fits make: Infiniti. year: 2001–2003.

( Manufacturer Part Number: 16428QBDP ), ( Part Type: Canister Solenoid ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Vapor Canister Purge Solenoid Solenoid Valve; Vendor ), ( Years: 2001 2002 2003 ), ( Application: Infiniti Qx4 Vapor Canister Purge Solenoid ), ( Cs-sku: 400 )
The **AP 16428QBDP** is a high-performance **vapor canister purge solenoid** engineered specifically for the **Infiniti QX4** (and compatible with other Nissan models featuring the same purge valve application), designed to ensure precise control of evaporative emissions while maintaining optimal engine efficiency. Crafted from durable **stainless steel and high-grade plastic**, this solenoid is built to withstand the rigorous demands of modern automotive systems, offering long-term reliability even in demanding driving conditions. The **electrically actuated valve** operates with a smooth, silent engagement, seamlessly regulating the flow of fuel vapors from the charcoal canister to the engine s intake manifold during purge cycles, thereby preventing harmful emissions while supporting proper fuel mixture calibration. Its **direct-fit design** eliminates the need for modifications, ensuring a straightforward installation that preserves the factory wiring harness and mounting points, making it an ideal replacement for the OEM component. Engineered with **precise internal tolerances**, this solenoid delivers consistent performance, reducing the risk of leaks, clogs, or erratic operation that can lead to check engine lights or reduced fuel economy. Whether used in a **restoration project, routine maintenance, or as a direct replacement for a failing OEM part**, the **AP 16428QBDP** provides a dependable, high-quality solution that adheres to strict automotive industry standards, ensuring compatibility with the Infiniti QX4 s advanced emissions control system.
### **Pros and Cons of buying a AP 16428QBDP Vapor Canister Purge Solenoid for an Infiniti QX4**
#### **Pros:**1. **Direct Fitment** This part is specifically designed for the Infiniti QX4 (and related models), ensuring compatibility without modifications. It matches the original equipment manufacturer (OEM) specifications, reducing the risk of installation issues.
2. **High-Quality Construction** AP (Automotive Parts) is a reputable brand known for manufacturing reliable aftermarket components. The solenoid is built to withstand the demands of continuous use, particularly in systems where the purge valve cycles frequently.
3. **Cost-Effective Alternative** Compared to purchasing an OEM part (which may be more expensive or harder to source), this aftermarket solenoid offers a budget-friendly option without sacrificing performance. It can save hundreds of dollars depending on the market and availability of OEM parts.
4. **Easy Installation** The part is designed to replace the stock solenoid with minimal effort, requiring only basic tools. Most users report that it drops into place without the need for additional wiring or modifications, assuming the harness and connectors are intact.
5. **Potential Performance Benefits** A faulty purge solenoid can lead to poor fuel economy, rough idling, or check engine lights (e.g., P0440, P0441, or P0442 codes). Replacing it with a functioning unit can restore proper emissions control and engine efficiency, especially if the issue was solenoid-related rather than a larger problem (e.g., vacuum leaks or a failing canister).
6. **Warranty and Support** AP parts often come with a warranty (typically 1 2 years), providing some recourse if the solenoid fails prematurely. The brand also has a reputation for customer service, which can be helpful if issues arise post-purchase.
7. **Availability** Unlike OEM parts, which may be discontinued or difficult to find, this aftermarket solenoid is widely stocked by online retailers (e.g., Amazon, RockAuto, eBay) and local auto parts stores, reducing lead times.
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#### **Cons:**1. **Quality Variability** While AP is a trusted brand, aftermarket parts can still vary in quality depending on the batch or specific distributor. Some users report that cheaper knockoffs or counterfeit versions may exist, leading to premature failure or inconsistent performance. Always verify the seller s reputation and product authenticity.
2. **Potential Compatibility Issues** Although the part is advertised as a direct fit, minor variations in wiring harnesses or mounting brackets between years or trims of the QX4 could cause fitment challenges. It s wise to double-check the part number against your vehicle s specific year and configuration.
3. **No OEM Durability Guarantee** OEM solenoids are often built to stricter tolerances and may last longer in high-mileage or severe-use conditions. An aftermarket solenoid, while reliable, might not match the longevity of an original part, especially if the vehicle is heavily driven or exposed to extreme temperatures.
4. **Code Persistence** If the check engine light is still active after replacement, the issue might not be the solenoid itself but another component in the EVAP system (e.g., a clogged canister, faulty sensor, or vacuum leak). In such cases, further diagnostics (e.g., scanning for additional codes, inspecting hoses) may be required.
5. **Installation Risks** While the solenoid is straightforward to replace, improper handling (e.g., damaging connectors or over-tightening) could lead to electrical issues or leaks. Users with limited mechanical experience might need to consult a professional or a detailed guide to avoid mistakes.
6. **Price Fluctuations** Aftermarket prices can vary significantly based on demand, seller markup, or shipping costs. Some listings may include extra fees (e.g., for expedited shipping), which could offset the initial cost savings.
7. **Limited Customization** Unlike some high-end aftermarket parts, this solenoid does not offer performance upgrades or customization options. It is a functional replacement, not a modified component for enhanced emissions control or engine tuning.
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### **Conclusion:**The **AP 16428QBDP vapor canister purge solenoid** is a **strong, cost-effective choice** for replacing a faulty solenoid in an Infiniti QX4, provided the part is sourced from a reputable seller and the vehicle s specific needs are accounted for. It offers **direct fitment, reliability, and ease of installation**, making it ideal for DIYers or those seeking an affordable alternative to OEM parts. However, potential buyers should be aware of **quality variability, the possibility of underlying EVAP system issues, and the need for careful installation** to avoid complications.
For most users, the **pros outweigh the cons**, especially if the solenoid is the confirmed source of the problem (e.g., confirmed via diagnostic trouble codes and visual inspection). If budget is a concern and the part is purchased from a trusted retailer, this solenoid is a **recommended replacement** to restore proper emissions performance and engine function.
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### **Recommendation:**1. **Verify the Part Number** Ensure the AP 16428QBDP matches your QX4 s year and trim (e.g., 2013 2017 models). Cross-reference with your vehicle s VIN or service manual if unsure.
2. **Check the Seller s Reputation** Purchase from well-reviewed retailers (e.g., RockAuto, Amazon, or local auto parts stores with good feedback) to avoid counterfeit or low-quality parts.
3. **Inspect the EVAP System** Before replacing the solenoid, confirm that no other components (e.g., hoses, canister, sensors) are failing. Use an OBD-II scanner to clear codes and retest after replacement.
4. **Follow Installation Guidelines** Refer to the AP manual or a trusted online guide (e.g., YouTube tutorials) to ensure proper wiring and mounting. Avoid forcing the solenoid into place if it doesn t fit snugly.
5. **Monitor Performance** After installation, observe for improvements (e.g., no more check engine lights, smoother idling). If issues persist, revisit diagnostics or consider professional assistance.
6. **Consider OEM if Available** If you have access to an OEM solenoid (e.g., through a dealership or salvage yard) and it s within budget, it may offer slightly better longevity, though the AP part is a reliable alternative.
**Final Verdict:** The AP 16428QBDP is a **highly recommended replacement** for most Infiniti QX4 owners experiencing purge solenoid-related issues, balancing cost, quality, and ease of use effectively. For those prioritizing longevity over cost, an OEM part may be preferable, but the AP solenoid provides a practical and widely accessible solution.
Parts Geek - For Infiniti QX4 Vapor Canister Purge Solenoid Replacement AP 16428QBDP: Review Fitment Notes to Ensure Proper Fit condition: New Brand: Notes: Valve; Vendor: Mitsubishi Quantity Sold: Sold individually Replaces OE Number: 1495631U1A, 2M1056, EGR3156, PV422, VS156 This is an replacement for vapor canister purge solenoid OE# 1495631U1A made by. 12 Month Warranty Fitment Notes: Vehicle: Sub model: 2001 - 2003 Infiniti QX4Base.