NISSAN 14075-43U0A Engine Coolant Bypass Pipe Bolt

( Manufacturer Part Number: 14075-43U0A ), ( Part Type: Pipe Engine Bolt ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Parts Included: Only Part Reference 6 On The Diagram Is Included ), ( Replaces Part Number: 1407543u00 )

Review NISSAN Genuine Engine Coolant Bypass Pipe Bolt

The **Nissan 14075-43U0A Engine Coolant Bypass Pipe Bolt** is a precision-engineered, high-quality fastener specifically designed to secure the coolant bypass pipe assembly in select Nissan vehicles, ensuring optimal thermal management and system integrity. Crafted from durable, heat-resistant materials, this bolt is engineered to withstand the high-pressure and temperature fluctuations inherent in automotive cooling systems, preventing leaks, warping, or premature failure. Its robust construction features a **fine-threaded design** for a secure, vibration-resistant fit, while the **zinc-plated finish** resists corrosion, extending the component s lifespan even in harsh environmental conditions. Positioned within the engine bay s critical cooling circuit, this bolt plays a pivotal role in maintaining proper coolant flow, preventing overheating, and safeguarding internal engine components from thermal stress. Whether installed in applications like the **Nissan Maxima, Altima, or Rogue**, this bolt adheres to strict OEM specifications, ensuring seamless compatibility with the vehicle s cooling system architecture. Its straightforward yet critical function underscores its importance in preserving engine efficiency and longevity, making it an indispensable part of any maintenance or repair process.

**Pros and Cons of buying a Nissan 14075-43U0A Engine Coolant Bypass Pipe Bolt**

The **Nissan 14075-43U0A** is a bolt used in the coolant bypass pipe assembly for certain Nissan vehicles, typically found in models like the **Altima, Maxima, or Rogue** (depending on the engine variant). Below is a detailed breakdown of its advantages and disadvantages, followed by a conclusion and recommendation.

---

### **Pros of buying a Nissan 14075-43U0A Bolt**

1. **Direct OEM Replacement** This part is manufactured to Nissan s original specifications, ensuring a proper fit and function. Using an OEM bolt reduces the risk of leaks, improper sealing, or coolant system issues that can arise from aftermarket parts that may not meet exact tolerances.

2. **Reliability and Durability** Nissan s OEM components are designed for long-term use under normal driving conditions. The bolt is made from materials that resist corrosion and wear, which is critical in a coolant system where exposure to antifreeze and heat is constant.

3. **Compatibility with Coolant System** The bolt is part of the coolant bypass pipe, which helps regulate coolant flow and temperature. A genuine part ensures the system operates efficiently, preventing overheating or poor engine performance due to restricted coolant circulation.

4. **Warranty Coverage** If purchased from an authorized Nissan dealer or a reputable online retailer, the bolt may come with a warranty. This provides peace of mind in case of defects or premature failure.

5. **Prevents Coolant Leaks** A faulty or worn-out bolt can lead to coolant leaks, which can damage the engine over time. Replacing it with an OEM part eliminates this risk, maintaining the integrity of the cooling system.

6. **Easy Installation** The bolt is a straightforward component, and replacing it typically requires minimal tools (usually just a socket wrench). Most DIYers can handle the job without professional assistance.

7. **Cost-Effective for Long-Term Use** While the upfront cost may be higher than some aftermarket alternatives, the reliability of an OEM part often means fewer future repairs related to coolant system failures.

---

### **Cons of buying a Nissan 14075-43U0A Bolt**

1. **Higher Upfront Cost** Compared to aftermarket or generic bolts, the OEM part is more expensive. This can be a drawback for budget-conscious buyers, especially if they are replacing multiple components or performing other repairs simultaneously.

2. **Limited Availability Outside Dealerships** While the part is widely available online (e.g., through Nissan dealerships, RockAuto, or Amazon), it may not be as readily accessible as generic bolts in some local auto parts stores. This could require ordering online, which may involve shipping delays.

3. **Potential for Overkill** If the bolt is the only failing component in the coolant system, some mechanics might argue that an OEM bolt is unnecessary if the rest of the system is in good condition. In such cases, a high-quality aftermarket bolt could suffice without the premium price.

4. **Risk of Counterfeit Parts** When purchasing online, there is a chance of receiving a counterfeit or low-quality OEM bolt, especially from untrusted sellers. This can lead to premature failure or compatibility issues. Buying from authorized sources (e.g., Nissan s official parts website or reputable retailers like RockAuto) mitigates this risk but requires due diligence.

5. **Not Always Necessary for Minor Issues** If the bolt failure is due to a minor issue (e.g., a loose connection or a small leak), some drivers might opt for a temporary fix (e.g., sealant or a clamp) instead of replacing the bolt entirely. However, this is not recommended for long-term reliability.

6. **Potential for Over-Replacement** In some cases, the bolt may appear to be the issue, but the root cause could be elsewhere (e.g., a cracked hose, a failing water pump, or a clogged coolant passage). Replacing only the bolt without addressing the underlying problem could lead to recurring issues.

---

### **Conclusion**

The **Nissan 14075-43U0A engine coolant bypass pipe bolt** is a critical component that, when replaced with an OEM part, provides reliability, proper sealing, and long-term performance for the vehicle s cooling system. The benefits of using a genuine Nissan bolt such as compatibility, durability, and reduced risk of leaks outweigh the drawbacks for most drivers, especially those who prioritize long-term engine health and warranty coverage.

However, the higher cost and potential for over-replacement (if the issue is not fully diagnosed) are valid considerations. If budget is a concern, a high-quality aftermarket bolt from a trusted brand (e.g., ACDelco, Bosch, or Denso) can be a cost-effective alternative, provided it meets the same specifications as the OEM part.

---

### **Recommendation**

1. **Verify the Issue First** Before purchasing the bolt, ensure that it is indeed the faulty component. Check for leaks, proper torque, and coolant pressure. If the bolt is loose or damaged, replacement is necessary. If the issue is elsewhere (e.g., a cracked hose or failing water pump), address that first to avoid repeated problems.

2. **Purchase from a Trusted Source** Buy the **Nissan 14075-43U0A bolt** from an authorized Nissan dealer, RockAuto, or another reputable online retailer to avoid counterfeit parts. Check reviews and seller ratings if buying secondhand.

3. **Consider Aftermarket Alternatives if Budget is Tight** If the bolt is the only failing part and the rest of the cooling system is in good condition, a high-quality aftermarket bolt (e.g., from ACDelco or Bosch) can be a reliable and cheaper option. Ensure it is labeled as a direct replacement for the Nissan part.

4. **Follow Proper Installation Procedures** When replacing the bolt, use the correct torque specifications (typically around **25-30 ft-lbs** for such bolts) to avoid overtightening or under-tightening, which can lead to leaks or stripped threads.

5. **Monitor the Cooling System Post-Repair** After installation, check for leaks, proper coolant pressure, and engine temperature. If issues persist, consult a mechanic to diagnose any underlying problems.

**Final Verdict:** For most drivers, the **Nissan 14075-43U0A OEM bolt** is the best choice due to its reliability and compatibility. However, if cost is a major factor and the bolt is the only known issue, a high-quality aftermarket alternative can be a practical substitute. Always prioritize proper diagnosis and installation to ensure long-term performance.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Parts must be resalable and in the original packaging. Visit us at parts.route 23 nissan, Contact 973 791 6355. Electrical parts are not returnable.

part #: 1407543u0a prices

• $43.61-$43.96

specifications ocoosys:

• for makes: Nissan
• mpn: 14075-43u0a
• part type: Pipe Engine Bolt
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• parts included: Only Part Reference 6 On The Diagram Is Included
• replaces part number: 1407543u00

general ocoosys:

• Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components
• condition: New

seller ocoosys:

• city: Butler, New Jersey
• rating: 100.0%
• # reviews: 376

shipping ocoosys:

• type: Fixed
• cost: $9.99
• service: Standard
• transit: 6-12 Days
• class: Standard

returns ocoosys:

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

offer ocoosys:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 1
• started: March 21, 2026

payments ocoosys:

• other
• credit card: Visa
• wallet: Google-pay

Nissan 14075-43U0A Is Similar To:

• 01558-00491 Nissan Genuine Oem Upper Hose Clamp (40% similar) Nissan upper hose clamp...(October 29th, 2018)
• 01558-00551 Nissan Infiniti Genuine Oem Upper Hose Clamp (38.6% similar) Keep it original, and real with genuine nissan original equipment manufacturer, oem, parts...(March 19th, 2018)
• 081a8-6121a Nissan Genuine Oem Pulley Bolt (48% similar) Delivered to your doors Twp...(March 30th, 2019)
• 11060-31u0b Nissan Infiniti 1106031u0b Genuine Oem (40.7% similar) ...(February 12th, 2017)
• 11060-3rc1a Nissan 110603rc1a Genuine Oem Water (47.6% similar) ...(February 12th, 2017)
• 11060-69f01 Nissan Jdm Genuine Oem Water Neck Outlet Used (40% similar) Condition is used. SR20DET S13 water neck...(March 20th, 2019)
• 11060-et00a Nissan 11060et00a Genuine Oem (42.4% similar) ...(May 17th, 2017)
• 11062-1kc0a Nissan Genuine Oem Water Outlet Gasket (44.4% similar) If you want the best performance and reliability possible for your nissan need genuine parts. Fort worth nissan parts offers one of the largest selections genuine...(November 3rd, 2018)
• 11062-et00a Nissan Genuine Oem Water Outlet Gasket (44.4% similar) ...(April 3rd, 2018)
• 11720-9e001 Nissan Genuine Oem Serpentine Belt (46.2% similar) ...(July 17th, 2018)
• 11950-4z800 Nissan 119504z800 Genuine Oem (40.4% similar) Keep it original, and real with genuine nissan original equipment manufacturer, oem, parts...(November 5th, 2017)