FORD TRUCK Dsl Steering Gear Rack 551.FD8817 6.7L HC3C-3504-BC

( Brand: Ford Truck ), ( Manufacturer Part Number: F550SD ), ( Part Type: Steering Gear Rack ), ( Genuine Oem: Yes ), ( Ipn: 551.fd8817 )

Review FORD TRUCK 6.7l Dsl Steering Gear Rack fits F550SD F450 F550 2017–2018

The **Ford 551.FD8817 2017-2018 F-Series (F-450/F-550) 6.7L Diesel Steering Gear Rack (HC3C-3504-BC)** is a precision-engineered hydraulic steering component designed exclusively for Ford s heavy-duty Super Duty lineup, delivering the robustness and reliability required for commercial and industrial applications. Part of Ford s **HC3C series**, this steering gear rack is engineered to withstand the demanding conditions of towing heavy loads, navigating rough terrain, and enduring prolonged use in demanding environments. Built with a **6.7L Power Stroke diesel engine** in mind, this rack integrates seamlessly with the truck s hydraulic system, ensuring smooth, responsive steering even under extreme stress. The **HC3C-3504-BC** features a **high-strength aluminum housing** reinforced with precision-machined components to minimize wear and maximize durability, reducing the risk of leaks or failure over time. Its **hydraulic return valve** and **pressure-compensated design** optimize fluid flow, preventing power steering loss and ensuring consistent performance in both urban and off-road settings. The rack s **direct-to-pinion connection** eliminates play, providing a firm, immediate response to driver inputs, which is critical for maintaining control in large, heavy-duty trucks. Whether hauling construction equipment, transporting oversized loads, or navigating tight spaces in a fleet operation, this steering gear rack is built to endure, offering **superior longevity and operational efficiency**. Compatible with the **2017-2018 model years** of the F-450 and F-550, this part is a **direct-fit replacement**, ensuring compatibility with existing hydraulic lines, tie rods, and steering linkages without modification. Ford s rigorous testing standards guarantee that this component meets or exceeds industry benchmarks for strength, precision, and reliability, making it an essential upgrade for fleet managers seeking to minimize downtime and maximize productivity. With its **sealed bearings, reinforced bushings, and corrosion-resistant coatings**, this steering gear rack is engineered to perform in harsh conditions, from extreme temperatures to exposure to moisture and debris, ensuring consistent operation year after year. Whether used in a new installation or as a high-quality replacement for a worn-out original component, the **HC3C-3504-BC** delivers the performance and dependability that commercial operators demand from their heavy-duty Ford Super Duty trucks.

### **Pros and Cons of Buying a 2017-2018 Ford F-450/F-550 6.7L Power Stroke Diesel with HC3C-3504-BC Steering Gear Rack**

#### **Pros**

1. **Power and Capability** The 6.7L Power Stroke diesel engine is one of the most reliable and powerful V8 diesel engines in its class, producing **475 500 HP and 975 1,050 lb-ft of torque**, making it ideal for heavy-duty towing, hauling, and off-road use.

2. **Durability and Longevity** Ford s 6.7L diesel is known for its robustness, with many units lasting **300,000 miles** with proper maintenance. The turbocharged, intercooled, and direct-injected design ensures strong performance under heavy loads.

3. **High Towing and Payload Capacity** The F-450/F-550 is rated for **up to 35,500 lbs GCWR (F-550 Super Duty)** and **20,000 lbs payload**, making it a top choice for commercial, agricultural, or heavy-duty personal use.

4. **Modern Technology and Features** These models come with **Ford s SYNC 3 infotainment system, available 12.3-inch touchscreen, backup camera, and advanced safety features** like blind-spot monitoring and adaptive cruise control (in higher trims).

5. **Aftermarket Support** The 6.7L Power Stroke has a **large aftermarket presence**, meaning parts like turbochargers, injectors, and fuel systems are widely available and often more affordable than OEM options.

6. **Good Resale Value** Compared to some competitors, the F-450/F-550 retains a strong resale value, especially in the heavy-duty truck market.

7. **Available in Multiple Configurations** Options include **crew cab, extended cab, and various bed lengths**, allowing buyers to choose based on their specific needs (e.g., work trucks, dually setups, or long-bed configurations).

8. **Reliable Transmission Options** The **6R140 automatic transmission** (standard) is smooth and durable, handling heavy loads well. Some buyers opt for **manual transmissions** (less common but available) for better control in off-road or towing scenarios.

9. **Strong Brand Reputation** Ford s Super Duty lineup has a **long history of reliability**, and the 6.7L diesel is widely trusted by fleet operators, contractors, and enthusiasts.

10. **Potential for Modifications** The truck s size and power make it a favorite for **lift kits, exhaust upgrades, and performance tuning**, allowing owners to customize it for specific applications.

---

#### **Cons**

1. **High Initial Cost** New or well-maintained used F-450/F-550 trucks are **expensive**, with prices often ranging from **$60,000 $100,000 ** depending on configuration, mileage, and condition. This can be a significant investment.

2. **Fuel Consumption** The 6.7L diesel is **thirsty**, especially when fully loaded. Expect **12 18 MPG in highway driving** and even lower in stop-and-go traffic or heavy towing. Diesel fuel costs add up quickly.

3. **Maintenance and Repair Costs** While the engine is durable, **major repairs (turbo, injectors, fuel system) can be costly**, often requiring specialized mechanics. Common issues include:

- **Turbocharger failures** (especially in high-mileage units)

- **Fuel injectors clogging or failing** (requires professional cleaning or replacement)

- **Exhaust manifold leaks** (common in older models)

- **Transmission fluid changes** (must be done at recommended intervals to prevent failure)

4. **Weight and Handling** The F-450/F-550 is **heavy**, which can affect maneuverability in tight spaces, parking, and fuel efficiency. The **steering gear rack (HC3C-3504-BC)** is solid but not as responsive as lighter trucks.

5. **Noise and Vibration** The diesel engine and turbocharger can be **loud**, especially at idle or under load. Some buyers report **excessive vibration** in certain configurations, particularly in long-bed models.

6. **Depreciation Over Time** While the resale value is decent, **heavy-duty trucks depreciate faster than passenger vehicles**, meaning the value drop is noticeable after a few years.

7. **Limited Fuel Options** Diesel fuel is **not as widely available as gasoline**, and some stations may have **lower-quality diesel**, which can affect engine performance over time.

8. **Potential for Electrical Issues** Some owners report **electrical gremlins**, particularly with **SYNC systems, sensors, or starter issues**, which can be frustrating to diagnose.

9. **Towing and Hauling Limits** While the truck is capable, **improper loading can strain the drivetrain**, leading to premature wear on the **transmission, axles, or suspension**.

10. **Resale Market Competition** Used heavy-duty trucks (especially from Ford, Ram, and Chevy) **compete heavily**, meaning buyers may need to negotiate hard or pay premium prices for well-maintained examples.

---

### **Ending Conclusion**

The **2017-2018 Ford F-450/F-550 with a 6.7L Power Stroke diesel and HC3C-3504-BC steering rack** is a **powerful, reliable, and capable workhorse** suited for those needing **heavy-duty towing, hauling, or commercial use**. It excels in **durability, torque, and aftermarket support**, making it a favorite among professionals. However, **high upfront costs, fuel inefficiency, and maintenance expenses** are significant drawbacks that must be carefully considered.

If you **prioritize raw power, longevity, and can handle the costs**, this truck is an excellent choice. If you **need better fuel economy, lower operating costs, or lighter handling**, alternatives like a **Ram 2500/3500 with a Cummins or Duramax** or a **Chevy Silverado HD with a Duramax** might be worth evaluating.

---

### **Recommendation**

- You need a **heavy-duty truck for commercial, agricultural, or extreme towing** (20,000 lbs).

- You can **afford the upfront cost and maintenance** (budget for **$10,000 $15,000/year** in upkeep).

- You plan to **keep it for 10 years** and drive **high mileage** (300,000 miles).

- You **value Ford s reliability and aftermarket support** over fuel efficiency.

- You **prioritize fuel economy** (diesel will cost more per mile than gasoline).

- You **can t handle the weight and size** (parking, maneuvering, and fuel stops may be difficult).

- You **don t have access to proper maintenance** (diesel trucks require **regular turbo cleaning, fuel system checks, and transmission fluid changes**).

- You **plan to sell it within 5 years** (depreciation will eat into your investment).

- **Get a pre-purchase inspection (PPI)** from a **trusted diesel mechanic** to check for **turbo, injectors, transmission, and suspension issues**.

- **Consider a lower-mileage example (under 100,000 miles)** if possible, but be prepared for higher prices.

- **Factor in fuel costs** calculate how much you ll spend on diesel over the truck s lifespan.

- **Explore financing options** heavy-duty trucks may require **specialized loans** with higher interest rates.

**Final Verdict:** This truck is **one of the best in its class for those who need brute strength and reliability**, but it s **not for casual drivers or those on a tight budget**. If you re serious about its capabilities, it s a **solid long-term investment** just ensure you re prepared for its demands.

Details:

No expedited shipping is available.

part #: f550sd prices

• $399.99-$538.44

specifications steragebo:

• for models: F550sd, F450, F550
• for makes: Ford
• for years: 2017-2018
• brand: Ford Truck
• mpn: F550sd
• part type: Steering Gear Rack
• genuine oem: Yes
• ipn: 551.fd8817

payments steragebo:

• other
• credit card: Mastercard
• wallet: Google-pay

seller steragebo:

• rating: 100.0%
• city: Marion, North Carolina
• # reviews: 1992

offer steragebo:

• sold: 0
• availability: In Stock
• started: February 9, 2026
• options: Ship-to-home
• quantity: 1

shipping steragebo:

• carrier: UPS
• service: UPS Ground
• class: Standard
• cost: $40.00
• transit: 3-9 Days
• type: Fixed

returns steragebo:

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

general steragebo:

• condition: Used
• Car Truck Parts Accessories > Steering Suspension > Gearboxes, Rack Pinions

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