DRIVETRAIN DIRECT GPTTNN770BA36AA Automatic Transmission 400-03557 4R100 1C2Z-7000-DB 1C2Z-DB

( Brand: Drivetrain Direct ), ( Manufacturer Part Number: GPTTNN770BA36AA ), ( Part Type: Transmission ), ( Transmission Speeds: 4-speed ), ( Universal Fitment: No ), ( Ipn: 400-03557 ), ( California Prop 65 Warning: This Product Contains A Chemical Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. )

Review DRIVETRAIN DIRECT Reman Ford Automatic Transmission Oem Tag Id fits 2000–2003

The **GPTNN770BA36AA Drivetrain Unit (2000 2003 Ford 4R100 Automatic Transmission, Part Numbers 1C2Z-7000-DB and 1C2Z-DB)** is a high-performance, direct-fit replacement for the original transmission in select Ford full-size trucks, SUVs, and vans equipped with the legendary **4R100 four-speed automatic transmission**. Engineered to meet or exceed OEM specifications, this drivetrain assembly combines precision engineering with robust materials to ensure reliable operation, extended longevity, and seamless integration with the vehicle s powertrain. The **4R100** is renowned for its durability and smooth shifting capabilities, making it a staple in Ford s lineup from the late 1990s through the early 2000s, particularly in models like the **F-150, Excursion, Expedition, E-150, and E-350**. This transmission features a **torque converter with a built-in pump and stator**, designed to efficiently transfer power from the engine to the drivetrain while maintaining optimal fluid circulation for cooling and lubrication. The **valve body**, a critical component for shift quality and hydraulic control, is meticulously calibrated to deliver crisp, predictable shifts between **Park, Reverse, Neutral, Drive, and Low** ranges, ensuring a responsive and user-friendly driving experience. The **planetary gearset** within the transmission is constructed from hardened steel components, allowing it to withstand the high torque demands of heavy-duty applications without compromising efficiency. The **output shaft** is precision-machined to minimize backlash and ensure smooth power delivery to the differential, while the **input shaft** interfaces seamlessly with the engine s flexplate, reducing vibration and enhancing overall drivability. This drivetrain unit is fully compatible with **Ford s 5.4L Triton V8, 7.3L Power Stroke diesel, and 4.6L Modular V8 engines**, making it an ideal upgrade or replacement for vehicles requiring enhanced performance or those experiencing transmission failure. Whether replacing a worn-out original unit or upgrading for better durability, this **GPTNN770BA36AA** drivetrain assembly offers a cost-effective solution that restores factory reliability while reducing the risk of premature wear. Built to withstand the rigors of daily driving, towing, or off-road adventures, it represents a superior alternative to aftermarket conversions, providing the confidence of a direct OEM replacement with the added assurance of extended service life. Proper installation, including fluid flush and torque converter matching, is recommended to maximize performance and longevity.

### **Pros and Cons of Buying a Drivetrain (GTNN770BA36AA) for a 2000-2003 Ford 4R100 Automatic Transmission (1C2Z-7000-DB / 1C2Z-DB)**

1. **OEM Quality and Reliability** This is a genuine Ford drivetrain component, meaning it meets the manufacturer s specifications and is designed to integrate seamlessly with the 4R100 transmission. Ford s engineering ensures compatibility with the vehicle s powertrain systems.

2. **Long-Term Durability** The 4R100 is a robust transmission known for its strength, especially in heavy-duty applications. A new or rebuilt drivetrain from this series can provide years of reliable service if properly maintained.

3. **Compatibility with Aftermarket Upgrades** Since this is a stock drivetrain, it works well with common aftermarket modifications, such as performance chips, upgraded clutches, or torque converters. It also supports bolt-on upgrades like larger flywheels or dual-mass flywheels (DMF) for smoother power delivery.

4. **Warranty Coverage** Purchasing from a reputable dealer or Ford-approved service center may include a warranty, offering protection against premature failure. Some aftermarket suppliers also offer limited warranties on rebuilt units.

5. **Better Performance in Towing Applications** The 4R100 is a heavy-duty transmission, making it suitable for towing trailers, boats, or other loads. A fresh drivetrain ensures optimal shifting and torque handling, reducing the risk of failure under heavy loads.

6. **Easier Maintenance and Repairs** Since it s a stock component, finding mechanics familiar with the 4R100 is straightforward. Parts and service manuals are widely available, simplifying repairs and fluid changes.

7. **Resale Value** A vehicle with a stock or rebuilt drivetrain retains better resale value compared to one with a modified or unknown transmission history.

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1. **Higher Upfront Cost** A new or rebuilt drivetrain from Ford or an authorized supplier can be expensive, especially if purchasing from a dealership. Aftermarket rebuilt units may offer cost savings but vary in quality.

2. **Potential for Overkill in Light-Duty Applications** If the vehicle is not frequently towed or subjected to heavy loads, the 4R100 s robustness may be unnecessary, leading to higher maintenance costs over time compared to a lighter-duty transmission.

3. **Complexity in Installation** Replacing a drivetrain requires significant mechanical skill, including torque converter alignment, fluid flushes, and proper calibration. DIY installation is risky and often not recommended unless the mechanic is highly experienced.

4. **Limited Aftermarket Support for Modifications** While the 4R100 supports some upgrades, extreme modifications (e.g., forced induction, extreme torque increases) may void warranties or require additional reinforcement, increasing costs.

5. **Potential for Misapplication** If the drivetrain is not properly matched to the engine s power output, it could lead to premature wear. For example, pairing a high-horsepower engine with a stock 4R100 without a performance torque converter or clutch may reduce longevity.

6. **Depreciation Risk** If the vehicle is not well-maintained or used in harsh conditions, the drivetrain may still fail prematurely, leading to unexpected repair costs.

7. **Availability and Lead Times** Genuine Ford drivetrain parts may have longer lead times, especially for older models. Aftermarket options can be faster but may lack the same level of quality control.

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The **GTNN770BA36AA drivetrain for the 2000-2003 Ford 4R100** is a solid choice for owners seeking reliability, especially in towing or heavy-duty applications. Its OEM quality, durability, and compatibility with aftermarket upgrades make it a strong investment for those who prioritize longevity and performance. However, the higher cost, complexity of installation, and potential overkill for light-duty use must be carefully considered.

- **Towing vehicles** (trucks, SUVs, or modified cars pulling trailers).

- **High-mileage or heavily used vehicles** needing a transmission overhaul.

- **Enthusiasts** who want to maintain stock reliability while allowing for minor upgrades.

For **less demanding applications**, a rebuilt aftermarket unit or a lighter-duty transmission (if compatible) may offer a better cost-to-benefit ratio.

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- **If budget allows**, purchase a **genuine Ford rebuilt drivetrain** from an authorized dealer for maximum reliability and warranty coverage.

- **For cost savings**, consider a **high-quality aftermarket rebuilt unit** from a reputable supplier (e.g., **Transmission Builders, Jegs, or local transmission shops with strong reviews**).

- **Ensure proper installation** by a professional mechanic to avoid misalignment or calibration issues.

- **Pair with complementary upgrades** (e.g., performance torque converter, clutch, or fluid) if modifying the vehicle for higher performance.

- **Maintain regularly** with proper fluid changes and inspections to extend the drivetrain s lifespan.

Ultimately, the **4R100 drivetrain is a wise investment for those who need a durable, high-performance transmission**, but it requires careful consideration of cost, application, and installation to justify the expense.

Details:

Its that easy. 100% Dynamo meter Tested: Every transmission is rigorously tested on a Dino to verify correct pressures, shift quality, and torque converter lockup, ensuring flawless performance right out of the box. Our Re manufacturing Process: Every transmission undergoes a comprehensive re manufacturing process. Guaranteed Fitment Program:: Buy with total confidence.

Labor is covered at $50/hr, $70/hr or $90/hr depending on the products warranty coverage. With Drivetrain, you get no hassle and hidden fees just a simple, convenient process handled by our expert team. Coverage up to $200 for Towing and/or Rental Car. View specific Warranty Coverage in below.

Drivetrain Direct has Your Back. Have a question about fitment or condition. We begin with complete disassembly and media blasting of the case. Precision Rebuilt Valve Body: The valve body is completely reconditioned, with bores machined as needed.

All solenoids are tested to meet or exceed OEM specifications for crisp, reliable shifting. That's the Drivetrain Direct way. All internal components are thoroughly cleaned and inspected for wear, with bushings replaced as needed. Installation-Ready: Arrives complete with a new torque converter and pre-filled high-quality synthetic fluid to simplify your installation process.

After meticulous reassembly to precise torque specs, each unit is 100% dynamo meter-tested verify pressures, shift quality, and converter lockup, ensuring reliable, out-of-the-box performance. The valve body is fully reconditioned, with solenoids tested to meet OEM duty cycles. Rates are based on the delivery address provided at time or order.

part #: gpttnn770ba36aa prices

• $45.00-$275.00

specifications autotransmissionsgo:

• for makes: Ford
• for years: 2000-2003
• brand: Drivetrain Direct
• mpn: Gpttnn770ba36aa
• part type: Transmission
• transmission speeds: 4-speed
• universal fitment: No
• ipn: 400-03557
• california prop 65 warning: This Product Contains A Chemical Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm.

general autotransmissionsgo:

• condition: Remanufactured
• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission

payments autotransmissionsgo:

• credit card: Mastercard
• other
• wallet: Paypal

offer autotransmissionsgo:

• sold: 0
• options: Ship-to-home
• quantity: 1
• started: April 13, 2026
• availability: In Stock

seller autotransmissionsgo:

• rating: 100.0%
• city: Hinton, Virginia
• # reviews: 15

returns autotransmissionsgo:

• policy: Returns Accepted
• paid by: Buyer
• time: 14 Days

shipping autotransmissionsgo:

• type: Fixed
• service: Flat Rate Freight
• class: Freight
• cost: $949.00

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