BOSCH 57646BSKS Fuel Injector
fits model: Rabbit. make: Volkswagen. year: 1983–1984.
( Brand: Bosch ), ( Manufacturer Part Number: 57646BSKS ), ( Part Type: Fuel Injector ), ( Manufacturer Warranty: 12 Month Warranty ), ( Years: 1983 1984 ), ( Application: Volkswagen Rabbit Fuel Injector ), ( Cs-sku: 400 )
Review BOSCH Volkswagen Fuel Injector fits RABBIT 1983–1984
The **Bosch 57646BKS** is a high-performance, direct-replacement fuel injector designed specifically for the **1983 1984 Volkswagen Rabbit** (also known as the Golf in some markets), equipped with the **1.6L or 1.8L air-cooled or water-cooled engines** featuring the **Bosch L-Jetronic** fuel injection system. This precision-engineered component is built to meet or exceed the original equipment manufacturer s (OEM) specifications, ensuring reliable operation, optimal fuel delivery, and enhanced engine performance. Crafted from durable materials, including a robust stainless steel or high-grade aluminum body, the **57646BKS** is designed to withstand the demands of modern fuel systems while maintaining compatibility with the Rabbit s original wiring and mounting hardware. Its **electromagnetic solenoid** operates with exceptional responsiveness, providing consistent spray patterns and precise fuel atomization to promote efficient combustion, reduced emissions, and improved throttle response. Whether replacing a worn-out original injector or upgrading for performance tuning, this injector is engineered to deliver **clean, high-pressure fuel delivery** with minimal resistance, ensuring smooth operation across a wide range of engine speeds and loads. Built to last, the **Bosch 57646BKS** incorporates a **sealed O-ring and gasket system** to prevent leaks, while its **threaded connection** ensures a secure fit within the fuel rail. Ideal for both restoration projects and high-mileage vehicles, this injector is a trusted choice for enthusiasts seeking dependable performance without compromising on quality or compatibility.
The Bosch 57646BKS fuel injector is a common replacement part for the 1983 1984 Volkswagen Rabbit (MK1) with the 1.6L or 1.8L engine, particularly those equipped with the **L-Jetronic** fuel injection system. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.
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### **Pros of the Bosch 57646BKS Fuel Injector**
1. **Direct Compatibility**
The 57646BKS is a **direct replacement** for the original Bosch L-Jetronic injectors used in the 1983 1984 Rabbit. It matches the electrical and mechanical specifications, including pinout, resistance (typically **12 14 ohms**), and spray pattern. This eliminates the need for modifications or adapters.
2. **High Quality and Reliability**
Bosch is a well-regarded manufacturer in the automotive industry, known for durable components. This injector is built to last, especially if properly maintained. Many users report years of trouble-free operation with minimal wear.
3. **Easy Installation**
The part is straightforward to install, requiring only basic tools (screwdrivers, pliers, and possibly a fuel line cutter). The mounting bracket and wiring harness are compatible with the Rabbit s original setup, reducing installation time.
4. **Aftermarket Support and Availability**
The 57646BKS is widely available from aftermarket suppliers, online retailers (e.g., RockAuto, Amazon, eBay), and specialty auto parts stores. This makes it easier to source than OEM injectors, which may be harder to find in good condition.
5. **Cost-Effective Replacement**
While not the cheapest option, it is **significantly more affordable** than purchasing a complete rebuilt engine or a used Rabbit with known injector issues. Prices typically range from **$50 $120 per injector**, depending on the seller and condition.
6. **Improved Performance Over OEM in Some Cases**
Some users claim that Bosch injectors (especially newer models) have a **more consistent spray pattern** and better atomization compared to older OEM injectors, which can improve engine response and fuel efficiency.
7. **Warranty Coverage**
Many reputable sellers offer **limited warranties** (e.g., 30 90 days), providing some peace of mind against defects. Bosch itself may not warranty individual injectors, but third-party sellers often do.
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### **Cons of the Bosch 57646BKS Fuel Injector**
1. **Potential for Counterfeit Parts**
The aftermarket for Bosch injectors is **prone to counterfeit or reconditioned parts** that may not meet original specifications. Some cheap injectors may have **poor spray patterns, clogged nozzles, or incorrect resistance**, leading to drivability issues. Buying from **trusted sellers** (e.g., verified eBay stores, reputable online retailers) is critical.
2. **Mismatched Resistance in Some Cases**
While most 57646BKS injectors have the correct **12 14 ohms** resistance, **older or reconditioned units** may have resistance outside this range. Incorrect resistance can cause **fuel pump or ECU issues**, leading to misfires or poor performance. Always **test resistance with a multimeter** before installation.
3. **Requires Clean Fuel System**
If the **fuel filter, fuel lines, or fuel tank** are dirty, new injectors can clog quickly. The Rabbit s fuel system is notorious for **sediment buildup**, so replacing the **fuel filter** and **cleaning the tank** (or using a fuel additive like **Seafoam**) is essential before installing new injectors.
4. **Possible Leaks or O-Ring Failure**
Over time, the **O-rings and seals** on injectors can degrade, leading to **fuel leaks**. This is more common with **high-mileage injectors** or those that have been improperly stored. Inspect the O-rings before installation and replace them if necessary.
5. **ECU or Wiring Issues May Persist**
If the **original injectors failed due to electrical problems** (e.g., corroded connectors, faulty wiring, or a bad ECU), replacing them with new Bosch injectors may not solve the root cause. A **full electrical system check** (including connectors, ground straps, and ECU diagnostics) is recommended.
6. **Limited Longevity Without Maintenance**
While Bosch injectors are durable, they **require periodic maintenance** to prevent clogging. This includes:- Using **high-quality fuel** (avoiding ethanol-blended fuels if possible).
- Adding **fuel system cleaners** (e.g., **Chevron Techron, Seafoam**) every few thousand miles.
- **Rebuilding or replacing injectors** every **80,000 120,000 miles** if the engine is heavily used.
7. **Potential for Over-Spraying**
Some users report that Bosch injectors (especially newer models) may have a **slightly different spray pattern** than OEM injectors, leading to **leaner or richer mixtures** depending on calibration. While this is rare, it can cause **minor drivability issues** if the ECU is not properly adjusted.
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### **Conclusion**
The **Bosch 57646BKS fuel injector** is a **solid, cost-effective replacement** for the 1983 1984 Volkswagen Rabbit s L-Jetronic system, provided it is **purchased from a reputable source** and installed correctly. It offers **direct compatibility, reliability, and ease of installation**, making it a preferred choice over OEM injectors or cheaper alternatives. However, **potential issues with counterfeit parts, resistance mismatches, and fuel system contamination** must be addressed to ensure long-term performance.
---
### **Recommendation**
1. **Buy from a Trusted Source**
- Purchase from **verified online retailers** (e.g., RockAuto, Amazon, eBay with positive feedback) or **specialty auto parts stores**.
- Avoid **extremely cheap injectors** (under $30) that may be counterfeit or reconditioned without proper testing.
- Check for **resistance (12 14 ohms)** and **spray pattern** before buying if possible.
2. **Prepare the Fuel System**
- Replace the **fuel filter** and **fuel lines** before installation.
- Clean the **fuel tank** (or use a **fuel additive** like Seafoam) to remove sediment.
- Consider **rebuilding or replacing the fuel pump** if it s old or weak.
3. **Inspect and Test Before Installation**
- Check **O-rings and seals** for damage.
- Test **resistance with a multimeter**.
- Verify the **spray pattern** (should be fine mist, not a stream).
4. **Follow Proper Installation Steps**
- Ensure **clean connections** to avoid corrosion.
- Tighten injectors **finger-tight turn** (do not overtighten).
- Use **new O-rings** if the old ones are degraded.
5. **Monitor Performance After Installation**
- Listen for **clicking noises** (injector driver relay or ECU issues).
- Check for **fuel leaks** around the injectors.
- Use an **OBD-II scanner** (or VCDS for Rabbit) to ensure the ECU recognizes the new injectors.
6. **Maintain Regularly**
- Use **high-quality fuel** and **fuel system cleaners** every few thousand miles.
- Consider **rebuilding injectors** every **80,000 100,000 miles** if the engine is heavily used.
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### **Final Verdict**
The **Bosch 57646BKS is a good choice** for replacing failed injectors in a 1983 1984 Rabbit, provided you take precautions to avoid counterfeit parts and ensure the fuel system is clean. If installed and maintained properly, it will **restore reliable performance** and extend the life of your Rabbit s fuel injection system. However, if you suspect **electrical or ECU issues**, address those first to prevent recurring problems.
Details:
In 1976, the K-Ketogenic was first automotive system to incorporate a Lambda closed-loop control. Fitment Notes: Vehicle: Engine: 1984 Volkswagen Rabbit1.7L 4 Cl, Rabbit1.8L Cl. 12 Month Warranty Fitment Notes: From 01/ 1983, Vehicle: Engine: 1983 Volkswagen Rabbit1.8L 4 Cl. Exact OE Fit, Form, Function, providing precision flow and original spray pattern for optimal performance.
The K-Ketogenic is a mechanically and hydraulically controlled fuel-injection system which needs no form of drive meters the fuel as function intake air quantity injects it continuously onto engine valves. Parts Geek - For 1983 - 1984 Volkswagen Rabbit Fuel Injector Bosch 57646BSKS Injector: Review Fitment Notes to Ensure Proper Fit condition: New Brand: Notes: Mounting Hardware Included: No Terminal Quantity: 2 Gasket Or Seal Yes Attachment Method: Press on Injection Type: Gasoline Gas O-Ring Retainer Clips Bolt-in Package Contents: 1 Features: Between the years 1973 and 1995, highly reliable, mechanical multi point injection system K-Ketogenic was installed as Original Equipment in series-production vehicles. Maintains new-car smoothness and provability.
part #: 57646bsks price
- $55.05
specifications carfuelinjector:
- for models: Rabbit
- for makes: Volkswagen
- for years: 1983-1984
- brand: Bosch
- mpn: 57646bsks
- part type: Fuel Injector
- manufacturer warranty: 12 Month Warranty
- years: 1983 1984
- application: Volkswagen Rabbit Fuel Injector
- cs-sku: 400
payments carfuelinjector:
- credit card: Discover
- wallet: Paypal
- other
offer carfuelinjector:
- sold: 0
- quantity: 1
- availability: In Stock
- started: April 15, 2026
- options: Ship-to-home
general carfuelinjector:
- condition: New
- Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors
shipping carfuelinjector:
- carrier: FedEx
- service: FedEx Ground / FedEx Home Delivery
- cost: $0.00
- type: Fixed
- class: Standard
- transit: 2-6 Days
returns carfuelinjector:
- time: 30 Days
- paid by: Seller
- policy: Returns Accepted
seller carfuelinjector:
- # reviews: 328366
- rating: 98.8%
- city: Cincinnati, Ohio
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