AUDI 8W1423055AK Power Steering Rack Pinion 8W1423055AD 8W6

( Manufacturer Part Number: 8W1423055AK ), ( Model: S5-AUDI ), ( Part Type: Steering Pinion Rack ), ( Conditions Options: Steering Rack Pinion ), ( Genuine Oem: Yes ), ( Ipn: 8w1423055ad ), ( Descriptionpartcondition: With Dynamic Steering. Low Milage Donor Vehicle. Reach Out If Uns )

Review AUDI 8w6 Power Steering Rack And Pinion Assembly fits S5 1925–2018

The **Audi 8W1423055AK 18-25 S5 8W6 Power Steering Rack Pinion** is a high-performance, precision-engineered component designed exclusively for Audi s high-end S-line vehicles, including the S5 (8W6 chassis) produced between model years 2018 and 2025. This power steering rack pinion assembly represents the pinnacle of automotive engineering, combining cutting-edge materials, advanced manufacturing techniques, and Audi s signature blend of sportiness and luxury. Crafted from durable, corrosion-resistant alloys and reinforced with high-grade polymers, this rack pinion is built to withstand the rigorous demands of high-performance driving, from spirited acceleration on winding roads to sustained high-speed stability on the Autobahn. The design incorporates a **twin-rack system** with optimized gearing for enhanced responsiveness, reduced play, and improved feedback, ensuring drivers experience a direct, engaging steering feel without compromising on precision or comfort. The pinion itself is precision-machined to exacting tolerances, featuring a **helical gear drive** that minimizes noise, vibration, and harshness (NVH) while maximizing efficiency, even under heavy loads or at high speeds. This component is engineered to integrate seamlessly with Audi s **Electronic Power Steering (EPS) system**, providing seamless integration with the vehicle s adaptive steering dynamics, which adjusts assistance levels based on driving conditions, speed, and driver input. Whether navigating tight corners at a track day or cruising effortlessly on a multi-lane highway, this rack pinion delivers a balance of agility and control that Audi enthusiasts demand. Built to meet or exceed OEM specifications, it is a direct-fit replacement for the original equipment, ensuring compatibility with the S5 s advanced suspension and steering systems, including the optional **Quattro all-wheel-drive** configuration. For owners seeking to restore their vehicle to factory specifications after an accident or for those upgrading to a higher-quality replacement, this rack pinion is an ideal choice, offering both reliability and performance. Its robust construction and meticulous assembly ensure longevity, reducing the risk of premature wear or failure, while its seamless integration with Audi s electronic systems guarantees that all steering-related functions from lane-keeping assist to adaptive damping operate with the same level of sophistication as the original.

Buying the Audi power steering rack part **8W1423055AK (18-25 S5 8W6)** involves weighing several factors related to compatibility, quality, cost, and installation. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

---

### **Pros of Buying This Part**

1. **OEM Quality and Fitment**

The part is an original Audi equipment (OEM) design, meaning it is engineered specifically for the **S5 (8W6) model range (2018 2025)**. This ensures a precise fit with the vehicle s steering system, reducing the risk of misalignment or compatibility issues. OEM parts are built to the same standards as factory components, which can improve reliability and longevity compared to aftermarket alternatives.

2. **Direct Replacement for Common Failures**

The **8W6 S5** power steering rack (pinion) is known for wear issues, particularly in the **rack seals, bushings, or recirculating ball joints**, leading to leaks, stiffness, or excessive play. This part replaces the entire assembly, eliminating the need for multiple repairs or patchwork fixes. It is a common failure point, so many owners will eventually need this replacement.

3. **Warranty Coverage**

If purchased from a reputable dealer or Audi-approved supplier, the part may come with a warranty (e.g., 12 24 months or a mileage-based guarantee). This provides peace of mind against premature failure, though warranties vary by seller.

4. **Compatibility with Upgrades**

The S5 s power steering system is tied to the **electric power steering (EPS) motor and control unit**. While this rack is a mechanical component, replacing it with an OEM part ensures it integrates correctly with the EPS system, avoiding potential software or calibration issues that could arise from non-OEM parts.

5. **Resale Value and Ownership Confidence**

For owners planning to keep or resell their S5, installing an OEM rack can enhance the vehicle s perceived value. It also reduces the likelihood of future issues stemming from inferior aftermarket parts, which might deter potential buyers.

6. **Accessibility of Installation Resources**

Audi forums, repair manuals, and dealerships provide ample guidance on installing this rack. Many owners and mechanics have documented the process, making it easier to tackle the job with confidence, even if it requires specialized tools (e.g., rack compressors, torque wrenches).

---

### **Cons of Buying This Part**

1. **High Cost**

OEM Audi parts are significantly more expensive than aftermarket alternatives. The **8W1423055AK** typically ranges from **$1,200 to $2,000 **, depending on the seller (dealer vs. online retailer). This cost can be prohibitive for some owners, especially when factoring in labor (if not DIY) and potential additional repairs (e.g., replacing seals, bushings, or the EPS motor if it s failing).

2. **Long Lead Times**

OEM parts, particularly for Audi, often have **extended lead times** due to supply chain issues or regional availability. Some sellers may require pre-ordering, and delivery can take **weeks or even months**, delaying repairs.

3. **Potential for Counterfeit or Mismatched Parts**

Buying from untrusted sellers (e.g., eBay, Craigslist, or unvetted online marketplaces) risks receiving **counterfeit or mismatched parts**. These may not fit correctly, fail prematurely, or void warranties. Always verify the part s authenticity (e.g., check the **Audi part number stamping**, packaging, and seller reputation).

4. **Complex Installation**

Replacing the power steering rack in an S5 requires **disassembling the steering column, removing the rack from the subframe, and often replacing associated components like seals or bushings**. This is a **multi-hour job** that demands mechanical skill, patience, and access to tools. Mistakes during installation (e.g., improper torque, misalignment) can lead to further issues like binding or leaks.

5. **Additional Costs Beyond the Part**

- **Seals and bushings** (often sold separately, e.g., **8W1423055AK includes seals, but some sellers charge extra**).

- **EPS motor diagnostics** (if the system isn t functioning post-installation, the motor or control unit may need replacement or reprogramming).

- **Labor** (if not DIY, shop rates for this repair can exceed **$1,500 $3,000**).

- **Torque rod or subframe adjustments** (if the rack s mounting points are worn).

6. **Risk of Recalls or Software Updates**

While rare, Audi occasionally recalls or updates steering system software. If the S5 is near a recall period, the new rack may need to be **reprogrammed or paired with the vehicle s EPS system**, adding complexity.

7. **Environmental and Disposal Concerns**

Power steering racks contain **hydraulic fluid and seals**, which may require proper disposal. Some recycling centers or auto shops handle these parts, but owners must ensure compliance with local regulations to avoid environmental hazards.

---

### **Conclusion**

The **Audi 8W1423055AK power steering rack** is a **high-quality, direct replacement** for the S5 s steering system, offering reliability and compatibility with the vehicle s original specifications. It is ideal for owners who prioritize **long-term durability, warranty coverage, and maintaining the vehicle s value**. However, the **high cost, long lead times, and complex installation** make it a significant investment, both financially and in time.

For those who cannot afford or do not wish to undertake the expense, **aftermarket alternatives** (e.g., **MagnaFlow, Febi Bilstein, or OE-quality brands like ACDelco**) may offer a more budget-friendly option, though with potential trade-offs in warranty and longevity. Always **verify the aftermarket part s compatibility** with the S5 s EPS system.

---

### **Recommendation**

- **Purchase from an authorized Audi dealer or a trusted online supplier** (e.g., **AudiParts2Go, RockAuto, or local Audi specialists**) to ensure authenticity and warranty.

- **Budget for additional components** (seals, bushings) and **labor if not DIY**.

- **Follow Audi s repair procedures** closely to avoid installation errors.

- **Compare aftermarket options** (e.g., **MagnaFlow 8W1423055AK equivalent**) for cost savings, but **test the part s compatibility** with the EPS system post-installation.

- **Consider a used OEM rack** (from a reputable source) to reduce costs, though this carries higher risk.

- **DIY the installation** if comfortable with advanced automotive work to save on labor.

- **Consult an Audi specialist** before purchasing to confirm the part s necessity and explore alternatives.

- **Check for recalls or software updates** related to the S5 s steering system to avoid future issues.

Ultimately, the **8W1423055AK is the best choice for long-term reliability**, but it requires careful planning due to its cost and complexity. For most S5 owners experiencing steering rack failure, this OEM part is the **most prudent investment** to prevent recurring problems.

Details:

All listed parts have already been removed from donor vehicles and are on the shelf ready to be shipped. Reach out if unsure of fitment. Stock Number: 1807. Fitment Compatibility.

Suggested Fitment. Mileage: 75000. Item Condition. High quality pictures are provided for each item so you can see its exact condition.

As part of our commitment to a more sustainable future when make sense, we attempt re-use packaging materials when possible for shipping purposes. Model: S5 AUDI. Low milage donor vehicle. AUDI A5 18-21 power rack and pinion, electric power steering, w/dynamic steering opt 1N8, RS5 18-19 S4 18 S5 18-24 1N8.

Items are sold in good, working condition and have been inspected prior to listing.

part #: 8w1423055ak prices

• $935.00-$1013.64

specifications steragebo:

• for makes: Audi
• for years: 1925-2018
• mpn: 8w1423055ak
• model: S5-audi
• part type: Steering Pinion Rack
• conditions options: Steering Rack Pinion
• genuine oem: Yes
• ipn: 8w1423055ad
• descriptionpartcondition: With Dynamic Steering. Low Milage Donor Vehicle. Reach Out If Uns

general steragebo:

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

shipping steragebo:

• class: Standard
• transit: 4-8 Days
• type: Fixed
• service: Standard
• cost: $97.00

payments steragebo:

• credit card: Diners-club
• other
• wallet: Apple-pay

offer steragebo:

• availability: In Stock
• options: Ship-to-home
• started: May 29, 2026
• best offers: True
• quantity: 1
• sold: 0

returns steragebo:

• policy: Returns Accepted
• time: 60 Days
• paid by: Buyer

seller steragebo:

• city: San Marcos, California
• rating: 100.0%
• # reviews: 811

Audi 8W1423055AK Is Similar To:

• 0jvedm Maxpeedingrods Power Steering Rack And Pinion For Audi Servotronic (50.7% similar) 7TDI door lock latch actuator rear left for audi a3 a6 s6 c6 a8 s8 fit seat EEO front wheel bearing hub Opel sign um hatchback VKBA6507 31MM. Our mechanic will inspect every return item. Return items must be in original condition. For example, you paid at 11AM on Nov...(December 2nd, 2018)
• 141976470 Audi Steering Assist Not Rack And Pinion (48.7% similar) Steering assist for audi a5 to original part...(January 19th, 2019)
• 19730050745 Audi Quattro Power Steering Gear Rack And Pinion Oem (60.2% similar) Please inquire when providing commercial address. If item is shipped through greyhound, once shipped, it cannot be rerouted. If commercial address is considered as restricted access, theres an extra charge around 80 varies by carrier. No exception. Kindly ask questions before offer ends. 48 states ...(August 30th, 2018)
• 1k0423812e 1k0 423 812 E 812e Audi Right Steering Tie Rod Boot (29% similar) 5LYEAR 2008 MAKEVOLKSWAGEN model R32TRIMHATCHBACKENGINE3. TURBOYEAR2007- 2008 MAKEVOLKSWAGEN model EOSTRIMCONVERTIBLEENGINE2. 2005 VOLKSWAGENJETTASEDAN, WAGON1. . TURBO2010-. 8l turbo, 2013 VOLKSWAGENGOLF SPORTWAGENWAGON2. TURBOYEAR2012MAKEAUDI model A3, a3 , HATCHBACKENGINE1. 4l turbo, . 2L 2008...(May 31st, 2018)
• 1k0423933 Audi Oem Steering Bellows Clamp (32.7% similar) 0t sport utility 4-DOOR, 30 anniversary hatchback 2-DOOR, ambient sedan attraction convertible plus avaunt wagon base coupe Cabrini cabriolet competition dynamic edition elite hybrid prestige comfort l premium TD W12 land of quarto le luxury performance progressive Ross line select high sport back ...(October 14th, 2018)
• 440 54044 054 Wd Express Rack And Pinion Bellows Fits Audi (40.9% similar) All parts come with a 1-YEAR warranty and 30-DAY return period. That section provides detailed information about the part and compatible vehicles...(May 24th, 2018)
• 4b1422066c Audi Oem Power Steering Rack No Leaks Tested (46.8% similar) 7t oem power steering rack 4B1422066C no leaks. Any questions please a before purchase. 7t and has the electronic sensor located on rack itself...(August 5th, 2018)
• 4b1422066m 4b1 422 066 M 066m Power Steering Rack Gear Audi Allroad (42.6% similar) Power steering rack gear - audi a6 all road s6 4B1422066M...(December 26th, 2018)
• 4b1422071 Audi Allroad A6 2.7l Steering (33.3% similar) Quality first. Having profound knowledge in cars you can be assured our competency and accuracy...(January 18th, 2017)
• 4d0419831e Rein Automotive Vw Audi Steering Rack Boot Left (34.6% similar) ...(September 4th, 2018)
• 4e1422065l Audi Power Steering Rack Oem Quattro (46.6% similar) Steering rack from audi A8L A8. Good working condition includes hoses verify fit...(October 14th, 2018)