1. Seats Interior For Sale
  2. sku: 20820450232003741
  3. MAZDA RC17TT40X

MAZDA RC17TT40X Rear Row Left Driver Seat Lower Cushion 2ND Bottom

fits model: Cx-9. make: Mazda. year: 2017–2023.

Rc17tt40x Mazda 2017-2023 Cx-9 Rear 2nd Row Left Driver Side Seat Lower Cushion Bottom Oem

( Manufacturer Part Number: RC17TT40X ), ( Part Type: Driver Seat Cushion ), ( Color: Gray ), ( Headrest Type: Detachable ), ( Material: Leather ), ( Vintage Part: No ), ( Placement On Vehicle: Driver Side, Left, Rear, Second Row ), ( Seat Type: Seat Cushion ), ( Features: Easy Clean )

Review MAZDA Rear 2nd Row Left Driver Side Seat Lower Cushion Bottom Oem fits CX-9 2017–2023

The **Mazda RC17TT40X (2017 2023) CX-9 Rear Second-Row Left Driver Seat Lower Cushion Bottom** is a meticulously engineered, high-performance automotive component designed to deliver uncompromising comfort, durability, and precision seating for the rear passenger area of Mazda s flagship SUV. Part of Mazda s signature **Skyactiv-Technology** lineup, the CX-9 s second-row seating system is crafted with a blend of ergonomic sophistication and structural integrity, ensuring both luxury and functionality for long drives, road trips, and daily commutes. This specific **lower cushion bottom** a critical component of the left-side driver s seat in the rear bench is constructed from a **high-density, high-resilience polyurethane foam** reinforced with a **multi-layered, heat-bonded fabric overlay**, providing optimal support while maintaining a plush yet responsive feel. The design incorporates **contoured cutouts and strategic padding zones** to enhance weight distribution, reduce fatigue, and accommodate varying body types, making it ideal for both adults and older children. Engineered to withstand the demands of daily use, this cushion bottom features **abrasion-resistant stitching** and **UV-stabilized materials** to prevent premature wear, ensuring longevity even under prolonged exposure to sunlight or harsh weather conditions. The **modular construction** allows for easy removal and replacement, simplifying maintenance and customization, whether for aesthetic upgrades or functional adjustments. Whether paired with the standard **leather or Alcantara upholstery** or aftermarket alternatives, this lower cushion bottom maintains its structural integrity, contributing to the overall **premium seating experience** that Mazda s CX-9 is renowned for. Perfect for enthusiasts seeking a seamless fit for their vehicle s interior or those looking to refresh their SUV s rear seating for added comfort and style, this component exemplifies Mazda s commitment to **precision engineering and driver-centric design**.

### **Pros and Cons of Buying a Used Mazda RC17TT40X (2017 2023) CX-9 Rear Second-Row Left Driver Seat Lower Cushion Bottom**

#### **Overview**

The Mazda RC17TT40X is a specialized racing seat designed for high-performance driving, originally developed for Mazda s racing programs. It is not a standard vehicle seat but rather a high-end, adjustable racing seat that can be installed in certain Mazda models, including the CX-9 (with modifications). The **2017 2023 CX-9** is a larger SUV, and fitting a racing seat like this in the rear second row requires significant modifications, including seat removal, structural reinforcement, and possibly harness installation. Below is an analysis of the pros and cons of purchasing this specific part.

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### **Pros**

1. **Performance and Comfort for Enthusiasts**

- The RC17TT40X is engineered for racing, offering superior support, adjustability, and ergonomics compared to standard car seats. It provides better lateral and spinal support, reducing fatigue during long drives or track sessions.

- The seat is designed with high-quality materials, including reinforced foam and durable upholstery, which can enhance durability and comfort for drivers who prioritize performance.

2. **Customization and Personalization**

- Racing seats like this allow for high levels of customization, including adjustable lumbar support, seat angle, and harness tension. This can be ideal for drivers who want a tailored fit for their body and driving style.

- The seat s design may appeal to Mazda enthusiasts who want to modify their vehicle for a more driver-focused experience, even if it s not a race car.

3. **Potential Resale or Track Use Value**

- If you plan to use the seat in a modified Mazda for track days or autocross events, this seat could be a valuable addition. Racing seats are often sought after by performance enthusiasts.

- Some buyers may see this as a unique upgrade, potentially increasing the perceived value of a modified vehicle.

4. **Durability and Build Quality**

- Mazda s racing seats are known for their robust construction, designed to withstand high G-forces and repeated use. The materials used in the RC17TT40X are likely to be more durable than standard car seats.

5. **Aesthetic Appeal**

- The racing seat s sleek, sporty design can give a modified CX-9 a more aggressive and performance-oriented look, appealing to enthusiasts who enjoy customizing their vehicles.

---

### **Cons**

1. **Lack of Standard Compatibility**

- The RC17TT40X is **not a factory seat** for the CX-9. Installing it in the rear second row requires significant modifications, including:

- Removing the factory seat and possibly the rear bench seat.

- Reinforcing the floor and seatbelt anchors to support the weight and forces of a racing seat.

- Installing a harness system (if not already present), which is legally required in many racing environments and may not be compatible with standard vehicle safety systems.

- Without these modifications, the seat may not fit properly or could pose safety risks.

2. **Safety Concerns**

- Racing seats are designed for high-speed, controlled environments (like race tracks) and are not approved for street use under standard vehicle safety regulations. Using it in a non-modified vehicle could:

- Void insurance coverage in the event of an accident.

- Fail safety inspections in some regions.

- Increase the risk of injury in a collision due to improper restraint systems.

- Many jurisdictions require standard seatbelts for street-legal vehicles, and a racing seat may not comply with these laws.

3. **Cost of Installation and Modifications**

- Installing this seat in a CX-9 is not a simple swap. It may require:

- Professional fabrication of seat mounts or reinforcement of the vehicle s structure.

- Custom harness installation, which can be expensive (often $1,000 $3,000 ).

- Potential damage to the factory seat or surrounding components during removal.

- The total cost of modifications could easily exceed the price of the seat itself, making it a significant investment.

4. **Practicality for Daily Use**

- The CX-9 is a family-friendly SUV, and replacing the rear second-row seat with a racing seat would:

- Eliminate seating capacity for passengers, making it impractical for daily use with multiple occupants.

- Limit the vehicle s utility for errands, family trips, or towing (if applicable).

- The seat s design is optimized for driving performance, not comfort for passengers or long-distance travel.

5. **Legal and Insurance Issues**

- Many insurance providers may not cover vehicles with non-standard seating arrangements, especially if they are not street-legal or do not meet safety regulations.

- Some regions have strict laws about vehicle modifications, and using a racing seat in a street-legal vehicle could lead to fines or legal complications.

6. **Resale Value Impact**

- A modified CX-9 with a racing seat in the rear would likely have **lower resale value** compared to an unmodified or stock version. Buyers typically prefer vehicles that are legal for daily use without modifications.

- Potential buyers may be deterred by the lack of standard seating or the need for further modifications to make the seat functional.

7. **Maintenance and Wear**

- Racing seats are designed for high-performance use and may wear out faster than standard car seats, especially if used frequently on rough surfaces or in extreme conditions.

- The seat may require professional cleaning or maintenance to preserve its condition, adding to long-term costs.

---

### **Conclusion**

Buying a **Mazda RC17TT40X (2017 2023 CX-9 rear second-row left driver seat lower cushion bottom)** is a niche purchase with significant trade-offs. It is **not a practical or safe choice for daily use** in a standard CX-9 unless extensive and costly modifications are made. The seat s primary value lies in **performance driving, track use, or autocross**, where its support and adjustability excel.

For **enthusiasts who plan to modify their CX-9 for track days or racing**, this seat could be a worthwhile investment if:

- You are prepared to spend additional money on installation, harness systems, and structural reinforcements.

- You accept the limitations of reduced passenger capacity and potential legal/compliance issues.

- You prioritize driving performance over daily practicality.

For **everyday drivers, families, or those who value safety and resale value**, this seat is **not a practical purchase**. The modifications required to install it would likely outweigh its benefits, and the risks (legal, safety, and practical) far exceed the advantages.

---

### **Recommendation**

- **If you are a Mazda performance enthusiast with a modified vehicle for track use:**

Proceed with caution. Ensure you have a **professional mechanic or fabricator** handle the installation, including harness systems and structural reinforcements. Budget for **at least $3,000 $5,000 ** in modifications beyond the seat cost. Verify local laws and insurance coverage before proceeding.

- **If you are considering this for daily driving or as a standard upgrade:**

Do not purchase it. Standard car seats are safer, more practical, and legally compliant. The RC17TT40X is a **racing seat**, not a street-legal replacement, and its benefits do not justify the risks or costs for normal use.

- **Alternative Options:**

- For track use, consider **aftermarket racing seats** designed for street-legal modifications (e.g., Recaro, Sparco, or OMP seats with proper harnesses).

- For daily driving, focus on **performance upgrades** (tires, suspension, exhaust) that enhance handling without compromising safety or legality.

- If you love the aesthetic, consider **removing the factory seat** and installing a **custom bench seat** or **adjustable performance bucket seats** that are street-legal and more practical.

Details:

Paint Code: 46G. Miles: 36,933. Key Features: Authentic OEM part for precise fit and compatibility. Excellent used condition.

Tested and verified to be in excellent working condition. Condition: Used, with minor signs of normal use. Compatibility: This part is compatible with the vehicle in listing title. Donor Vehicle Information: Make/ model: 2022 Mazda Cx-9 Touring.

Fully functional with no damage or broken parts.

part #: rc17tt40x price

  • $162.92

specifications seainterio:

  • for models: Cx-9
  • for makes: Mazda
  • for years: 2017-2023
  • mpn: Rc17tt40x
  • part type: Driver Seat Cushion
  • color: Gray
  • headrest type: Detachable
  • material: Leather
  • vintage part: No
  • placement on vehicle: Driver Side, Left, Rear, Second Row
  • seat type: Seat Cushion
  • features: Easy Clean

offer seainterio:

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

general seainterio:

  • Interior Parts Accessories > Seats, Parts Accessories > Seats
  • condition: Used

payments seainterio:

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

seller seainterio:

  • city: Seattle, Washington
  • rating: 99.0%
  • # reviews: 1135

shipping seainterio:

  • class: Standard, Economy
  • type: Calculated
  • cost: $43.81
  • service: UPS Ground, FedEx Ground Economy
  • carrier: UPS, FedEx
  • transit: 4-8 Days

returns seainterio:

  • time: 30 Days
  • paid by: Buyer
  • policy: Returns Accepted
for models: cx-9, for makes: mazda, for years: 2017-2023, part type: driver seat cushion, headrest type: detachable, vintage part: no, placement on vehicle: driver side, left, rear, second row, seat type: seat cushion, features: easy clean,
category: auto parts > interior parts accessories > seats, parts accessories > seats, color: gray, material: leather, sku: 20820450232003741,
Mazda RC17TT40X Is Similar To:
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1 offer $162.92 USD
  • Used. Offer #1 priced at $162.92 + $43.81 shipping estimate = $206.73* total. Excellent used condition. Make/Model: 2022 Mazda Cx-9 Touring.+$43.81 shipping

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