GM ST5651Z El Power Steering Pitman Arm Skylark/

( Brand: Gm ), ( Manufacturer Part Number: ST5651Z ), ( Type: Pitman Arm ), ( Country Of Origin: United States )

Review GM Skylark/ El Power Steering Pitman Arm Each fits SKYLARK CHEVELLE CAMINO CUTLASS 1964-67

The **GM St5651Z Pitman Arm** is a meticulously crafted, high-performance replacement component designed specifically for the iconic 1964 through 1967 Chevrolet Skylark, Chevelle, El Camino, and Cutlass models, ensuring seamless integration with their classic power steering systems. This precision-engineered part is forged from durable, high-grade steel, engineered to withstand the demands of daily driving while maintaining the original vehicle s handling dynamics and steering responsiveness. The St5651Z Pitman Arm features a robust, machined shaft with a smooth, polished finish that minimizes friction and wear, allowing for effortless operation of the steering mechanism. Its universal compatibility ensures a perfect fit, eliminating the need for modifications or adjustments, and its robust construction guarantees long-lasting durability, even under rigorous use. Whether restoring a vintage muscle car to its former glory or upgrading an existing vehicle for enhanced performance, this Pitman Arm delivers the reliability and precision expected from a genuine GM replacement part. Built to meet the exacting standards of the original equipment manufacturer, it restores the original steering feel and functionality, making it an indispensable component for enthusiasts seeking authenticity and performance in their classic Chevrolet.

### **Pros and Cons of Buying a 1964 1967 GM St5651Z Power Steering Pitman Arm (Skylark/Chevelle/El Camino/Cutlass)**

#### **Pros**

1. **Reliability and Durability** The St5651Z power steering pump is a robust, mechanically simple design that has stood the test of time. Many examples still function perfectly after decades of use, especially when properly maintained.

2. **Widespread Availability of Parts** As a classic GM component, replacement parts (seals, belts, hoses, and even full pumps) are relatively easy to find, both new and used. Aftermarket suppliers and salvage yards often carry these parts.

3. **Proven Performance** The St5651Z is known for smooth, consistent power steering operation when in good condition. Unlike some modern systems, it lacks electronic failures, making it a reliable choice for vintage vehicles.

- **Chevelle (Skylark, Super Sport, SS)**

- **El Camino**

- **Cutlass (some early models)**

- **Impala (some years)**

- **Other GM full-size and intermediate models**

This makes it a versatile upgrade or replacement option.

5. **Mechanical Simplicity** Unlike modern hydraulic or electric power steering systems, the St5651Z has fewer electronic components, reducing the risk of complex malfunctions. Basic maintenance (fluid changes, belt tension) keeps it running well.

6. **Aesthetic and Vintage Appeal** For enthusiasts restoring or modifying classic GM vehicles, using an original or period-correct power steering system enhances authenticity, which is valuable in concours and show circles.

7. **Lower Cost Compared to Modern Systems** While not cheap, the St5651Z is significantly less expensive than installing a modern power steering system (hydraulic or electric) in a vintage car. Rebuilding or replacing it is often more affordable than overhauling a contemporary setup.

8. **Easy to Work On** The design is straightforward, requiring basic tools for maintenance. Many mechanics and DIYers are familiar with it, making repairs less intimidating.

---

#### **Cons**

1. **Aging Components** Like all mechanical systems, the St5651Z can develop leaks over time, particularly at the seals, hoses, and connections. Older examples may require frequent attention to prevent fluid loss.

2. **Maintenance Requirements** Proper upkeep is essential. The power steering fluid must be changed regularly (every 2 3 years or 24,000 36,000 miles), and the belt should be inspected for wear. Neglect can lead to premature failure.

3. **Limited Modern Fluid Compatibility** While the St5651Z can use modern power steering fluid, some high-performance or synthetic blends may not be ideal. Original GM power steering fluid (or a compatible substitute like Mobil 1 or Valvoline) is often recommended to avoid seal swelling or leaks.

4. **Potential for Internal Wear** Over time, the internal components (rotor, vanes, or pump housing) can wear out, leading to reduced pressure or a "spongy" steering feel. Rebuilding or replacing the pump may be necessary if this occurs.

5. **Noise Issues** A worn belt, loose pulley, or low fluid level can cause whining or grinding noises. While not always serious, these can be annoying and may indicate impending failure.

6. **Limited Lifespan Compared to Modern Systems** While durable, the St5651Z is not as long-lasting as some contemporary power steering pumps, especially if not maintained. Expect it to last 100,000 miles with proper care, but wear is inevitable.

7. **Specialized Tools for Rebuilding** While not extremely difficult, rebuilding the St5651Z requires precision tools (like a rotor puller) and some mechanical skill. Those without experience may need to seek professional help.

8. **Environmental Concerns with Fluid** Older power steering fluid can be toxic and harmful to the environment. Proper disposal is required, and modern alternatives may be preferable for eco-conscious owners.

---

### **Conclusion**

The **GM St5651Z power steering pump** is an excellent choice for enthusiasts restoring or maintaining classic GM vehicles from the mid-1960s. Its reliability, widespread availability of parts, and mechanical simplicity make it a practical and authentic option. However, it requires regular maintenance to prevent leaks and wear, and its lifespan is not infinite especially if neglected.

For those prioritizing **authenticity, ease of repair, and cost-effectiveness**, the St5651Z is a strong recommendation. For modern drivers seeking **long-term reliability with minimal upkeep**, a modern hydraulic or electric power steering system might be preferable, though it sacrifices vintage charm.

If you re restoring a **Skylark, Chevelle, El Camino, or Cutlass** and want a period-correct power steering solution, the St5651Z is a **solid, well-proven choice** just be prepared for routine maintenance.

### **Final Recommendation**

- **Buy it if:** You re restoring a classic GM vehicle, want a reliable vintage power steering system, and are willing to maintain it properly.

- **Avoid it if:** You prefer modern convenience, dislike routine maintenance, or are not comfortable with basic mechanical repairs.

- **Best for:** Enthusiasts who value authenticity, mechanical simplicity, and the satisfaction of working with a proven, time-tested component.

For most classic GM owners, the **St5651Z remains a top-tier power steering solution** just treat it with the care it deserves.

Details:

This high-quality pitman arm is a reliable and essential component for maintaining the steering system of your vintage car. New only on 1965 old's 442 for 2 months product is a pitman arm designed 1964-67 Skylark, Chevelle, El Camino, and Cutlass vehicles. In the USA, this power steering pitman arm is a crucial component for ensuring smooth and efficient performance in these classic cars. The part is identified by the manufacturer number ST5651Z, making it easy to identify and install correct for your vehicle.

part #: st5651z prices

• $40.00-$95.00

specifications pitmanidlear:

• for models: Skylark, Chevelle, Camino, Cutlass
• for years: 1964-67
• brand: Gm
• mpn: St5651z
• type: Pitman Arm
• country of origin: United States

general pitmanidlear:

• condition: Used
• Car Truck Parts Accessories > Steering Suspension > Pitman Idler Arms

payments pitmanidlear:

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

returns pitmanidlear:

• policy: No Returns

offer pitmanidlear:

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

shipping pitmanidlear:

• class: Standard
• service: USPS Ground Advantage
• carrier: USPS
• type: Fixed
• transit: 3-9 Days
• cost: $0.00

seller pitmanidlear:

• # reviews: 510
• city: Las Vegas, Nevada
• rating: 100.0%

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