ACURA 16620-RN0-A01 Fuel Rail Injector 6X 3.5-3.7L

( Manufacturer Part Number: 16620-RN0-A01 ), ( Type: Fuel Injector ), ( Manufacturer Warranty: 1 Month ), ( Oe/oem Part Number: Rk1a0f0-034781, Rk1a0f0034781, Rk1a0r0-034782, Rk1a0r0034782 ), ( Fuel Type: Gasoline )

Review ACURA Fuel Rail 6x Injector 3.5-3.7l fits TL MDX 2009–2014

The **Acura 16620-RN0-A01 (2009 2014) Fuel Rail 6x Injector for 3.5L 3.7L V6 Engines (TL/MDX)** is a high-performance, direct-injection fuel rail assembly designed specifically for Acura s **J35A8 and J35A9 3.5L 3.7L V6 engines**, found in the **2009 2014 Acura TL and MDX models**. This precision-engineered component is a critical part of the vehicle s fuel delivery system, ensuring optimal fuel atomization and combustion efficiency for both daily driving and spirited performance. Crafted from durable, corrosion-resistant materials, the **6x injector rail** integrates seamlessly with the engine s **direct-injection fuel system**, delivering a consistent and precise spray pattern to each cylinder s combustion chamber. The **RN0-A01 variant** is particularly notable for its compatibility with **Acura s Variable Valve Timing and Lift Electronic Control (VTEC)** systems, allowing for dynamic adjustments in fuel delivery based on engine load, throttle position, and operating conditions. Whether used for routine maintenance, performance upgrades, or engine rebuilds, this fuel rail assembly is engineered to maintain peak fuel efficiency, reduce emissions, and enhance engine responsiveness critical factors for both reliability and power output in Acura s high-performance V6 applications. Built to meet or exceed OEM specifications, it ensures a tight seal, minimal fuel leakage, and consistent injector operation, making it an essential replacement part for mechanics and enthusiasts seeking to restore or upgrade their vehicle s fuel system.

### **Pros and Cons of Buying a 2009-2014 Acura MDX (3.5L-3.7L V6 with Fuel Rail 6x Injector Issue)**

#### **Pros**

1. **Reliability and Durability** The Acura MDX (based on the Honda MDX) is known for its solid platform, especially the 3.5L V6 (J35) and later 3.7L V6 (J37) engines. These engines are robust and can last well over 200,000 miles with proper maintenance.

2. **Fuel Rail 6x Injector Issue (Mitigated Risk)** The 2009-2014 models with the **fuel rail 6x injector problem** (where injectors can fail due to carbon buildup or internal wear) is a known issue, but it is **not catastrophic**. Many owners resolve it with **injector replacement or cleaning**, and the engine remains functional afterward. Unlike some other failures (e.g., timing chain stretch in older Honda Civics), this does not typically destroy the engine if addressed early.

3. **Good Resale Value** Acura MDX holds its value better than many luxury SUVs, especially compared to competitors like the Lexus RX or Cadillac XTS. A well-maintained 2009-2014 model can still fetch a decent price.

4. **Comfortable and Spacious Interior** The MDX offers a **roomy cabin**, smooth ride, and **high-quality materials** (especially in later years). The **all-wheel-drive (AWD) system** is reliable and performs well in light snow and wet conditions.

5. **Available V6 Power (3.5L & 3.7L)**

- The **3.5L J35** (2009-2012) produces **270-280 HP** and is a **proven, durable engine** if maintained.

- The **3.7L J37** (2013-2014) is slightly more refined with **280-290 HP** and better fuel economy ( 18-20 MPG combined).

- Both engines are **less prone to major failures** compared to some turbocharged or high-mileage V8 alternatives.

6. **Safety Features** The MDX comes standard with **stability control, multiple airbags, and good crash-test ratings** (IIHS Top Safety Pick in some years). Later models (2013 ) include **blind-spot monitoring and rear cross-traffic alert**.

7. **Affordable Luxury SUV** Compared to a Lexus RX or BMW X5, the MDX offers **similar comfort and features at a lower price**, making it a practical choice for those who want luxury without the premium cost.

8. **Easy to Maintain** Acura (and Honda) dealerships are widely available, and **parts are reasonably priced**. The **transmission (6-speed automatic)** is smooth and reliable, with no major known failures.

9. **Off-Road Capability (Optional)** The **MDX Sport** (2013-2014) and some earlier models offer **higher ground clearance and a more aggressive stance**, making them slightly better for light off-roading than the base model.

10. **Good Used Market Availability** You ll find **plenty of options** in this age range, allowing you to **shop around for the best price** and avoid a lemon.

---

#### **Cons**

1. **Fuel Rail 6x Injector Problem (Main Concern)**

- The **most significant issue** with these models is the **fuel rail-mounted injectors**, which can **fail prematurely** (often around **80,000-120,000 miles**) due to **carbon buildup or internal wear**.

- **Rough idle**

- **Misfires (check engine light with P0171/P0174 codes)**

- **Poor acceleration**

- **Fuel smell**

- **Fix:** Replacing the injectors ( $1,200-$1,800 installed) or **cleaning them** ( $300-$600) resolves the issue, but **delaying repairs can lead to further damage** (e.g., catalytic converter failure).

- **Note:** The **3.7L J37 (2013-2014) is slightly less prone** to this issue than the 3.5L, but it still exists.

2. **Transmission Issues (Less Common but Possible)**

- Some owners report **rough shifting or delayed engagement** in the **6-speed automatic**, but this is **rare** compared to other SUVs in this class.

- **Preventative measure:** Ensure the **transmission fluid is changed every 60,000 miles** (some owners skip this, leading to premature wear).

3. **Infotainment System (Outdated by 2024 Standards)**

- The **2009-2014 MDX uses a basic Honda/Acura multimedia system** with **no Apple CarPlay/Android Auto**.

- Later models (2015 ) have **better screens and connectivity**, but if you prioritize modern tech, this could be a downside.

4. **Rear Seat Comfort (Tight for Adults)**

- While spacious, the **rear seats are not as comfortable as in larger SUVs** (e.g., Lexus RX). Legroom is **adequate but not luxurious**, and the **cargo space is decent but not massive** ( 18.5 cu. ft. behind rear seats).

5. **Resale Depreciation**

- Like most SUVs, the MDX **loses value quickly**. If you plan to sell in **3-5 years**, the depreciation may eat into your investment.

6. **Higher Maintenance Costs Than Compact Cars**

- While not as expensive as a BMW or Mercedes, **Acura parts and labor are more costly than a Honda CR-V or Toyota RAV4**.

7. **No Hybrid Option**

- If fuel efficiency is a major concern, the MDX **does not offer a hybrid variant**, unlike some competitors.

8. **Some Electrical Gremlins**

- A few owners report **intermittent electrical issues** (e.g., door locks, power seats, or infotainment glitches), but these are **not widespread**.

9. **Tires and Suspension Wear**

- The MDX is **heavier than a compact SUV**, so **tires and suspension components wear faster** if driven aggressively.

10. **Noisy Cabin at High Speeds**

- Some owners notice **wind noise and road noise** becoming noticeable at **highway speeds**, though this is common in many SUVs.

---

### **Ending Conclusion**

- **Best for:** Buyers who want a **reliable, comfortable, and spacious SUV** at a **lower luxury price**, and who are **willing to address the injector issue** (if present).

- **Worst for:** Those who **cannot afford injector repairs**, want **modern tech (CarPlay/Android Auto)**, or prioritize **off-road capability** (the MDX is not a true off-roader).

- If you **find a well-maintained example** (with **service records proving injector replacements or cleanings**), it can be a **great long-term SUV**.

- If you **ignore the injector issue**, you risk **expensive repairs down the line** (though the engine itself is durable).

- Compared to **alternatives like the Lexus RX, Toyota Highlander, or Honda Pilot**, the MDX offers **similar comfort at a lower cost**, but with **higher maintenance risks**.

---

### **Recommendation**

- **Injector condition** (listen for misfires, check for codes).

- **Transmission fluid condition** (should be clean, not burnt).

- **Timing chain/guide wear** (though rare in these engines, it s worth confirming).

- **High mileage (over 150,000 miles) without injector service**.

- **A history of rough idling or check engine lights**.

- **Neglected maintenance (oil changes, timing belt replacement if due)**.

- **Budget for injector replacement ( $1,200-$1,800)** or **cleaning ( $300-$600)**.

- If the seller **already fixed it**, ask for **proof (receipts, service records)**.

- If they **won t fix it**, walk away this is a **dealbreaker**.

- **2015 Acura MDX** (avo

Details:

Shipping prices for ground apply only to the continental USA. Item condition: The item is in good condition, fully operational, and demonstrates normal signs of use. All electronics are tested before removed from vehicle. For local orders, pay on pickup available.

part #: 16620rn0a01 prices

• $44.49-$101.88

specifications carfuelinjector:

• for models: Tl, Mdx
• for makes: Acura
• for years: 2009-2014
• mpn: 16620-rn0-a01
• type: Fuel Injector
• manufacturer warranty: 1 Month
• oe/oem part number: Rk1a0f0-034781, Rk1a0f0034781, Rk1a0r0-034782, Rk1a0r0034782
• fuel type: Gasoline

shipping carfuelinjector:

• class: Standard
• transit: 2-6 Days
• service: Standard
• cost: $0.00
• type: Fixed

offer carfuelinjector:

• sold: 0
• options: Ship-to-home
• best offers: True
• quantity: 1
• availability: In Stock
• started: February 5, 2026

payments carfuelinjector:

• wallet: Apple-pay
• credit card: Mastercard
• other

seller carfuelinjector:

• # reviews: 4223
• rating: 100.0%
• city: Rancho Cordova, California

returns carfuelinjector:

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

general carfuelinjector:

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

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