PORSCHE 94411008004 Fuel Rail Pressure Regulator Damper Injectors
fits make: Porsche. year: 1983.
( Manufacturer Part Number: 94411008004 ), ( Type: Fuel Injector ), ( Country Of Origin: Germany )
Review PORSCHE Fuel Rail Pressure Regulator Damper And Injectors fits 944 1983
The **Porsche 944 Fuel Rail Pressure Regulator, Damper, and Injectors Assembly (Part Number: 11008004)** is a critical and meticulously engineered component set designed exclusively for the iconic **1983 Porsche 944**, ensuring optimal performance, reliability, and adherence to the vehicle s precise fuel delivery requirements. This assembly combines three essential elements **the fuel rail pressure regulator, the damper (or accumulator), and the high-quality injectors** into a cohesive unit that maintains consistent fuel pressure, minimizes pulsations in the fuel line, and delivers precise fuel metering to the engine s cylinders. The **pressure regulator** plays a pivotal role in maintaining the correct fuel pressure within the rail, compensating for fluctuations in engine load and speed to prevent either underfueling or overfueling, which could lead to poor throttle response, rough idling, or even engine damage. Paired with the **damper**, which acts as a small accumulator to smooth out pressure surges and vibrations in the fuel line, this assembly ensures a stable and uninterrupted fuel supply, reducing wear on the injectors and improving overall engine efficiency.
The **injectors** themselves are precision-engineered components designed to deliver an exact, atomized spray of fuel directly into the combustion chamber, enabling optimal air-fuel mixture for smooth operation and enhanced power output. These injectors are built to Porsche s exacting standards, ensuring compatibility with the 944 s fuel injection system and maintaining the vehicle s original performance characteristics. Whether replacing a worn-out or failing component or upgrading for improved reliability and drivability, this assembly provides a seamless, high-performance solution that aligns with the 944 s reputation for precision engineering. Ideal for both restoration projects and routine maintenance, this part is a must-have for any owner seeking to preserve or enhance the legendary driving experience of their 1983 Porsche 944. Proper installation and calibration are recommended to ensure peak performance and longevity of the assembly.
Buying a **Porsche 944 fuel rail pressure regulator, damper, and injectors** (specifically for the 1983 model with part numbers 11008004 and 944) can be a practical solution for restoring performance or resolving fuel delivery issues. Below are the key pros and cons, followed by a conclusion and recommendation.
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### **Pros of Purchasing OEM or High-Quality Replacement Parts**
1. **Restored Performance and Reliability**
The fuel rail pressure regulator, injectors, and damper are critical components for proper fuel delivery and engine management. Worn or failing parts can cause misfires, poor acceleration, or even stalling. Replacing them with OEM or high-quality aftermarket parts can restore the engine s intended performance, especially in a 944, which relies heavily on precise fuel metering.
2. **Prevents Further Engine Damage**
A failing fuel pressure regulator can lead to inconsistent fuel delivery, which may damage the catalytic converter, oxygen sensors, or even the engine internals over time. Addressing these parts early can prevent costly repairs down the line.
3. **Compatibility and Fitment**
Porsche 944 parts, especially those from the early 1980s, are relatively straightforward to source. The 11008004 regulator and injectors (likely Bosch L-jetronic or similar) are designed specifically for the 944 s fuel injection system, ensuring a proper fit without modification.
4. **Potential for Improved Driving Experience**
If the original parts were degraded, replacing them with fresh OEM or aftermarket equivalents (such as **Eibach, Walbro, or Bosch remanufactured injectors**) can improve throttle response, smoothness, and overall drivability.
5. **Long-Term Cost Savings**
While aftermarket parts may be cheaper upfront, investing in OEM or reputable aftermarket components (e.g., **Porsche AG-approved remanufactured parts**) can extend the lifespan of the fuel system, reducing the need for frequent replacements.
6. **Easier Maintenance and Diagnostics**
New or restored parts make it easier to diagnose fuel-related issues. If the engine was running poorly due to a failing damper or regulator, replacing these components simplifies troubleshooting compared to dealing with intermittent failures.
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### **Cons of Purchasing These Parts**
1. **Cost**
OEM Porsche parts, especially for older models like the 944, can be expensive. A fuel rail pressure regulator, injectors, and damper from Porsche AG or an authorized dealer may cost **$300 $800 ** depending on availability and condition. Aftermarket alternatives (e.g., **Walbro, Eibach, or remanufactured Bosch injectors**) can be cheaper but may vary in quality.
2. **Availability and Lead Times**
Finding genuine Porsche parts for a 1983 944 can be challenging, especially if the seller is not a specialized Porsche parts dealer. Some components may require ordering from Europe or waiting weeks for delivery. Aftermarket parts are more readily available but may not match OEM specifications exactly.
3. **Installation Complexity**
Replacing these parts requires some mechanical skill and access to diagnostic tools. The fuel rail pressure regulator and injectors are part of the engine s fuel injection system, which may need to be disconnected from the ECU or fuel lines. Improper installation (e.g., incorrect torque on fittings, improper grounding) can lead to leaks or electrical issues.
4. **Potential for Counterfeit or Low-Quality Parts**
Buying from untrusted sellers (especially online marketplaces) risks receiving **counterfeit, reused, or poorly manufactured parts**. This can lead to premature failure, fuel leaks, or even engine damage if the components don t meet specifications.
5. **Compatibility with Modified Engines**
If the 944 has been modified (e.g., turbocharged, forced induction, or aftermarket ECU tuning), stock injectors and regulators may not handle increased fuel demands. Upgrading to **high-flow injectors or a performance fuel pump** may be necessary, adding to the cost.
6. **Testing and Calibration Needs**
After replacement, the engine may require **recalibration** (if equipped with a tunable ECU) or **fuel system bleeding** to ensure proper pressure and delivery. Some injectors may need **cleaning or testing** to confirm they are functioning correctly before installation.
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### **Conclusion**
Buying a **Porsche 944 fuel rail pressure regulator, damper, and injectors** (especially for a 1983 model) is a **wise investment** if the goal is to restore performance, prevent engine damage, or improve drivability. The benefits such as **reliable fuel delivery, better throttle response, and long-term engine protection** outweigh the drawbacks in most cases, provided the parts are **authentic and properly installed**.
However, the **cost, availability, and installation challenges** make this a project best suited for someone with **mechanical experience or access to a Porsche specialist**. If budget is a concern, **high-quality aftermarket alternatives** (e.g., **Bosch remanufactured injectors, Walbro regulators, or Eibach dampers**) offer a cost-effective solution without sacrificing performance.
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### **Recommendation**
1. **Source Parts from Reputable Sellers**
- **OEM/Porsche AG parts** (if available) are ideal for authenticity but may be expensive.
- **Bosch or Walbro remanufactured injectors** (e.g., **Bosch 0 280 158 004**) are a reliable aftermarket option.
- Avoid unknown sellers stick to **Porsche specialty dealers, eBay verified sellers, or trusted online marketplaces** (e.g., **Porsche Parts Direct, Jegs, or Summit Racing**).
2. **Verify Compatibility**
- Confirm that the **injectors match the 944 s fuel system** (likely **L-jetronic or Motronic**).
- Check if the **fuel pressure regulator** is compatible with the engine s fuel rail (some later 944s used different setups).
- If the car is modified, consider **upgraded injectors** (e.g., **Eibach 400cc or 500cc**) for better performance.
3. **Professional Installation (If Possible)**
- If unfamiliar with fuel injection systems, have a **Porsche mechanic or fuel injection specialist** perform the installation to avoid leaks or electrical issues.
- Ensure the **fuel system is bled properly** after replacement to prevent airlocks.
4. **Budget Considerations**
- If cost is a concern, prioritize **injectors first** (as they are the most critical for performance).
- The **damper** (if faulty) may not be as critical unless the engine has **vibration or fuel sloshing issues**.
- Consider **used OEM parts** from a trusted source if new parts are too expensive.
5. **Post-Installation Checks**
- After replacement, **scan for error codes** (if equipped with an OBD connector) to ensure no fuel system issues.
- **Test drive the car** and monitor for **smooth idle, proper acceleration, and no misfires**.
- If using aftermarket parts, **tune the ECU** if necessary to optimize fuel delivery.
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### **Final Verdict**
**Worth it if:**- The car has **fuel-related symptoms** (rough idle, stalling, poor acceleration).
- You want to **restore stock performance** or prepare the car for modifications.
- You have access to **reputable parts and installation support**.
**Not worth it if:**- The car is **already running poorly due to other issues** (e.g., ignition, sensors, or mechanical problems).
- You cannot afford **high-quality replacements** or professional installation.
- You re unsure about **diagnosing the exact cause** of fuel delivery issues (e.g., clogged fuel filter, bad fuel pump).
For most **944 owners dealing with fuel injection problems**, replacing these components is a **necessary and beneficial** upgrade just ensure **proper sourcing and installation** to maximize results.
Details:
A very good condition, fuel rail with dampener and pressure regulator. PRODUCT COMPATIBILITY: Porsche 944 n/a 1983 to 1985. These came off a parts car and had them as spares for my 1983 auto but never used. We calculate the charges and try to offer you fairest rate, by comparing different shipping methods or carriers, contiguous 48, and PR for small parts.
These were in my auto car, excellent working condition everything. This rate covers actual shipping charges and packing. All our pictures are from the exact item listed, but in a few occasions, there may be mix-up or an error. Injectors need servicing, fuel damper and regulator in good condition rail does not leak.
part #: 94411008004 prices
- $179.10-$275.00
specifications carfuelinjector:
- for makes: Porsche
- for years: 1983
- mpn: 94411008004
- type: Fuel Injector
- country of origin: Germany
returns carfuelinjector:
- policy: Returns Accepted
- paid by: Buyer
- time: 30 Days
seller carfuelinjector:
- city: Port Saint Lucie, Florida
- rating: 100.0%
- # reviews: 3412
shipping carfuelinjector:
- cost: $0.00
- service: FedEx Ground / FedEx Home Delivery, UPS Ground, USPS Ground Advantage
- type: Calculated
- transit: 3-10 Days
- class: Standard
- carrier: FedEx, UPS, USPS
offer carfuelinjector:
- started: February 10, 2026
- sold: 0
- quantity: 1
- availability: In Stock
- options: Ship-to-home
payments carfuelinjector:
- wallet: Apple-pay
- other
- credit card: Visa
general carfuelinjector:
- condition: Used
- Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors
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