.

2. **High-Quality Materials** Ford uses durable materials in its OEM seals, which are engineered to withstand the heat, pressure, and vibrations common in high-performance engines, including those in Mustangs with forced induction or aggressive driving styles.

3. **Warranty Coverage** Purchasing from an authorized dealer or Ford-approved supplier often includes a warranty (typically 12 24 months), providing peace of mind against premature failure.

4. **Compatibility with Aftermarket Mods** Since this seal is used in modern Mustang engines (including EcoBoost and Coyote variants), it is compatible with common aftermarket upgrades like cold air intakes, exhaust systems, or performance chips that may affect oil pressure or temperature.

5. **Easier Installation** As an OEM part, it is designed to work seamlessly with the factory service procedures, reducing the likelihood of clearance or alignment issues during installation.

6. **Reliability** Ford s engineering standards generally result in a seal that is less likely to leak compared to some aftermarket alternatives, especially if the part is new and properly stored.

7. **Support for Extended Warranty** If your Mustang is under a factory warranty (or an extended warranty), using an OEM part may be required to maintain coverage for related components like the timing chain or oil pump.

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1. **Higher Cost** OEM parts are typically more expensive than aftermarket alternatives. The CM5Z6700E may cost significantly more than a generic or brand-name replacement seal, increasing labor and material expenses.

2. **Limited Availability Outside Dealers** While available at Ford dealerships and some specialty auto parts stores, it may not be as widely stocked as aftermarket options, potentially requiring pre-ordering or shipping delays.

3. **Potential for Counterfeit Parts** Purchasing from unscrupulous sellers (e.g., eBay, unverified online marketplaces) risks receiving a fake or low-quality OEM part that fails prematurely. Always buy from reputable sources.

4. **Overkill for Basic Repairs** If your Mustang has minimal mileage or you re replacing the seal due to a minor leak rather than engine wear, an aftermarket seal (from brands like Fel-Pro, Sealed Power, or Gates) may offer sufficient performance at a lower cost.

5. **Installation Complexity** While the seal itself is straightforward, replacing it often requires draining the oil, removing the timing chain cover, and ensuring proper torque specifications. DIYers without experience may struggle, increasing labor costs if done professionally.

6. **Environmental and Ethical Concerns** OEM parts contribute to electronic waste and resource consumption. If sustainability is a priority, aftermarket alternatives (especially recycled or eco-friendly options) may be preferable.

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### **Conclusion and Recommendation**

- You prioritize **reliability, warranty coverage, and OEM compatibility** above all else.

- Your Mustang is under warranty or you want to avoid potential voiding issues with aftermarket parts.

- You re confident in the **authenticity of the part** (buy from a dealership, Ford Parts Store, or a trusted online retailer like RockAuto or Amazon with verified sellers).

- You re prepared to pay the premium for peace of mind, especially if your vehicle is heavily modified or driven aggressively.

- You re on a budget and the leak is minor, consider a **high-quality aftermarket seal** (e.g., Fel-Pro 52000, Sealed Power 1000, or Gates 10000) from a reputable brand. These often provide comparable performance at a fraction of the cost.

- You re comfortable with DIY repairs and have access to proper tools, an aftermarket seal may be a practical alternative.

- You re replacing the seal due to **excessive wear or a known failure pattern** (e.g., in high-mileage Mustangs), the OEM part is still the safest long-term solution.

For most **2015 2023 Mustang owners**, the **Ford CM5Z6700E is the best choice** if you can afford it and source it from a trusted dealer. However, if cost is a concern and you re replacing the seal due to a non-critical leak, a **top-tier aftermarket seal** (with positive reviews for your specific engine variant) is a reasonable compromise. Always ensure the seal is compatible with your Mustang s **engine code** (e.g., Coyote vs. EcoBoost) and follow proper installation procedures to avoid future issues.

Details:

Features: Genuine OEM Ford part made to fit your vehicle perfectly. Replaces Original OE Part #: 1S7Z-6700-AA, 9E5Z-6700-A, CM5Z-6700-C, CM5Z-6700-E, CM5Z-6700-A. Manufactured to strict specifications for fit, form, and function, they not only help restore original performance but also install in no time flat. If you want to keep your Ford performing the way it did when left factory, rely on OE products.

Installs with no modifications to your vehicle. Designed to restore OEM performance for a safe ride. No modifications needed. Front Engine Crankshaft Seal CM5Z6700E by Ford OE.

Offers dependability and quality backed by the Ford name. Precision-built to strict Ford standards of safety.

part #: cm5z6700e prices

• $13.60-$18.84

specifications cranshafengin:

• for models: Mustang
• for makes: Ford
• for years: 2015-2023
• brand: Ford Oe
• mpn: Cm5z6700e
• part type: Seal Engine Crankshaft
• product type: Engine
• fitment type: Direct Replacement
• partslink number: 1s7z-6700-aa, 9e5z-6700-a, Cm5z-6700-c, Cm5z-6700-e, Cm5z-6700-a
• compatible model s : Mustang, Explorer, Focus, Ranger, Police Responder Hybrid, Fusion
• fitnote: Will Not Fit Police Interceptor Utility Models.
• product subtype: Crankshafts
• department: Oem

returns cranshafengin:

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

seller cranshafengin:

• rating: 95.7%
• city: Glendale, Arizona
• # reviews: 13276

general cranshafengin:

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

shipping cranshafengin:

• carrier: FedEx
• cost: $20.50
• transit: 5-8 Days
• class: Standard
• type: Calculated
• service: FedEx Ground / FedEx Home Delivery

offer cranshafengin:

• options: Ship-to-home
• started: June 4, 2026
• sold: 0
• quantity: 4
• availability: In Stock

payments cranshafengin:

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

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