BOSCH SB-1050X Fuel Injectors Gtr 1050CC G37 EV14

( Brand: Bosch ), ( Manufacturer Part Number: SB-1050X ), ( Mounting Style: Bolt-on ), ( Type: Fuel Injector ), ( Connector Color: Black ), ( Items Included: Pnp Wire Adapter Harness ), ( Connector Type: Ev6/uscar ), ( Country Of Origin: United States ), ( Fuel Type: Ethanol ), ( Performance Part: Yes )

Review BOSCH 1050cc Fuel Injectors Nissan G37 Gtr Ready fits 350Z 370Z G35 E85

The **Bosch SB 1050X 1050cc Fuel Injectors** are a premium, high-performance upgrade designed specifically for the **Nissan 350Z (Z33), 370Z (Z34), G35/G37 Coupe and Convertible, and the R35 GT-R (EV14)**, offering seamless compatibility with **E85 ethanol-blend fuels** while delivering unmatched reliability, precision, and power potential. Engineered to meet the demanding requirements of modern high-performance applications, these injectors feature a **1050cc flow rate**, providing ample fuel delivery for aggressive tuning scenarios, including forced induction setups and high-compression builds. Crafted from **high-grade stainless steel and precision-machined components**, the SB 1050X injectors ensure consistent atomization and optimal fuel distribution, reducing the risk of clogging or uneven combustion even under extreme conditions. Their **sealed O-rings and robust body construction** enhance durability, making them ideal for both street and track use, while the **wide-body design** minimizes pressure drop, allowing for smoother operation and better throttle response. Whether you're running a **turbocharged, supercharged, or naturally aspirated engine**, these injectors provide the necessary fuel flow to support higher horsepower levels without compromising efficiency. Additionally, their **E85 compatibility** ensures reliable performance across a wide range of fuel blends, making them a versatile choice for enthusiasts looking to maximize power while maintaining flexibility. Built to Bosch s exacting standards, these injectors integrate seamlessly with aftermarket tuning solutions, including **ECU remaps, standalone controllers, and fuel management systems**, allowing for precise calibration and optimal performance tuning. With their **durable build, high-flow capability, and adaptability to aggressive setups**, the Bosch SB 1050X injectors are an essential upgrade for anyone pushing their Nissan s limits whether for daily driving, track days, or high-performance street applications.

### **Pros and Cons of Buying Bosch SB-1050X 1050cc Fuel Injectors for Nissan 350Z (Z33), 370Z (Z34), G35/G37, GT-R (R35), and EV14 (E85) Applications**

#### **Pros**

1. **High Flow Capacity**

The SB-1050X injectors are rated at **1050cc/min** at 45 psi, which is significantly higher than OEM injectors (typically 600 800cc). This allows for better fuel delivery under high-power applications, including forced induction (turbo/supercharged) and high-RPM tuning.

2. **Durable Construction**

Bosch injectors are known for their **robust build quality**, featuring **stainless steel internals** and **ceramic-tipped needles** that resist wear and corrosion better than many aftermarket alternatives. This extends their lifespan, especially in aggressive tuning scenarios.

3. **Wide Compatibility**

- **350Z (Z33) 3.5L VR38DETT (VQ35DE with minor mods)**

- **370Z (Z34) 4.0L VQ40DE (with proper tuning)**

- **G35/G37 3.5L VQ35DE (stock or modified)**

- **GT-R (R35) 6.2L VR38DETT (with tuning adjustments)**

- **EV14 (E85) Works well with proper fuel system upgrades (pump, rails, etc.)**

The **1050cc size** is a popular choice for **E85 builds**, as it provides sufficient flow without requiring excessive tuning adjustments.

4. **Good for Forced Induction**

While not designed for extreme builds (e.g., 1,000 hp), these injectors can handle **moderate turbocharging (30 50 psi)** or **supercharging** when paired with a **high-flow fuel pump, upgraded fuel rails, and proper tuning**.

5. **Reliable Brand Reputation**

Bosch is a **trusted OEM supplier** for many performance applications, meaning they are **less likely to fail prematurely** compared to cheaper, no-name injectors.

6. **E85 Compatibility**

The **1050cc size** is a **common choice for E85 applications** because it strikes a balance between flow rate and practicality. Larger injectors (e.g., 1200cc ) may be needed for extreme E85 builds, but the SB-1050X is a **solid starting point** for most E85 conversions.

7. **Aftermarket Support**

These injectors are **widely available** and have **extensive tuning support** (AEM, Haltech, Link, etc.). Many tuners have experience with them, making troubleshooting easier.

---

#### **Cons**

1. **Not for Extreme Power Levels**

The **1050cc rating is at 45 psi**, meaning at **higher pressures (common in aggressive turbo builds)**, the **actual flow drops significantly**. For example:

- At **60 psi**, flow drops to ** 700cc**.

- At **80 psi**, flow drops to ** 500cc**.

This makes them **unsuited for high-horsepower builds (500 hp naturally aspirated or 700 hp forced induction)** without **additional fueling upgrades** (larger injectors, dual fuel pumps, etc.).

2. **Requires Fuel System Upgrades**

- **High-flow fuel pump** (e.g., **Walbro 450 LPH** or **EFI 600 LPH**)

- **Upgraded fuel rails** (Bosch or aftermarket)

- **Proper fuel pressure regulator tuning**

Failing to upgrade these components can lead to **fuel starvation, poor atomization, and injector failure**.

3. **Potential for Carbon Buildup**

Like all injectors, the **SB-1050X can develop carbon deposits** over time, especially in **E85 applications** (due to ethanol s drying effect). This requires **regular cleaning (e.g., CRC, Gunk, or professional ultrasonic cleaning)**.

4. **Cost**

At **$150 $250 per injector** (depending on retailer), they are **more expensive than OEM replacements** but **comparable to other high-quality aftermarket injectors** (e.g., **Denso, Delphi, or Jetron**). However, they are **cheaper than ultra-high-flow options (1200cc )**.

5. **Tuning Required**

Simply swapping in larger injectors **without tuning** can cause **rich/lean issues, misfires, or poor performance**. A **standalone or piggyback tuner** is **highly recommended** to adjust fuel maps, ignition timing, and other parameters.

6. **Not a Drop-in for All Applications**

- **VQ35DE (350Z, G35) stock**: May require **minor wiring or rail modifications** if using OEM connectors.

- **VQ40DE (370Z)**: Can work but may need **additional fueling support** due to higher displacement.

- **VR38DETT (GT-R)**: Requires **careful tuning** due to the engine s aggressive nature.

- **E85 builds**: While possible, **fuel system upgrades are mandatory** to prevent ethanol-related issues.

7. **Potential for Leakage Over Time**

Some users report **minor leakage** after extended use, though Bosch injectors are generally **more reliable than budget alternatives**. If this occurs, **replacement is straightforward**, but it s another factor to consider in longevity.

---

### **Conclusion & Recommendation**

#### **Who Should Buy Bosch SB-1050X Injectors?**

- **Naturally aspirated builds (300 450 hp)** on **VQ35DE (350Z, G35) or VQ40DE (370Z)** with **basic tuning**.

- **E85 conversions** (with **fuel pump, rails, and tuning upgrades**).

- **Moderate turbocharged builds (30 50 psi boost)** on **VQ35DE/VQ40DE** (with proper support).

- **GT-R (R35) with mild tuning** (not for extreme power).

- **Those who want a **reliable, mid-range injector** that balances cost and performance.**

- **High-horsepower forced induction (500 hp turbo, 700 hp supercharged)** without **larger injectors (1200cc ) and dual fuel pumps**.

- **Stock engines without tuning** (will run rich and waste fuel).

- **Those unwilling to invest in a **high-flow fuel pump and upgraded rails**.

- **Extreme E85 builds (100% ethanol) without proper fuel system support**.

#### **Final Recommendation**

If you are running a **naturally aspirated or mildly forced induction Nissan (350Z, 370Z, G35/G37, or GT-R)** and want **a reliable, high-flow injector without breaking the bank**, the **Bosch SB-1050X is an excellent choice**, provided you:

1. **Upgrade your fuel pump** (Walbro 450 LPH minimum).

2. **Use upgraded fuel rails** (Bosch or aftermarket).

3. **Get a tuner to adjust fuel maps and ignition**.

4. **Consider E85 with proper fuel system support** (if applicable).

For **extreme power levels (700 hp turbo, 1,000 hp supercharged, or aggressive E85 builds)**, you should **consider larger injectors (1200cc )** and **dual fuel pumps** for long-term reliability.

**Verdict:** **Good mid-range injector for most performance applications, but not for extreme builds without additional fueling upgrades.**

Details:

These high-impedance injectors provide precise fuel delivery and include Plug-and-Play PNP wire harness adapters for a seamless, no-cut installation. PNP Adapters Included: Comes complete with Plug-and-Play wire harness adapters, ensuring a direct connection to your factory Nissan/Infiniti without any cutting, splicing, or soldering. Maximize your Nissan or Infinities power potential with South Bay Fuel Injectors' 1050cc performance set. Sold as a flow-matched set and fully E85 compatible.

High-performance 1050cc fuel injectors featuring genuine Bosch EV14 technology for Nissan VQ and VR38DETT engines. Flow Rate: 1050cc/min at 43.5 PSI.

part #: sb1050x prices

• $62.88-$200.98

specifications carfuelinjector:

• for models: 350z, 370z, G35, E85
• for makes: Nissan
• brand: Bosch
• mpn: Sb-1050x
• mounting style: Bolt-on
• type: Fuel Injector
• connector color: Black
• items included: Pnp Wire Adapter Harness
• connector type: Ev6/uscar
• country of origin: United States
• fuel type: Ethanol
• performance part: Yes

shipping carfuelinjector:

• service: USPS Priority Mail Padded Flat Rate Envelope, USPS Priority Mail Express Flat Rate Envelope
• cost: $0.00
• transit: 4-10 Days
• carrier: USPS
• type: Calculated
• class: Expedited

seller carfuelinjector:

• rating: 100.0%
• city: Rockville Centre, New York
• # reviews: 2261

returns carfuelinjector:

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

general carfuelinjector:

• Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors
• condition: New

payments carfuelinjector:

• credit card: Diners-club
• wallet: Google-pay
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offer carfuelinjector:

• sold: 0
• availability: In Stock
• quantity: 1
• started: May 16, 2026
• options: Ship-to-home

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