TOYOTA 45312-35100 Solid Axle Steering Gear Mount

( Manufacturer Part Number: 45312-35100 ), ( Type: Steering Gear ), ( Manufacturer Warranty: 30 Day ), ( Fit For: Power ), ( Universal Fitment: No ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review TOYOTA Pickup 1984 85 Solid Axle Used Steering Gear Mount fits 4RUNNER 4X4 1979-85–1984-85

The **Toyota 45312-35100** is a critical, high-performance steering gear mount designed specifically for the **1979 1985 Toyota 4Runner (and its early 4x4 predecessor, the Hilux Surf)**, with a particular emphasis on models from **1984 1985** that featured the **solid axle front suspension**. This robust, heavy-duty component serves as the foundational link between the steering gearbox and the vehicle s frame, ensuring precise alignment, smooth operation, and long-term durability especially in rugged, off-road conditions where misalignment or wear can compromise handling and safety.

Crafted from **high-strength steel**, the **45312-35100** is engineered to withstand the demanding forces exerted by the 4Runner s solid front axle setup, which is known for its durability but also prone to stress on suspension and steering components. The mount features a **reinforced gusseted design**, providing enhanced rigidity to prevent flexing under heavy loads, sudden impacts, or aggressive off-road maneuvers. Its **precision-machined mounting holes** ensure a secure, vibration-dampening fit to the vehicle s frame rails, reducing unnecessary wear on both the mount itself and the steering linkage. This component is particularly vital for maintaining proper **caster and kingpin inclination**, which directly affects steering feel, tire wear, and overall vehicle stability whether navigating rough trails, steep inclines, or tight urban turns.

For restoration enthusiasts and off-roaders seeking to restore or upgrade their **1984 1985 4Runner s** original factory integrity, the **45312-35100** is an essential OEM replacement part that guarantees compatibility with the vehicle s original suspension geometry. Unlike aftermarket alternatives that may compromise fitment or longevity, this genuine Toyota part adheres to strict manufacturing tolerances, ensuring seamless integration with the **steering column, tie rods, and frame rails**. Its **durable rubber bushings** (where applicable) absorb road vibrations, reducing fatigue on the steering system and extending the lifespan of connected components like the **rack-and-pinion or recirculating-ball steering gear**. Whether used in a classic restoration project, a heavy-duty off-road build, or as a preventive maintenance upgrade, this mount is a testament to Toyota s engineering legacy delivering both reliability and performance for those who demand the best from their rugged four-wheel-drive vehicles.

### **Pros and Cons of Buying a 1979 1985 Toyota 4Runner (4WD, Solid Axle, Steering Gear Mount: 45312-35100)**

#### **Pros**

1. **Rugged Reliability** The first-generation 4Runner (1984 1985) is known for its durability, especially in off-road conditions. Toyota s solid-axle design and simple mechanical systems make it a workhorse for rugged environments.

2. **Off-Road Capability** With a solid rear axle, locking rear differential (on some models), and high ground clearance, this truck is well-suited for trails, dirt roads, and light overlanding. The 45312-35100 steering gear mount is a common part, meaning replacement or repair is straightforward.

3. **Classic Toyota Build Quality** Early 4Runners were built with solid engineering, and many still run reliably with proper maintenance. The engine (typically the 22R or 22R-E) is a proven workhorse.

4. **Modularity & Upgrade Potential** The 4Runner s design allows for easy modifications, including lift kits, aftermarket axles, and suspension upgrades. The solid-axle setup is a favorite among off-road enthusiasts.

5. **Lower Cost of Ownership (Compared to Modern Trucks)** Parts are widely available, labor costs are reasonable, and fuel efficiency (for its class) is decent. A well-maintained example can be a budget-friendly alternative to newer 4x4s.

6. **Resale Value for Enthusiasts** Classic 4Runners hold value among collectors and off-roaders, especially if they are in good condition or have been restored.

7. **Simple Mechanics** Fewer electronic components mean fewer things can go wrong. Basic repairs (like replacing the steering gear mount) are manageable with basic tools.

---

#### **Cons**

1. **Aging Chassis & Rust** Many first-gen 4Runners suffer from rust, especially in the frame rails, subframe, and wheel wells. A thorough inspection is critical before purchase.

2. **Outdated Safety Features** No modern safety tech (airbags, stability control, traction control). The driving experience is more basic, with less refinement than newer trucks.

3. **Poor Fuel Economy** The 22R engine (2.4L) is not fuel-efficient by today s standards, especially when towing or driving off-road. Expect around **12 16 MPG combined**.

4. **Comfort & Ride Quality** The solid rear axle and stiff suspension make for a rough ride on pavement. Road noise and vibration are noticeable compared to modern trucks.

5. **Limited Modern Conveniences** No power steering (on early models), basic interior, and minimal storage space. Modern amenities like Bluetooth, USB ports, and advanced infotainment are nonexistent.

6. **Part Wear & Replacement Costs** While parts are cheap, some components (like the steering gear mount, driveshafts, and transfer case) wear out over time and may require frequent attention.

7. **Driving Dynamics** The high seat height and long wheelbase can make parking and maneuvering in tight spaces difficult. The steering is less responsive than modern trucks.

8. **Emissions & Modern Compliance** Some older 4Runners may not pass emissions tests in stricter states, requiring modifications or a smog exemption.

---

### **Conclusion**

The **1979 1985 Toyota 4Runner with the 45312-35100 steering gear mount** is a **great choice for off-road enthusiasts, weekend warriors, or those seeking a rugged, low-maintenance work truck** provided it is in **good mechanical condition and free of major rust**. It excels in durability, simplicity, and aftermarket support but falls short in comfort, fuel efficiency, and modern safety features.

If you prioritize **off-road capability, reliability, and a nostalgic driving experience**, this truck is worth considering. However, if you need **a daily driver with modern comforts, fuel economy, or safety tech**, a newer 4x4 (like a modern 4Runner, Wrangler, or Tacoma) would be a better fit.

---

### **Recommendation**

- You plan to use it **primarily off-road or for heavy-duty tasks** (towing, hauling, trail use).

- You are **prepared to inspect for rust, test the steering gear mount, and perform maintenance**.

- You enjoy **classic Toyota mechanics and don t mind a rougher ride**.

- You find a **well-documented example with service records** (preferably under 150,000 miles).

- You need **a comfortable, fuel-efficient daily driver**.

- You want **modern safety features or advanced tech**.

- The truck shows **signs of frame rust, leaking differentials, or a worn steering gear mount**.

- You re not willing to **budget for eventual repairs** (e.g., driveshafts, transfer case, suspension).

- **Get a pre-purchase inspection** (especially for rust and steering/axle condition).

- **Test the steering gear mount** (listen for grinding or play).

- **Check for rust** in critical areas (frame, subframe, wheel wells).

- **Consider a restored or lightly used example** if possible.

For the right buyer, this 4Runner is a **fantastic investment** for the wrong one, it could become a **money pit**. If you re serious, prioritize **condition over age** and treat it like a project if needed.

Details:

It is a genuine Toyota part, manufactured in the USA, and carries 30-day manufacturer warranty. The product is a used steering gear mount for 1979-85 Toyota Pickup and 1984 85 4Runner 4X4 with solid axle. This steering gear mount is a reliable and high-quality component for maintaining the system of these specific vehicle model's. The part number is 45312-351 specifically designed for power steering applications.

part #: 4531235100 prices

• $48.00-$65.00

specifications steragebo:

• for models: 4x4, 4runner
• for makes: Toyota
• for years: 1979-85-1984-85
• mpn: 45312-35100
• type: Steering Gear
• manufacturer warranty: 30 Day
• fit for: Power
• universal fitment: No
• vintage part: Yes
• country of origin: United States

seller steragebo:

• rating: 100.0%
• city: Eugene, Oregon
• # reviews: 76

payments steragebo:

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

offer steragebo:

• started: March 22, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• sold: 0
• best offers: True

shipping steragebo:

• transit: 4-8 Days
• service: USPS Ground Advantage
• carrier: USPS
• type: Calculated
• class: Standard
• cost: $64.53

returns steragebo:

• policy: No Returns

general steragebo:

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

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