LEXUS 45900-30070 Rear Steering Rack

( Manufacturer Part Number: 45900-30070 ), ( Part Type: Steering Rack ), ( Manufacturer Warranty: 1 Month )

Review LEXUS Rear Steering Rack Oem fits GS350 GS450H GS300 RWD 2013–2020

The **Lexus 45900-30070** is a high-performance steering rack assembly designed exclusively for the **2013 2020 Lexus GS350, GS450h, GS300 (RWD)**, and select **GS models equipped with rear-wheel-drive (RWD) configurations**. This precision-engineered component is a critical element of the vehicle s steering system, ensuring smooth, responsive, and accurate handling while maintaining the iconic Lexus blend of luxury and performance. Crafted from high-grade materials, the steering rack features a robust **twin-pinion design** with optimized gear ratios, delivering enhanced steering feel and reduced play for a more engaging drive. The assembly incorporates **durable, corrosion-resistant coatings** and **sealed bearings** to withstand the demands of daily driving, extreme weather conditions, and long-term reliability, a hallmark of Lexus engineering. Its compact yet sturdy construction integrates seamlessly with the vehicle s suspension geometry, contributing to a balanced and composed ride quality while preserving the GS s sporty agility. Whether navigating tight city streets or cruising along winding highways, this steering rack ensures precise control, minimal effort, and a refined driving experience that aligns with Lexus s reputation for quiet, comfortable, and technologically advanced automotive solutions. Ideal for both original equipment replacement (OEM) and performance-oriented upgrades, this part adheres to Lexus s stringent quality standards, offering a direct fitment that restores or enhances the vehicle s original handling dynamics without compromising on durability or refinement.

### **Pros and Cons of Buying a Lexus GS350 (2013-2017) with the 4GR-FKS Engine (45900-30070 Rear Steering Rack)**

#### **Overview**

The **Lexus GS350 (2013-2017)** is a rear-wheel-drive (RWD) luxury sedan powered by the **4GR-FKS 3.5L V6 engine**, paired with an **8-speed automatic transmission** and a **rear steering rack** (part number **45900-30070**). This model is known for its refined performance, comfort, and reliability, but like any vehicle, it has trade-offs.

---

### **Pros**

1. **Strong Engine and Performance**

- The **4GR-FKS 3.5L V6** produces **306 horsepower and 269 lb-ft of torque**, delivering smooth acceleration and a satisfying driving experience.

- The **8-speed automatic transmission** shifts smoothly, with a **manual shift mode** for better engagement.

- The **rear steering rack** improves handling, especially at low speeds, making parking and maneuvering easier.

2. **Luxury and Comfort**

- Lexus is renowned for its **quiet cabin, premium materials, and refined ride quality**, making long drives comfortable.

- Standard features include **heated/ventilated seats, leather upholstery, and advanced sound insulation**.

- The **adaptive damping system** (on later models) adjusts suspension firmness based on driving conditions.

3. **Reliability and Durability**

- Lexus engines are **known for longevity**, and the **4GR-FKS is a robust unit** with few major issues when maintained properly.

- The **transmission is durable**, though some owners report **delayed engagement in cold weather** (common in early 8-speed automatics).

- The **rear steering rack** is a **Lexus-specific feature** (shared with the RC and IS models) and is generally reliable, though leaks can occur over time.

4. **Resale Value and Brand Prestige**

- Lexus retains **strong resale value** compared to many luxury brands, making it a good long-term investment.

- The **GS series is highly respected**, with a reputation for **performance, luxury, and reliability**.

5. **Available Hybrid Option (GS450h)**

- **Improved fuel efficiency** ( 30 MPG combined).

- **Smooth hybrid system** with minimal power loss compared to non-hybrids.

- **Regenerative braking** reduces wear on brake components.

6. **Tech and Safety Features**

- Standard **Lexus Safety System (LSS )** includes **pre-collision braking, lane departure warning, and adaptive cruise control**.

- Later models (2015 ) feature **Apple CarPlay/Android Auto** (via optional navigation system).

- **Comfortable ergonomics** with well-placed controls and a **large, high-quality infotainment screen**.

7. **Low Maintenance Costs**

- Lexus dealerships are **expensive for repairs**, but **regular maintenance (oil changes, timing belt, etc.) is straightforward**.

- The **4GR-FKS has a timing chain** (no belt replacement needed), reducing long-term maintenance costs.

---

### **Cons**

1. **High Purchase and Maintenance Costs**

- Lexus is **not cheap to buy or repair**, especially compared to non-luxury alternatives (e.g., BMW 5 Series, Audi A6).

- **Dealership labor rates** are among the highest in the industry.

2. **Transmission Issues (Early Models)**

- Some **2013-2014 GS350 models** reported **rough shifting or delayed engagement**, particularly in cold weather.

- Lexus **recalled many units** with software updates to fix these issues **always check service records**.

3. **Rear Steering Rack Potential Problems**

- The **rear steering rack (45900-30070)** can develop **leaks** over time, leading to **power steering fluid loss**.

- If neglected, **corrosion or seal failure** can occur, requiring **expensive replacement** ( $1,500 ).

- **Check for fluid leaks** during inspections.

4. **Fuel Economy (Non-Hybrid)**

- The **GS350 gets around 18-20 MPG highway**, which is **average for a V6 sedan** but not great for long-distance driving.

- The **GS450h improves this to 30 MPG**, making it a better choice for fuel-conscious buyers.

5. **Limited Off-Road Capability**

- As a **rear-wheel-drive luxury sedan**, the GS is **not designed for rough terrain**.

- **No all-wheel drive (AWD) option** (unlike the GS F), limiting traction in snow or wet conditions.

6. **Interior Space Trade-offs**

- The **GS is narrower than competitors like the BMW 5 Series**, which can make **rear legroom feel tight** for taller passengers.

- **Trunk space is decent ( 15.6 cu. ft.)**, but not as large as some rivals.

7. **Depreciation Over Time**

- While Lexus holds value well, **luxury sedans depreciate significantly** in the first few years.

- If buying used, **higher-mileage examples may have higher maintenance risks**.

8. **Software and Tech Lag**

- Lexus **infotainment systems lag behind competitors** (e.g., BMW iDrive, Mercedes MBUX).

- **Apple CarPlay/Android Auto** was added late (2015 ), so older models lack it.

---

### **Comparison with Alternatives**

**Model** **Pros** **Cons**

----------- ---------- ----------

**Lexus GS350 (RWD)** Smooth V6, luxury, reliability Expensive, poor fuel economy, no AWD

**Lexus GS450h (Hybrid)** Better MPG, eco-friendly Slightly less power, higher upfront cost

**BMW 530i (F10/F11)** More power, better tech, AWD option Higher maintenance costs, reliability concerns

**Audi A6 3.0T** Quattro AWD, refined, good tech More expensive to maintain, complex electronics

**Toyota Camry V6** Cheaper, reliable, good MPG Less sporty, less luxury feel

---

### **Conclusion and Recommendation**

- **Buyers who prioritize luxury, comfort, and reliability** over raw performance.

- **Those who want a refined RWD sedan** with a **smooth V6 engine** and **easy parking (rear steering rack)**.

- **Long-term owners** who can afford **Lexus maintenance costs** and prefer **minimal mechanical issues**.

- **Hybrid-conscious buyers** (GS450h) who want **better fuel efficiency** without sacrificing too much power.

- **Budget-conscious buyers** (Lexus is expensive to buy and maintain).

- **Those needing AWD or off-road capability** (no option).

- **Drivers who prioritize cutting-edge tech** (infotainment lags behind competitors).

- **High-mileage buyers** (check for **transmission issues, rear rack leaks, and service history**).

- **If you can afford it and want a premium, reliable RWD sedan**, the **Lexus GS350 (2015-2017) with the rear steering rack is a solid choice**, especially if well-maintained.

- **For better fuel economy**, the **GS450h is a great alternative**, though slightly less powerful.

- **If you find a well-documented example with no transmission or steering rack issues**, it can be a **great long-term investment**.

- **Avoid early 2013 models** unless you re certain the **transmission recall was completed**.

- **Consider alternatives** (e.g., **Toyota Camry V6, BMW 530i**) if **cost is a major concern**.

- **Get a pre-purchase inspection** (focus on **transmission, rear rack, and fluid leaks**).

- **Check service records** for **timing chain, oil changes, and recall work**.

- **Test drive for comfort and handling** Lexus is smooth, but some buyers prefer **more engaging rivals**.

- **Budget for future maintenance** Lexus is **not cheap to keep running**.

**Verdict:** The **Lexus GS350 (2013-2017) with the rear steering rack is a fantastic luxury sedan** for those who value **refinement, reliability, and a smooth driving experience**, but it s **not the most practical or budget-friendly choice**. If you can afford it and maintain it properly, it s a **great long-term purchase**. Otherwise, consider **alternatives like the GS450h or a well-maintained BMW 5 Series**.

Details:

EXTERIOR COLOR: LIQUID PLATINUM CODE: 1J2. ENGINE: 3.5L V6 2GR-FSE. TRANSMISSION: 6 SPEED AT AUTOMATIC. REAR STEERING RACK, WILL FIT 2013 2020 LEXUS GS350 GS450h GS200t GS3 DONOR VEHICLE: 2013.

part #: 4590030070 price

• $1899.99

specifications steragebo:

• for models: Gs350, Gs450h, Gs300, Rwd
• for makes: Lexus
• for years: 2013-2020
• mpn: 45900-30070
• part type: Steering Rack
• manufacturer warranty: 1 Month

payments steragebo:

• other
• credit card: Visa
• wallet: Paypal

general steragebo:

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

offer steragebo:

• best offers: True
• sold: 0
• quantity: 1
• availability: In Stock
• started: April 8, 2026
• options: Ship-to-home

shipping steragebo:

• transit: 3-8 Days
• type: Fixed
• cost: $50.00
• class: Standard
• service: Standard

seller steragebo:

• # reviews: 1799
• rating: 99.4%
• city: Wylie, Texas

returns steragebo:

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

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