FORD 4C4Z-4635-EA Engine Mounts EXFS4
fits make: Ford.
( Manufacturer Part Number: 4C4Z-4635-EA ), ( Part Type: Engine Mount ), ( Features: Ford Universal Joint Repair Kit ), ( Fitment Type: Direct Replacement ), ( Modified Item: No ), ( Manufacturer Warranty: Unspecified Length )
Review FORD
The **Ford 4C4Z-4635-EA EXFS4** is a high-performance, factory-sourced automatic transmission designed for Ford s most demanding applications, particularly in high-output engines and performance-oriented vehicles. This transmission is a refined evolution of Ford s legendary **4R75E** and **4R100** designs, engineered to deliver exceptional durability, smooth shifting, and superior torque handling under extreme conditions. Built with precision-crafted components, the **4C4Z** incorporates a **6-speed forward gear ratio** (including a low-range overdrive) and a **reverse gear**, making it ideal for both street and track use. Its robust **planetary gearset** and **multi-disc clutch packs** are designed to withstand continuous high-torque loads, often exceeding 1,000 lb-ft, without sacrificing shift quality or longevity. The transmission features a **torque converter with a stamped housing**, which enhances cooling efficiency and reduces parasitic drag, while the **valve body** is meticulously tuned for optimal shift feel, whether in **manual mode (EXFS4)** or automatic operation.
The **EXFS4** designation indicates this transmission is equipped with **Ford s Electronic Shift-By-Wire (EXFS) system**, allowing for precise, driver-controlled shifting via a shifter interface, much like a manual transmission, while retaining the benefits of an automatic such as torque converter lockup and seamless upshifts. This system is particularly favored by enthusiasts who desire the engagement of a manual gearbox without the physical effort, making it a popular choice for muscle cars, performance trucks, and high-performance applications like the **Ford Mustang GT, F-150 Raptor, or Shelby GT500**. The transmission s **aluminum case** and **heavy-duty bearings** contribute to its lightweight yet rugged construction, while the **sealed gearset** minimizes oil leakage and extends service intervals. Additionally, the **4C4Z** is compatible with Ford s **TorqueFlite** and **PowerShift** engine management systems, ensuring seamless integration with modern powertrains.
For those seeking reliability in extreme conditions, the **4C4Z-4635-EA** is built to meet or exceed **Ford s factory specifications**, often incorporating **high-capacity fluid pumps, reinforced shift solenoids, and upgraded clutch materials** to prevent wear under heavy loads. Whether paired with a **supercharged EcoBoost V6, twin-turbo V8, or even a hybrid powertrain**, this transmission delivers consistent performance, making it a staple in both aftermarket builds and OEM applications. Its **modular design** also allows for easy upgrades, such as **performance clutch kits, revised valve body programming, or even conversion to a limited-slip differential (LSD) setup**, further enhancing its adaptability. With its blend of **Ford s engineering heritage and cutting-edge technology**, the **4C4Z-4635-EA EXFS4** stands as a benchmark for automatic transmissions in high-performance automotive applications, offering a perfect balance of strength, precision, and driver engagement.
### **Pros and Cons of Buying a Ford 4C4Z-4635-EA (EXFS4) Transmission**
The **Ford 4C4Z-4635-EA (EXFS4)** is a four-speed automatic transmission commonly found in older Ford vehicles, particularly in models like the **F-150 (1997 2003)**, **Excursion**, and some **E-Series vans**. Below is a detailed breakdown of its advantages and disadvantages.
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### **Pros**
1. **Proven Reliability in Stock Form**
- The 4C4Z was a well-regarded transmission in its time, especially in Ford s full-size trucks and SUVs. Many units lasted well over 200,000 miles with basic maintenance.
- It was a step up from earlier Ford transmissions (like the C4 or C5) in terms of smoothness and durability for its era.
2. **Widely Available Parts and Aftermarket Support**
- Being an older Ford transmission, it has a strong aftermarket presence. Clutch kits, bands, solenoids, and seals are readily available at reasonable prices.
- Many performance and rebuild shops specialize in 4-speed automatics, making repairs and upgrades accessible.
3. **Modifiable for Performance**
- The 4C4Z can be upgraded with **performance clutch kits** (e.g., **Ford Performance, Torque Thrust, or custom-built kits**) to handle higher torque loads, making it suitable for **turbocharged or high-horsepower applications** (e.g., 6.0L Power Stroke, 7.3L Power Stroke, or even some V8 setups).
- **Upgraded valvetrains** (e.g., **Torque Thrust, Ford Performance**) can improve shift quality and reduce lag.
- **Torque converter upgrades** (e.g., **Torque Thrust 6300 series**) can improve launch performance and overall responsiveness.
4. **Good for Budget Builds**
- If you re working with a **limited budget** and need a transmission that can handle moderate power (e.g., a stock 5.4L Triton or 6.8L Triton), the 4C4Z can be a cost-effective choice, especially if you re willing to rebuild or modify it.
- Rebuilding costs are often lower than newer transmissions (e.g., 6R140, 6R80).
5. **Compatible with a Wide Range of Engines**
- Works well with **Ford s 5.4L Triton (Modular), 6.8L Triton, 7.3L Power Stroke, and even some V8s** (like the 5.8L Triton or 7.5L Power Stroke) with the right modifications.
- Can be paired with **turbocharged engines** (e.g., 6.0L Power Stroke) with proper clutch and valvetrain upgrades.
6. **Easier to Work On Than Some Modern Transmissions**
- Compared to newer Ford transmissions (e.g., 6R140), the 4C4Z is **simpler to rebuild** and has fewer electronic quirks. Many mechanics are familiar with its internals.
- No complex torque converter control modules (TCCM) or advanced solenoids to worry about in basic builds.
7. **Good for Classic and Restoration Projects**
- If you re restoring an older Ford truck or SUV, the 4C4Z is a **logical choice** for maintaining authenticity while improving performance.
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### **Cons**
1. **Limited Torque Capacity Without Modifications**
- **Stock clutch capacity is around 400 500 lb-ft** of torque. This is **insufficient for modern turbocharged diesel engines** (e.g., 6.7L Power Stroke) or heavily modified gasoline engines without upgrades.
- Running it beyond its stock limits can lead to **premature clutch failure, band wear, or solenoid issues**.
2. **Shift Quality Can Be Poor Without Upgrades**
- The stock 4C4Z has **softer shifts** compared to modern transmissions. Without a **performance valvetrain or upgraded solenoids**, it can feel sluggish or jerky.
- The **torque converter is not as efficient** as modern units, leading to slightly worse launch performance.
3. **Electronic Issues and Solenoid Problems**
- The **EXFS4 version** (Electronic Feedback System) is more reliable than earlier models but can still develop **solenoid failures** over time, leading to **hard shifts or no shifts at all**.
- **Transmission Control Module (TCM) issues** can arise, requiring reprogramming or replacement.
4. **Band Wear and Leakage Concerns**
- The **forward and reverse bands** are common failure points, especially in high-mileage units. They can **stretch or break**, causing **slipping or failure to engage gears**.
- **Seal leaks** (around the input/output shafts) are a frequent issue, leading to **transmission fluid contamination and premature wear**.
5. **Not Ideal for High Horsepower Applications Without Heavy Mods**
- While it can handle **stock or mildly modified engines**, it **struggles with extreme power** (e.g., **700 hp**) without **full clutch rebuilds, upgraded bands, and heavy-duty valvetrains**.
- **Torque converter matching** becomes critical stock converters are not suitable for high-horsepower setups.
6. **Discontinued by Ford (Limited New Parts)**
- Ford **discontinued production** of the 4C4Z in the early 2000s, meaning **new OEM parts are no longer available**. Reliance on aftermarket or rebuilt units is necessary.
- Some **rare or specialized parts** (e.g., specific bands, solenoids) may be hard to find.
7. **Potential for Hidden Internal Damage**
- Many used 4C4Z transmissions have **internal wear** (e.g., **sun gear pitting, bearing failure, or clutch disc damage**) that isn t always visible during a basic inspection.
- **Fluid changes are critical** old, degraded fluid can accelerate wear on the **clutches, bands, and torque converter**.
8. **Not as Fuel-Efficient as Modern Transmissions**
- The **4C4Z lacks modern efficiency features** (e.g., **adaptive shift programming, dual-clutch hybrids**). It will **shift later and less smoothly** compared to a 6R140 or 6R80.
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### **Conclusion**
The **Ford 4C4Z-4635-EA (EXFS4)** is a **solid choice for certain applications**, particularly if you re working with **moderate power levels, a budget build, or a classic Ford restoration**. It offers **good reliability when properly maintained and upgraded**, a **strong aftermarket support system**, and the ability to **handle turbocharged engines with the right modifications**.
However, it is **not ideal for high-horsepower applications without significant investment** in clutch upgrades, valvetrains, and torque converters. Its **electronic quirks, band wear issues, and limited torque capacity** make it less suitable for **modern turbo diesel setups or extreme power builds** without careful planning.
If you re **building a truck for daily driving with a stock or mildly modified engine**, the 4C4Z can be a **cost-effective and capable choice**. If you re **pushing for high performance (500 hp)**, a **6R140 or 6R80** (with proper modifications) would be a **more future-proof** option.
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### **Recommendation**
- **Buy it if:**- You re working with a **budget build** (e.g., stock or mildly modified 5.4L/6.8L Triton).
- You plan to **rebuild or heavily modify it** (clutch, bands, valvetrain, torque converter).
- You need a **reliable, proven transmission** for a **classic or restoration project**.
- You re okay with **some electronic quirks** and are prepared for **potential solenoid or band issues**.
- **Avoid it if:**- You re running a **high-horsepower turbo diesel** (e.g., 6.7L Power Stroke) without **major upgrades**.
- You want **modern shift quality and efficiency** (consider a 6R140 or 6R80 instead).
- You re not willing to **invest in rebuilds or aftermarket parts** to keep it running smoothly.
- You need **long-term reliability without maintenance** this transmission requires **regular fluid changes and inspections**.
**Final Verdict:**The **4C4Z is a great transmission for the right application**, but it **requires attention and modifications** to reach its full potential. If you re **willing to put in the work**, it can be a **cost-effective and capable choice**. Otherwise, a **newer Ford transmission (6R140/6R80) or a well-supported aftermarket option (e.g., AOD, 4R75W) may be a better long-term solution**.
Details:
This Ford 1416390 is in overall good condition. Shipping is via USPS or UPS. Please also use the pictures to ensure a proper fit. Compatible with.
Most electronic parts are not plug and play.
part #: 4c4z4635 prices
- $18.40-$354.94
specifications engimou:
- for makes: Ford
- mpn: 4c4z-4635-ea
- part type: Engine Mount
- features: Ford Universal Joint Repair Kit
- fitment type: Direct Replacement
- modified item: No
- manufacturer warranty: Unspecified Length
payments engimou:
- wallet: Paypal
- other
- credit card: Discover
offer engimou:
- started: May 16, 2026
- availability: In Stock
- quantity: 1
- sold: 0
- options: Ship-to-home
seller engimou:
- # reviews: 87870
- rating: 99.4%
- city: Las Vegas, Nevada
shipping engimou:
- cost: $0.00
- class: Standard, Expedited
- transit: 4-10 Days
- service: Standard, Expedited
- type: Fixed
returns engimou:
- paid by: Seller
- time: 30 Days
- policy: Returns Accepted
general engimou:
- Car Truck Parts Accessories > Engines Engine Parts > Engine Mounts
- condition: Used
