PORSCHE 99134700565 Steering Rack 718
fits model: Boxster. make: Porsche. year: 2017–2021.
( Manufacturer Part Number: 99134700565 ), ( Type: Steering Rack ), ( Universal Fitment: No ), ( Country Of Origin: Germany )
Review PORSCHE 718 Steering Rack fits BOXSTER 2017–2021
The **Porsche 991.3 (911 991.3) Steering Rack (Part Number: 34700565)** is a precision-engineered component designed exclusively for the second-generation 911 (991.2) and its sportier sibling, the **911 Carrera S, Turbo S, and GT3**, as well as the **Boxster (718) and Cayman (718) models produced between 2017 and 2021**. This steering rack is a critical element of the vehicle s steering system, ensuring razor-sharp responsiveness, minimal play, and the iconic Porsche feel that drivers expect from every corner of the road. Crafted from high-grade materials and built to Porsche s exacting standards, this rack integrates a **recirculating ball-and-nut mechanism** with a **twin-rack design**, delivering both efficiency and durability. The internal components are treated with specialized coatings to resist wear, corrosion, and contamination, while the rack s robust construction minimizes flex under heavy loads, maintaining consistent feedback and precision even at high speeds or during aggressive driving maneuvers. The **hydraulic power assist** (where applicable) is seamlessly integrated, allowing for effortless steering in urban environments while still providing the driver with direct, tactile control when needed. This steering rack is engineered to work in tandem with the vehicle s **electronic power steering (EPS) system**, ensuring optimal synchronization between driver input and vehicle response, whether cruising on a highway or navigating tight, winding roads. Replacing a worn or damaged steering rack with this genuine Porsche part restores the car s original handling dynamics, eliminating any unwanted play or stiffness that can compromise both safety and driving enjoyment. Whether used in a restoration project, a performance upgrade, or as a direct replacement for a failed component, this steering rack embodies Porsche s commitment to engineering excellence, ensuring that every turn feels as precise and engaging as the first day the vehicle left the factory.
### **Pros and Cons of Buying a 2017 2021 Porsche 991.3 (718 Boxster) Steering Rack (Part Number 34700565)**
#### **Pros**
1. **Performance and Handling**
The 718 Boxster is a high-performance sports car with a naturally aspirated 3.8L flat-six engine producing around 350 370 hp (depending on the model year and variant). The steering rack is a critical component that ensures precise, responsive steering, which is essential for the car s sporty driving dynamics. A well-maintained rack will contribute to the Boxster s agile handling and quick steering feel.
2. **Reliability of the Steering Rack (When New or Rebuilt)**
Porsche s steering racks in the 991.3 generation are generally robust, especially if they are original or have been professionally rebuilt. The rack itself is a hydraulic power-assisted unit, which means it provides smooth, effortless steering without the need for frequent adjustments. Unlike some older Porsche models, the 991.3 rack is designed to last a long time with proper maintenance.
3. **Compatibility and Availability of Parts**
The 718 Boxster s steering rack is a standard component, and Porsche (as well as aftermarket suppliers) offers a wide range of parts, rebuild kits, and service options. This makes it easier to maintain or replace if issues arise. Additionally, the rack is a common failure point in some Porsche models, so there is a large community of mechanics and enthusiasts who understand its intricacies.
4. **Potential for Customization**
If you are looking to modify your Boxster, a functional steering rack is a prerequisite for any performance or aesthetic upgrades. A rebuilt rack can also be paired with aftermarket steering components (e.g., quicker steering ratios, adjustable dampers) to further enhance the driving experience.
5. **Resale Value**
The 718 Boxster holds its value relatively well compared to other Porsche models, especially the more affordable base models. If you maintain the steering rack and the car in general, it can retain a significant portion of its value over time.
---
#### **Cons**
1. **Common Failure Points and Costs**
While the steering rack itself is durable, it is not immune to wear. Common issues include:- **Leaking hydraulic fluid**, which can lead to a stiff or unresponsive steering feel.
- **Worn or seized internal components**, such as the recirculating ball mechanism or tie rod ends, which can cause play or a "loose" steering wheel.
- **Failure of the hydraulic pump or power steering control module**, which may require replacement or recalibration.
Replacing or rebuilding the rack can cost between **$1,500 $3,000**, depending on whether you use OEM parts or aftermarket alternatives. Labor costs can also be high, especially if the work is done by a Porsche specialist.
2. **Maintenance Requirements**
The steering rack relies on hydraulic fluid, which must be checked and replaced periodically (typically every **50,000 70,000 miles**). Neglecting this can lead to premature failure. Additionally, the rack may require **bleeding** if air enters the system, which can cause a spongy or unresponsive feel.
3. **Potential for Hidden Damage**
If purchasing a used rack (or a used Boxster with a rack that has seen service), there is a risk of **hidden internal damage**, such as:- **Internal corrosion** (if the rack was exposed to moisture).
- **Worn bushings or tie rod ends** (which can affect alignment and steering feel).
- **Electrical issues** with the power steering control module, which may require reprogramming or replacement.
Always inspect the rack thoroughly or have it professionally inspected before purchasing.
4. **Limited Lifespan Compared to Electric Power Steering**
While hydraulic power steering is smooth and reliable, it is generally less durable than modern electric power steering systems (found in newer Porsche models). Over time, hydraulic components can wear out, requiring more frequent maintenance or replacement.
5. **Potential for Incompatibility with Modifications**
If you plan to heavily modify your Boxster (e.g., lowering, wide-body kits, or aggressive suspension changes), some aftermarket steering components may not fit perfectly or could stress the rack beyond its intended limits. Always ensure compatibility before making modifications.
---
### **Conclusion**
Buying a **2017 2021 Porsche 991.3 718 Boxster steering rack (part number 34700565)** can be a worthwhile investment if you prioritize performance, precision steering, and long-term reliability. The rack is a critical component that enhances the driving experience, and when maintained properly, it can last for **100,000 miles**. However, it is not without risks common failure points, high repair costs, and the need for regular hydraulic maintenance must be considered.
If you are purchasing a **used rack**, ensure it has been professionally rebuilt or inspected for leaks, wear, and internal damage. If you are buying a **used Boxster**, verify the rack s history and consider having it rebuilt as part of a full service.
---
### **Recommendation**
1. **If You Are Buying a New or Rebuilt Rack:**- Opt for **OEM Porsche parts** or a **high-quality aftermarket rebuild kit** (e.g., from **Porsche Parts Direct, Euro Car Parts, or a trusted local Porsche specialist**).
- Ensure the rack is **bleeded properly** and the hydraulic fluid is fresh.
- Consider pairing it with a **steering angle sensor calibration** if the car s electronics need updating.
2. **If You Are Buying a Used Boxster with a Used Rack:**- **Get a pre-purchase inspection** from a Porsche mechanic to check for leaks, play, or internal wear.
- **Budget for potential rack replacement or rebuild** if the current one shows signs of distress.
- **Prioritize maintenance** regularly check hydraulic fluid levels and top up as needed.
3. **If You Plan to Modify Your Boxster:**- Ensure any aftermarket steering components (e.g., quick-ratio steering, adjustable dampers) are compatible with the rack.
- Consider upgrading to **electric power steering** (if available in later models) if you anticipate heavy modifications, as it may offer better long-term reliability.
4. **General Advice:**- If you are not mechanically inclined, **trust a Porsche specialist** for rack service or replacement.
- Keep records of maintenance to ensure the rack remains in optimal condition.
- If the rack is failing, **replace it as soon as possible** driving with a bad rack can lead to further damage to the steering system.
**Final Verdict:**The **2017 2021 Porsche 991.3 718 Boxster steering rack is a solid component** when in good condition, but it requires **proactive maintenance and budgeting for potential repairs**. If you are an enthusiast who values precise steering and performance, investing in a quality rack (or rebuilding an existing one) is well worth it. However, if you are on a tight budget or unsure about maintenance, weigh the costs carefully before committing.
Details:
Came off a running and driving 2017 Porsche 718 Boxster. The 2017 2021 Porsche 718 Boxster Steering Rack with manufacturer part number.
part #: 99134700565 prices
- $425.00-$1300.00
specifications steragebo:
- for models: Boxster
- for makes: Porsche
- for years: 2017-2021
- mpn: 99134700565
- type: Steering Rack
- universal fitment: No
- country of origin: Germany
payments steragebo:
- other
- credit card: Diners-club
- wallet: Google-pay
general steragebo:
- condition: Used
- Car Truck Parts Accessories > Steering Suspension > Gearboxes, Rack Pinions
returns steragebo:
- policy: No Returns
shipping steragebo:
- type: Calculated
- carrier: USPS
- cost: $0.00
- class: Standard
- transit: 7-11 Days
- service: USPS Ground Advantage
offer steragebo:
- options: Ship-to-home
- sold: 0
- quantity: 1
- best offers: True
- started: April 30, 2026
- availability: In Stock
seller steragebo:
- city: Los Fresnos, Texas
- # reviews: 238
- rating: 100.0%
Porsche 99134700565 Is Similar To:
- 111-498-051a 111-498-021 Porsche New Steering (36% similar) 5l 356A 356B 6l 1963 356B 356C 356SCVOLKSWAGEN50-65 bug TYPE1 karma Gaia standard. 5l you are buying a brand new set of FBI, german, 356 steering link pin and king sets. For 356 a,b,c sc, and some VW. Part: 111498051A NEWPORSCHE48 questions...(July 10th, 2017)
- 19730047563 Porsche Cayenne Power Steering Gear Rack And Pinion Oem (42.6% similar) No exception. Kindly ask questions before offer ends...(June 22nd, 2018)
- 64434701001 Porsche Zf Very Nice Used Original Genuine Steering Box (34.4% similar) Please see pictures. Weir spreeing porsche. This can be shipped anywhere worldwide. 01 as used on very late 356A 356B 356C 356SC model's. No surprises here...(February 3rd, 2019)
- 644347010ax Zf Porsche Type Steering Gear Box Gearbox Bolt Sc (36.2% similar) The Pittman arm and bracket are not included. The numbers stamped into housing are G1163 all others please with zip code for shipping quote. For sale is a used porsche 356 F manual steering gearbox...(April 20th, 2018)
- 7l5422055bk Porsche Cayenne Steering Gear Power Bk Oem (38.5% similar) Please compare this item with yours before buying also do your research to make sure will fit vehicle part number must match. Phone: recent additions. Unless stated otherwise all our body parts are used and may have some damage, scuffs scratches...(March 26th, 2019)
- 7l5442055h Porsche Cayenne Oem Power Steering Gear Rack And Pinion (44.6% similar) Will fit porsche: cayenne may be others. What you see in the pictures is will get. It is in good used condition. You are buying on a steering rack and pinion removed out of porsche Cayenne's AWD 4 door 2004 V8...(March 26th, 2018)
- 80-00438s Oe Quality Replacement Power Steering Rack And Pinion Fits Porsche (32.1% similar) Simply put your old part in the box that new was delivered in, attach ups shipping label, and drop it off at or give to any driver will come back us. Built for trouble-free ownership and 100 visually inspected quality tested, this power steering rack is backed by our satisfaction guarantee. ...(March 20th, 2018)
- 90134701002 Zf Porsche Steering Gear Rack And Pinion Manual (36.8% similar) All others please with zip code for shipping quote. For sale is a used rack and pinion that was removed from 1970 porsche 911T...(April 20th, 2018)
- 911 Steering Column Floor Shift Model Fits Porsche (26.7% similar) No expedited shipping is available. 1 this part will fit these makes and model's with options porsche floor shift model 997 warranty guarantee all used parts come 90 day. Original shipping charges and return are not covered. Shipping notes: our default rates are for the 48 us states only via ups ...(April 26th, 2018)
- 911 Porsche Convertible Power Steering Rack And Pinion Assy (45.6% similar) No damage, scratches, or cracks. Why buy new when used will do. No expedited shipping is available. Fully functional item. Might have minor cosmetic scratches and or scuffs. Item might need some degree of cleaning and or restoration. Working condition item is fully functional. Will have visible ...(August 7th, 2018)
- 911 Porsche Boxster Steering Column Floor Shift Ignition Switch (44.1% similar) Sold as is this supersedes all conditions. Might have minor cosmetic scratches and or scuffs. Why buy new when used will do. If an item arrives damaged, please via message within 24 hours for instructions. No damage, scratches, or cracks. Working condition item is fully functional. Item might have ...(December 13th, 2018)
