FORD Power Steering Gear Box RF-D7TC-3550-AB

( Manufacturer Part Number: RFD7TC3550AB ), ( Type: Steering Gear ), ( Oe/oem Part Number: Rf-d7tc-3550-ab ), ( Vintage Part: Yes )

Review FORD Power Steering Gear Box Pn fits F250 F350 1978–1979

The **Ford RF-D7TC-3550-AB** power steering gearbox is a meticulously engineered component designed exclusively for the **1978 and 1979 Ford F-Series trucks**, including the **F-250 and F-350** models, offering smooth, responsive steering and reliable performance under heavy loads. This gearbox is a critical part of the truck s hydraulic power steering system, ensuring precise control and reducing driver fatigue during long hauls or demanding towing tasks. Built with Ford s signature durability in mind, the **RF-D7TC-3550-AB** features a robust **cast aluminum housing** that resists warping and corrosion, while its **precision-machined internal components** including the recirculating ball steering rack, sealed bearings, and a high-performance **steering pump interface** work in harmony to deliver consistent, low-effort steering even in extreme conditions. The gearbox is engineered to accommodate the **heavy-duty steering requirements** of these larger F-Series trucks, providing optimal leverage while maintaining stability and minimizing wear over time. Whether used in commercial fleets, off-road applications, or as a restoration part for classic trucks, this gearbox is a direct-fit replacement, ensuring seamless integration with the original steering linkage, tie rods, and hydraulic lines. Its **OEM-level quality** and **compatibility with modern hydraulic systems** make it an ideal choice for truck owners seeking to restore or upgrade their vehicle s handling without compromising on performance or longevity.

### **Pros and Cons of Buying a Ford RF-D7TC-3550-AB Power Steering Gearbox (1978-1979 F-250/F-350)**

1. **Reliability in Classic Trucks** The RF-D7TC-3550-AB is a well-known power steering gearbox used in Ford s heavy-duty trucks from the late 1970s. Many of these systems were built to last, especially if maintained properly.

2. **Availability of Parts** Being a classic component, replacement parts (seals, pumps, hoses, and even full rebuild kits) are still available from aftermarket suppliers and Ford s legacy parts network.

3. **Proven Design** The hydraulic power steering system in these trucks was robust for its time, and many original units still function well if they haven t been neglected.

4. **Modification Potential** If you re restoring or modifying a classic truck, this gearbox can be swapped with modern alternatives, though compatibility may require some adjustments.

5. **Nostalgia & Collectibility** For enthusiasts, owning a piece of automotive history can be rewarding, especially if the truck is well-preserved.

6. **Lower Cost Than New Systems** Compared to modern power steering systems, this gearbox is relatively inexpensive to acquire, though labor costs for installation may apply.

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1. **Age-Related Wear** If the gearbox is from a 1978-1979 truck, it may have internal wear (worn seals, leaks, or hydraulic fluid degradation) even if the truck was well-maintained.

2. **Hydraulic System Dependence** Older power steering relies on hydraulic pressure, which can fail if the pump, hoses, or fluid degrade. Modern electric power steering is more reliable in this regard.

3. **Limited Modern Compatibility** If you plan to use this gearbox in a restored truck, you may need to source matching components (like the steering column, pump, and hoses) to ensure proper function.

4. **Potential for Hidden Damage** Without a thorough inspection, internal damage (bent gears, cracked housing, or seized components) could go unnoticed until after purchase.

5. **Maintenance Requirements** Hydraulic systems require regular fluid changes and seal inspections to prevent leaks and failure.

6. **Resale Value** Classic parts like this may not hold significant resale value unless the truck is in excellent condition or part of a collection.

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The **Ford RF-D7TC-3550-AB power steering gearbox** is a viable option if you re restoring or maintaining a 1978-1979 F-250/F-350 with a hydraulic power steering system. It offers reliability, availability of parts, and a nostalgic appeal, but it comes with the drawbacks of age-related wear and the need for careful maintenance.

If you re looking for a **long-term, low-maintenance solution**, consider evaluating whether a **modern electric power steering system** (if compatible) might be a better investment. However, if you re committed to preserving the original character of your truck and are prepared for potential repairs, this gearbox can be a solid choice **provided it is thoroughly inspected before purchase.**

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- You re restoring a classic Ford truck and want to maintain authenticity.

- You re willing to invest time in inspection, maintenance, and potential repairs.

- You can source matching components (pump, hoses, fluid) for proper function.

- You want a hassle-free, modern power steering system.

- The gearbox shows signs of leaks, excessive play, or internal damage without a full rebuild.

- You re not prepared for the possibility of needing to replace seals, hoses, or the pump soon.

**Best Practice:** Before purchasing, have a trusted mechanic inspect the gearbox for leaks, proper hydraulic pressure, and internal condition. If possible, test it in the truck to ensure smooth operation. If buying used, consider a **rebuilt or remanufactured unit** from a reputable supplier to reduce risk.

Details:

Used 1978 1979 FORD F250 F350 POWER STEERING GEAR BOX PN: RF-D7TC-3550-AB. Removed from a 1978 F250. No core necessary.

part #: rfd7tc3550ab price

• $250.00

specifications steragebo:

• for models: F250, F350
• for makes: Ford
• for years: 1978-1979
• mpn: Rfd7tc3550ab
• type: Steering Gear
• oe/oem part number: Rf-d7tc-3550-ab
• vintage part: Yes

returns steragebo:

• policy: No Returns

seller steragebo:

• rating: 100.0%
• # reviews: 3123
• city: Stroudsburg, Pennsylvania

payments steragebo:

• wallet: Paypal
• other
• credit card: Discover

offer steragebo:

• started: May 10, 2026
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• sold: 0
• best offers: True

general steragebo:

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

shipping steragebo:

• carrier: FedEx, UPS
• cost: $38.32
• class: Standard, Economy
• service: FedEx Ground / FedEx Home Delivery, UPS Ground, FedEx Ground Economy
• transit: 4-9 Days
• type: Calculated

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