MAZDA KD35-42-562B Secondary Air Pump Injection Hose

( Manufacturer Part Number: KD35-42-562B ), ( Part Type: Pump Hose ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Year: 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 ), ( Parts Included: Only Part Reference 15 On The Diagram Is Included ), ( Replaces Part Number: Kd3542562a )

Review MAZDA Genuine Secondary Air Injection Pump Hose fits CX-5 2013–2024

The **Mazda KD35-42-562B Secondary Air Injection Pump Hose** is a precision-engineered component designed specifically for Mazda vehicles equipped with secondary air injection systems, a critical part of the emissions control mechanism. This high-quality rubber hose is crafted to ensure optimal airflow from the secondary air injection pump to the exhaust manifold, facilitating the dilution of harmful exhaust gases during engine startup and warm-up phases. Constructed from durable, heat-resistant synthetic rubber, the hose is engineered to withstand the extreme temperatures and pressures encountered in the engine bay, maintaining its structural integrity and flexibility over extended periods of use. Its reinforced design prevents kinking, cracking, or premature wear, which can compromise the vehicle s emissions performance and potentially lead to check engine lights or reduced engine efficiency. The KD35-42-562B is a direct-fit replacement for Mazda s original equipment (OEM) hose, ensuring an exact match in dimensions and connection points, including the secure clamps and fittings that guarantee a leak-free seal. Whether used in applications such as the Mazda Miata (MX-5), Proteg , or other models featuring the KD engine family, this hose plays a vital role in meeting stringent emissions standards while supporting reliable engine operation. Its robust construction and compatibility with Mazda s secondary air injection systems make it an indispensable part of any maintenance or repair project aimed at restoring or preserving optimal vehicle performance.

**Pros and Cons of Buying a Mazda KD35/42/562B Secondary Air Injection Pump Hose**

The secondary air injection pump hose is a critical component of Mazda s air injection system, which helps reduce emissions by supplying additional air into the exhaust manifold to aid combustion. When purchasing a replacement hose, consider the following advantages and drawbacks.

### **Pros of Buying a Replacement Hose**

1. **Improved Engine Performance and Efficiency**

The secondary air injection system helps burn leftover unburned fuel in the exhaust, reducing emissions and improving fuel economy. A functioning hose ensures the system operates correctly, maintaining optimal engine performance.

2. **Prevents Emissions Failures**

A failing hose can lead to improper air injection, causing the vehicle to fail emissions tests. Replacing it ensures compliance with environmental regulations and avoids costly repairs or fines.

3. **Extends Engine Lifespan**

By properly managing exhaust gases, the air injection system reduces carbon buildup in the catalytic converter and exhaust manifold. A well-functioning hose helps maintain these components, prolonging their service life.

4. **Easy and Cost-Effective Replacement**

The hose is a relatively inexpensive part, often costing between $20 and $50, depending on the brand and quality. Replacement is a straightforward DIY job for those with basic mechanical skills, saving labor costs.

5. **Compatibility with Aftermarket Modifications**

If you plan to modify your Mazda (e.g., turbocharging, exhaust upgrades), a reliable air injection system including the hose helps mitigate emissions-related issues that could arise from increased power output.

6. **Prevents Further Damage**

A cracked or deteriorated hose can allow air leaks, leading to improper system function. Replacing it early prevents secondary issues like clogged catalytic converters or exhaust sensor failures.

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### **Cons of Buying a Replacement Hose**

1. **Potential for Counterfeit or Low-Quality Parts**

Some aftermarket hoses may be poorly made, leading to premature failure or leaks. Cheap alternatives might not fit correctly or could degrade quickly under heat and engine stress.

2. **Time-Consuming Installation (If DIY)**

While the replacement is simple, locating the hose (often near the exhaust manifold or catalytic converter) may require some disassembly. Those unfamiliar with engine components might struggle with proper routing and securing.

3. **Misdiagnosis of Symptoms**

If the issue is not the hose but another component (e.g., a failing air pump, clogged catalytic converter, or faulty O2 sensor), replacing just the hose won t resolve the problem. A proper diagnostic check is essential before purchasing.

4. **Environmental and Emissions Concerns (If System is Disabled)**

Some drivers disable the air injection system entirely (e.g., for performance tuning), which can lead to increased emissions and potential engine damage over time. This is not recommended for stock or emissions-compliant vehicles.

5. **Limited Lifespan of Aftermarket Parts**

Even high-quality aftermarket hoses may not last as long as OEM parts, especially in high-mileage or high-performance applications. Regular inspection is necessary to catch wear before failure.

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### **Conclusion**

The secondary air injection pump hose is a small but vital part of Mazda s emissions system. Replacing it is generally a wise investment to maintain engine efficiency, pass emissions tests, and prevent further damage. However, it s crucial to ensure the part is genuine or from a reputable brand to avoid premature failure.

For most Mazda owners, the benefits such as improved performance, emissions compliance, and long-term engine health outweigh the minor drawbacks. If you re unsure about the condition of other related components (like the air pump or sensors), a professional inspection is advisable before purchasing.

### **Recommendation**

- **Purchase:** Opt for an **OEM or high-quality aftermarket hose** (e.g., from brands like ACDelco, Bosch, or Mann-Filter) to ensure durability and proper fit.

- **Installation:** If comfortable with basic mechanics, replace the hose yourself. If not, consult a mechanic to confirm the issue and perform the replacement.

- **Diagnostics:** Before buying, verify that the air injection system is the root cause of your symptoms (e.g., check engine light, rough idle, or increased emissions). A scan tool can help identify related codes.

- **Maintenance:** Inspect the hose and system periodically, especially in high-mileage vehicles, to catch wear before it leads to larger problems.

In most cases, replacing the hose is a cost-effective and straightforward solution that pays off in the long run.

Details:

Parts must be resalable and in the original packaging. 2.5L vapor canister. Cavalier Mazda, 1552s Military Hwy, Chesapeake, VA 23320, Contact 757 777 3215, . Electrical parts are not returnable.

2.0L vapor canister. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

part #: kd3542562b prices

• $39.63-$45.11

specifications emissyste:

• for models: Cx-5
• for makes: Mazda
• for years: 2013-2024
• mpn: Kd35-42-562b
• part type: Pump Hose
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• year: 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
• parts included: Only Part Reference 15 On The Diagram Is Included
• replaces part number: Kd3542562a

payments emissyste:

• wallet: Paypal
• other
• credit card: Mastercard

offer emissyste:

• sold: 0
• quantity: 2
• started: April 2, 2026
• options: Ship-to-home
• availability: In Stock

returns emissyste:

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

shipping emissyste:

• class: Standard
• transit: 5-10 Days
• cost: $29.51
• type: Fixed
• service: Standard

general emissyste:

• condition: New
• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts

seller emissyste:

• city: Chesapeake, Virginia
• rating: 100.0%
• # reviews: 1162

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