FORD TRUCK Rear Drive Shaft Manual Transmission 431-03049 6.9L

( Brand: Ford Truck ), ( Manufacturer Part Number: F350 ), ( Conditions Options: 6.9l 2wd 137 Wb Rear Driveshaft ), ( Genuine Oem: Yes ), ( Ipn: 431-03049 ), ( Performance Part: No ), ( Transmission Type: Manual ), ( Warranty: 60 Day ), ( Placement On Vehicle: Rear ), ( Type: Driveshaft )

Review FORD TRUCK 6.9l Rear Drive Shaft Manual Transmission fits F350 F150 F250 2WD 1986–1987

The **Ford 431-03049 6.9L (351C) 2-Wheel Drive Rear Drive Shaft for Manual Transmission (1986 1987 F-Series)** is a robust, high-performance drivetrain component designed exclusively for Ford s legendary **F-150, F-250, and F-350** pickup trucks equipped with the iconic **351 cubic-inch (6.9L) Cleveland V8 engine** paired with a manual transmission. This drive shaft is a critical link in the powertrain system, transmitting the raw torque generated by the engine through the transmission and transfer case (where applicable) to the rear axle, propelling the vehicle with unmatched power and reliability. Built to withstand the demands of heavy-duty towing, off-road adventures, and daily hauling, this drive shaft features a **heavy-duty tubular construction** reinforced with precision-machined components, ensuring durability and longevity even under extreme conditions. The **universal joint (U-joint) and constant velocity (CV) joint** assemblies are engineered for smooth operation, minimizing vibration and wear while maintaining optimal power transfer. The **splined input and output shafts** are designed to fit seamlessly with the **Ford 8.8-inch or 9-inch rear axle housings**, as well as the **Cruise-Ranger or Ford 180-degree transfer case** (for 4WD applications, though this specific part is for 2WD configurations). This drive shaft is a direct OEM replacement, meaning it adheres to Ford s exact specifications, including the **correct shaft length, yoke angles, and balance weights**, ensuring a perfect fit and optimal performance without the need for modifications. Whether you re restoring a classic muscle truck, upgrading a workhorse F-250, or maintaining a rare F-350, this drive shaft is a **must-have component** for restoring or preserving the integrity of your vehicle s drivetrain. Its **proven compatibility** with the **1986 1987 model years** makes it an ideal choice for enthusiasts seeking authenticity and performance, while its **manual transmission-specific design** ensures seamless integration with Ford s legendary **C4 or C6 transmissions**, delivering the power and torque these legendary trucks were built to handle.

### **Pros and Cons of Buying a 1986-1987 Ford F-150/F-250/F-350 with a 6.9L Diesel (Power Stroke) 2WD Rear Drive Shaft and Manual Transmission (Part Number: 431-03049)**

---

### **Pros**

1. **Reliability of the 6.9L Diesel Engine**

- The **6.9L Power Stroke diesel** (introduced in 1983) is known for its durability, especially when properly maintained. Many units last **300,000 miles** with regular upkeep.

- The **turbocharged inline-six** provides strong torque (200-250 lb-ft), making it capable of heavy-duty towing and hauling.

- **Simpler design** compared to modern engines fewer electronic components mean fewer points of failure.

2. **Manual Transmission Option**

- **Better fuel economy** (if driven properly) compared to an automatic.

- **More control** over gear selection, useful for towing or off-roading.

- **Lower maintenance costs** no torque converter or automatic transmission fluid changes.

- Some buyers prefer the **driving experience** of a manual, especially in stop-and-go traffic.

3. **2WD Rear Drive Shaft (Manual Transmission Compatibility)**

- The **rear drive shaft (431-03049)** is a **direct-drive shaft** (no speed-reducing differential), meaning it s **lighter and simpler** than a front-drive shaft.

- Easier to **replace or repair** compared to modern CV axles.

- **No 4WD complexity** if you only need 2WD, this setup is **more straightforward** than a 4WD drivetrain.

4. **Cost Savings Compared to Modern Trucks**

- **Lower purchase price** these trucks are often sold for **$3,000 $8,000**, depending on condition.

- **Cheaper parts** replacement components (engines, transmissions, axles) are widely available and affordable.

- **Lower insurance and registration costs** compared to newer trucks.

5. **Off-Road and Heavy-Duty Potential**

- The **solid rear axle** (common in these trucks) provides **better off-road capability** than modern independent rear suspensions.

- **High ground clearance** (especially in F-250/F-350 models) allows for **rock crawling and rough terrain use**.

- **Aftermarket support** many performance and off-road parts are designed for these trucks.

6. **Simpler Electrical System**

- **No modern computer diagnostics** if something fails, it s often **mechanical rather than electronic**, making repairs easier for those with basic skills.

- **Less reliance on fuel injection** (early diesels use **mechanical fuel pumps and injectors**), which are **more forgiving** than modern systems.

7. **Nostalgia and Classic Appeal**

- For some buyers, the **vintage design** and **workhorse reputation** of these trucks are appealing.

- **Customization potential** many owners modify them for **off-road, racing, or show purposes**.

---

### **Cons**

1. **High Maintenance Requirements**

- **Diesel engines need meticulous care** fuel filters, injectors, turbochargers, and glow plugs must be **regularly serviced** to prevent failure.

- **Manual transmissions** require **precise clutch operation** and can wear out if misused (especially in stop-and-go driving).

- **No oil pressure warning** some early models lack a low-oil-pressure light, meaning **oil changes must be strictly followed**.

2. **Poor Fuel Economy (For Diesel Standards)**

- The **6.9L diesel** gets **around 8 12 MPG** in city driving and **10 15 MPG** on the highway **worse than modern diesels** (which average 20 MPG).

- **Diesel fuel costs** (especially in rural areas) can add up over time.

3. **Rust and Structural Issues**

- Many **1986 1987 trucks** suffer from **frame rust**, especially in **snowy or salted regions**.

- **Body panels** (especially on F-150s) may be **thin and prone to dents/corrosion**.

- **Suspension components** (shocks, springs, bushings) often need replacement.

4. **Limited Modern Safety Features**

- **No ABS, airbags, or modern braking systems** handling and stopping power are **less predictable** than in newer trucks.

- **Poor visibility** due to **smaller windows and less aerodynamic cab designs**.

- **No modern driver aids** (blind-spot monitoring, backup cameras, etc.).

5. **Towing and Hauling Limitations**

- **Manual transmission trucks** are **not ideal for heavy towing** clutch wear and gear selection can be **tiring and inefficient**.

- **No integrated trailer brakes** (common in modern trucks) mean **extra effort when braking with a load**.

- **Weak rear springs** on some models can lead to **sagging under heavy loads**.

6. **Emissions and Legal Restrictions**

- **Difficulty registering** in some areas.

- **Potential fines** if driven in emissions-restricted zones.

- **Diesel exhaust** (especially from older engines) can be **noisy and smelly**.

7. **Difficulty Finding Skilled Mechanics**

- **Fewer diesel specialists** work on vintage trucks compared to modern ones.

- **Parts may require special ordering** (especially for rare components).

- **Labor costs** can be high if repairs require **custom fabrication** (e.g., bent frames, custom axles).

8. **Resale Value is Low**

- These trucks **depreciate quickly** even well-maintained examples lose value over time.

- **Buyers are rare**, making it hard to sell if you decide to upgrade later.

9. **No Modern Comforts**

- **Basic interiors** with **no power features** (windows, seats, mirrors).

- **Poor insulation** cold in winter, hot in summer.

- **No modern infotainment or connectivity** (no USB, Bluetooth, etc.).

10. **Potential for Hidden Problems**

- **Fuel system issues** (leaking injectors, failed fuel pumps).

- **Turbocharger failure** (common in high-mileage diesels).

- **Transmission wear** (manuals can **grind if not shifted properly**).

- **Exhaust leaks** (early diesels often have **weak manifolds and gaskets**).

---

### **Conclusion**

You **prioritize durability and simplicity** over modern convenience.

You **plan to use it for light-duty hauling, off-roading, or as a project truck**.

You **have mechanical skills** (or access to a good mechanic) to handle maintenance.

You **don t need heavy towing** (or are okay with manual transmission limitations).

You **enjoy the classic driving experience** and don t mind lower comforts.

You **need modern safety and fuel efficiency**.

You **plan to tow heavy loads frequently** (automatic transmission is better).

You **live in an area with strict emissions laws**.

You **want a truck that holds value** or is easy to sell later.

You **prefer plug-and-play convenience** (no manual shifts, no diesel maintenance).

---

### **Final Recommendation**

- You are **looking for a low-cost, high-reliability workhorse** for **light hauling, farming, or off-roading**.

- You **enjoy working on vehicles** and are prepared for **regular maintenance** (fuel filters, injectors, clutch, drive shaft).

- You **don t mind sacrificing modern comforts** for a **simple, no-frills truck**.

- You **find one in excellent condition** (low miles, no major rust, well-documented maintenance).

- You **need a daily driver** with modern safety and fuel efficiency.

- You **plan to tow 10,000 lbs** regularly (an automatic transmission is better).

- You **live in a state with strict emissions laws** (registration may be difficult).

- You **want a truck that s easy to sell** in the future.

- **Project truck** (restore and modify for off-roading).

- **Farm/ranch work** (light hauling,

Details:

6.9L 2WD Rear Drive Shaft - Manual Transmission 86-87 Ford F150 F250 F350 ITEM: FOR T-19 WAGNER MANUAL TRANS. FORD F150 PICKUP 86 139 WB, MT; removable carrier assembly. APPROX 80 IN length . ITEM condition: Good, used condition. For items sold with Free Shipping or Flat Rate Shipping, the free shipping flat rate only applies when item is shipped to a address within continental USA.

Engines and Transmissions have a 90 day parts only warranty. The only exception would be if the engine/transmission is a CORE unit and being sold for parts.

specifications universajoin:

• for models: F350, F150, F250, 2wd
• for makes: Ford
• for years: 1986-1987
• brand: Ford Truck
• mpn: F350
• conditions options: 6.9l 2wd 137 Wb Rear Driveshaft
• genuine oem: Yes
• ipn: 431-03049
• performance part: No
• transmission type: Manual
• warranty: 60 Day
• placement on vehicle: Rear
• type: Driveshaft

payments universajoin:

• wallet: Paypal
• other
• credit card: Discover

shipping universajoin:

• type: Fixed
• class: Standard, Expedited, One-day
• cost: $0.00
• transit: 4-10 Days
• service: Standard, Expedited, Overnight

returns universajoin:

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

offer universajoin:

• sold: 0
• best offers: True
• quantity: 1
• options: Ship-to-home
• started: February 27, 2026
• availability: In Stock

general universajoin:

• Transmission Drivetrain > Driveshafts Parts > Additional Driveshaft Parts
• condition: Used

seller universajoin:

• rating: 99.2%
• # reviews: 14233
• city: Athens, Tennessee

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