1. Seats Interior For Sale
  2. sku: 20978297046320008
  3. AUDI 8W6885403D

AUDI 8W6885403D Rear Lower Seat Cushion 215.AU1G18 RS5

fits model: A5, S5, B9. make: Audi. year: 2018–2019.

8w6885403d Audi 18-19 A5 S5 Rs5 B9 Coupe Rear Lower Seat Cushion Assy Black Oem

( Manufacturer Part Number: 8W6885403D ), ( Model: A5-AUDI ), ( Part Type: Seat Cushion ), ( Conditions Options: Black Rear Lower Seat Cushion Coupe ), ( Genuine Oem: Yes ), ( Ipn: 215.au1g18 ), ( Country Of Origin: Germany ), ( Vintage Part: No ), ( Material: Leather ), ( Manufacturer Warranty: 6 Month ), ( Placement On Vehicle: Rear, Second Row ), ( Features: Easy Clean ), ( Color: Black ), ( Seat Type: Split Bench Without Headrest )

Review AUDI Rs5 Coupe Rear Lower Seat Cushion Assy Black Oem fits A5 S5 B9 2018–2019

The **Audi 8W6885403D rear lower seat cushion** is a meticulously engineered, high-performance component designed exclusively for the luxury and high-performance segments of Audi s lineup, specifically tailored for the **A5, S5, and RS5 (B9 generation, model years 2018 2019)** as well as the **A8 (W66/W66L)**. Crafted from Audi s signature blend of premium materials, this seat cushion exemplifies the brand s commitment to ergonomic excellence, durability, and driver-centric comfort. The cushion features a **multi-zone construction**, incorporating a **high-density foam core** reinforced with **high-resilience polyurethane** to provide unmatched support and pressure redistribution, ensuring optimal posture and reducing fatigue during extended drives. For those who demand both performance and refinement, the cushion is upholstered in **high-quality, breathable synthetic leather or Alcantara fabric**, depending on the vehicle s trim level, offering a luxurious yet functional surface that resists wear, stains, and moisture while maintaining a sleek, modern aesthetic. The **adjustable lumbar support** and **contoured seating surface** are engineered to conform to the driver s body, enhancing stability and reducing motion transfer during spirited driving, making it an ideal choice for enthusiasts of the RS5 s sport-tuned suspension or the A5 s dynamic handling. Additionally, the cushion is designed with **modular compatibility**, allowing for easy installation and replacement, ensuring that Audi owners can maintain the vehicle s premium feel without compromising on performance. Whether navigating city streets or pushing the limits on the track, this rear lower seat cushion delivers a harmonious blend of **sporty precision and opulent comfort**, embodying Audi s philosophy of seamless integration between technology and craftsmanship.

### **Pros and Cons of buying a Audi 8W6885403D (2018 2019 A5 S5 RS5 B9 Rear Lower Seat Cushion)**

#### **Pros:**

1. **High-Quality Material and Comfort** Audi s sport seats are known for their premium leather, supportive structure, and ergonomic design, which enhances driving comfort and performance. The reinforced lower cushion provides better stability during aggressive driving or track use.

2. **Enhanced Performance and Stability** The reinforced seat base improves weight distribution, reducing body roll and improving handling, especially in high-performance models like the S5 and RS5. This is particularly beneficial for spirited driving or track days.

3. **Durability and Longevity** Audi s aftermarket parts, including seat cushions, are built to last, often outperforming generic or low-quality replacements. The reinforced construction resists sagging and wear over time.

4. **Compatibility with Audi s Tuning Scene** Many enthusiasts modify their Audi seats for better support, especially in high-performance builds. This part is a common upgrade for those looking to enhance their driving experience without full seat replacement.

5. **Ease of Installation** While some Audi seats require professional installation due to complex mounting systems, this specific lower cushion is designed for straightforward replacement, reducing labor costs if done carefully.

6. **Aesthetic Appeal** The seat maintains the factory look while improving functionality, making it a subtle yet effective upgrade for those who want performance without sacrificing style.

7. **Warranty and Reliability** Audi s OEM parts come with manufacturer-backed warranties, ensuring replacement if defective. Third-party sellers (like eBay, RockAuto, or Audi specialty shops) often provide warranties as well.

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#### **Cons:**

1. **High Cost** As an OEM Audi part, the price is significantly higher than generic aftermarket alternatives. For example, the 8W6885403D typically costs between **$300 $500**, depending on the seller and condition.

2. **Limited Availability** Finding the exact part number (especially for older models like the B9) can be challenging, and stock may be low due to discontinued production. Buying from unreliable sellers risks receiving counterfeit or mismatched parts.

3. **Potential for Counterfeit Parts** The Audi market is flooded with fake parts, particularly on platforms like eBay or AliExpress. Without proper verification (e.g., checking the part number, serial, or seller reputation), buyers risk receiving inferior, unsafe, or non-functional replacements.

4. **Installation Complexity** While the lower cushion itself is relatively simple to replace, some Audi seats require disassembly of the upper cushion or electrical components (e.g., seat heaters, massage motors). Improper installation can damage the seat mechanism or void warranties.

5. **Weight Considerations** The reinforced lower cushion adds slight extra weight, which may not be noticeable but could affect fuel efficiency marginally in high-performance vehicles.

6. **Maintenance Requirements** Premium leather seats require regular conditioning to prevent cracking. Neglecting maintenance can lead to premature wear, especially in high-performance driving scenarios.

7. **Resale Value Impact** If the part is replaced with an aftermarket alternative, it may slightly reduce the vehicle s resale value for purists who prefer OEM components. However, this is negligible for most buyers.

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### **Conclusion**

The **Audi 8W6885403D (2018 2019 B9 A5 S5 RS5 rear lower seat cushion)** is a **high-quality, performance-oriented upgrade** that enhances comfort, stability, and driving dynamics. It is ideal for owners who prioritize **OEM reliability, durability, and a subtle but meaningful improvement** in their seat s support and longevity. However, the **high cost, potential for counterfeit parts, and installation challenges** make it less appealing for budget-conscious buyers or those unwilling to invest time in proper installation.

For **enthusiasts who drive aggressively, track regularly, or value Audi s build quality**, this part is a **strong recommendation**. For **casual drivers or those on a tight budget**, a **high-quality aftermarket alternative** (e.g., from brands like **OMP, Recaro, or Bilstein**) may offer similar benefits at a lower cost.

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### **Recommendation:**

- **Buy from a trusted source** (e.g., **Audi specialty shops, RockAuto, or verified eBay sellers**) to avoid counterfeit parts.

- **Verify the part number and serial** before purchasing to ensure authenticity.

- **Consider professional installation** if unsure about disassembling the seat, especially if the vehicle has seat heaters or massage functions.

- **If cost is a concern**, explore **aftermarket reinforced seat bases** (e.g., **Bilstein or OMP**) that offer comparable support at a fraction of the price.

- **For track or high-performance use**, this upgrade is **highly recommended** due to its impact on stability and driver confidence.

Ultimately, the **8W6885403D is a worthwhile investment for Audi owners who demand the best in both performance and longevity**, but it requires careful consideration of budget and installation capabilities.

Details:

Standard Warranty.

part #: 8w6885403d prices

  • $154.49-$437.50

specifications seainterio:

  • for models: A5, S5, B9
  • for makes: Audi
  • for years: 2018-2019
  • mpn: 8w6885403d
  • model: A5-audi
  • part type: Seat Cushion
  • conditions options: Black Rear Lower Seat Cushion Coupe
  • genuine oem: Yes
  • ipn: 215.au1g18
  • country of origin: Germany
  • vintage part: No
  • material: Leather
  • manufacturer warranty: 6 Month
  • placement on vehicle: Rear, Second Row
  • features: Easy Clean
  • color: Black
  • seat type: Split Bench Without Headrest

returns seainterio:

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

general seainterio:

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

seller seainterio:

  • rating: 100.0%
  • # reviews: 4050
  • city: Rancho Cordova, California

shipping seainterio:

payments seainterio:

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

offer seainterio:

  • started: May 15, 2026
  • quantity: 1
  • sold: 0
  • best offers: True
  • availability: In Stock
  • options: Ship-to-home
for models: a5, s5, b9, for makes: audi, for years: 2018-2019, part type: seat cushion, conditions options: black rear lower seat cushion coupe, genuine oem: yes, country of origin: germany, vintage part: no, manufacturer warranty: 6 month, placement on vehicle: rear, second row, features: easy clean, seat type: split bench without headrest,
manufacturer: audi, category: auto parts > interior parts accessories > seats, parts accessories > seats, color: black, material: leather, sku: 20978297046320008,
Audi 8W6885403D Is Similar To:
seainterio logo
5 offers $154.49–$437.50 USD
  • Used. Offer #1 priced at $350.00 + $Calculated shipping estimate = $350.00* total. BLACK REAR LOWER SEAT CUSHION COUPE.+$Calculated shipping
  • Used. Offer #2 priced at $154.49 + $0.00 shipping estimate = $154.49* total. FREE SHIPPING
  • Used. Offer #3 priced at $437.50 + $0.00 shipping estimate = $437.50* total. Warranty Info. Year: 2018.FREE SHIPPING
  • Used. Offer #4 priced at $163.89 + $100.00 shipping estimate = $263.89* total. Also fits: More Parts from Donor Vehicle More Parts for AUDI A5.+$100.00 shipping
  • Used. Offer #5 priced at $173.24 + $50.00 shipping estimate = $223.24* total. Donor vehicle: 2019 AUDI A5 QUATTRO PREMIUM PLUS S-LINE COUPE 2.0L AUTOMATIC TRANSMISSION.+$50.00 shipping

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