MOPAR 04591090 Emission Port

( Manufacturer Part Number: 04591090 ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Parts Included: Only Part Reference 12 On The Diagram Is Included )

Review MOPAR Genuine Emission Testing Port

The **Mopar 04591090 Emission Port** is a precision-engineered component designed specifically for Chrysler, Dodge, and Jeep vehicles equipped with the **4.7L Pentastar V6 engine** (found in models like the 2011 2013 Chrysler 200, Dodge Avenger, and Jeep Patriot). This high-quality aftermarket part replaces the factory emission port, ensuring optimal performance, compliance with emissions regulations, and seamless integration into the vehicle s exhaust system. Crafted from durable **stainless steel**, the 04591090 port is built to withstand the rigors of daily driving, resisting corrosion, heat, and road debris while maintaining structural integrity over an extended service life. Its **threaded design** matches the original equipment manufacturer (OEM) specifications, guaranteeing a secure and leak-free fit when properly installed, which is critical for maintaining proper exhaust flow and engine efficiency. Beyond its functional reliability, this emission port contributes to the vehicle s overall emissions performance by adhering to **OBD-II and EPA standards**, helping to minimize harmful exhaust emissions while supporting the engine s optimal operation. Whether used in a routine maintenance upgrade or as part of a performance tuning project, the Mopar 04591090 emission port delivers a balance of durability, compatibility, and performance, making it a trusted choice for mechanics and enthusiasts alike.

### **Pros and Cons of buying a Mopar 04591090 (Emission Port, Part #4591090)**

1. **Compatibility** This part is designed specifically for certain Mopar engines (such as the 5.7L Magnum, 6.1L Hemi, or other high-performance applications) and is a direct replacement for OEM emission ports, ensuring proper fitment without modifications.

2. **Performance Benefits** The emission port plays a role in exhaust flow, helping maintain optimal engine performance, especially in high-output applications. A properly functioning port can reduce backpressure, improving throttle response and fuel efficiency.

3. **Durability** Mopar parts are generally built to last, especially when sourced from authorized dealers or reputable aftermarket suppliers. The 04591090 is likely made from high-quality materials, such as stainless steel or heat-treated aluminum, depending on the engine application.

4. **Emission Compliance** Since this is an OEM or OEM-equivalent part, it should meet federal emissions standards, preventing potential issues with vehicle inspections or emissions testing in regions with strict regulations.

5. **Ease of Installation** Being a direct replacement, this part should fit standard exhaust systems without requiring extensive modifications. Installation typically involves basic tools and can be done by a DIY mechanic or a professional.

6. **Warranty Coverage** Purchasing from an authorized Mopar dealer or a trusted supplier may include a warranty, providing peace of mind against defects.

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1. **Cost** As an OEM or high-quality aftermarket part, the 04591090 may be more expensive than generic or knockoff alternatives. Pricing can vary depending on the supplier, but it is likely to be a premium part.

2. **Limited Availability** Depending on the region, this specific part may not be readily available at all auto parts stores. It may require ordering from an online supplier or a Mopar specialty dealer, which could delay repairs.

3. **Potential Counterfeit Risks** If purchased from an untrusted source, there is a risk of receiving a counterfeit or low-quality replica. Always verify the supplier s reputation before buying.

4. **Compatibility Issues** While designed for specific applications, modifications (such as exhaust tuning or performance upgrades) could require additional parts or adjustments to ensure proper function.

5. **Installation Complexity** Some vehicles may require additional labor (e.g., removing catalytic converters, adjusting brackets, or sealing gaskets) to install the port correctly. A professional installation may be necessary for optimal results.

6. **Overkill for Basic Repairs** If the emission port is only damaged due to minor corrosion or a leak, a cheaper alternative (such as a repair kit or a less expensive aftermarket part) might suffice without the need for a full OEM replacement.

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The **Mopar 04591090 emission port** is a high-quality, reliable replacement part ideal for those who prioritize performance, durability, and OEM-level compatibility. It is particularly beneficial for high-performance applications, emissions-compliant vehicles, or when replacing a failed original part. However, its higher cost and potential availability issues may make it less appealing for budget-conscious buyers or those seeking quick, low-cost fixes.

If you are restoring a classic Mopar vehicle, working on a high-output engine, or ensuring emissions compliance, this part is a strong choice. For basic repairs or cost-sensitive projects, a lower-cost alternative might be more practical.

- **Buy from an authorized Mopar dealer or a reputable aftermarket supplier** (such as RockAuto, Summit Racing, or a local performance shop) to ensure authenticity and warranty coverage.

- **Verify compatibility** with your specific engine and vehicle model before purchasing.

- **Consider installation difficulty** if unsure, consult a professional mechanic to avoid mistakes.

- **Compare pricing** while this is a premium part, check if a high-quality aftermarket alternative (e.g., from ARP, Flowmaster, or MagnaFlow) offers similar performance at a lower cost.

Ultimately, the **04591090 is a sound investment for performance and reliability**, but weigh the cost against your budget and project needs.

Details:

845 294 5179. Parts must be resalable and in the original packaging. Electrical parts are not returnable. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

part #: 04591090 prices

• $17.05-$18.94

specifications emissyste:

• for makes: Mopar
• mpn: 04591090
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• parts included: Only Part Reference 12 On The Diagram Is Included

seller emissyste:

• # reviews: 1
• city: Goshen, New York
• rating: 100.0%

shipping emissyste:

• class: Standard
• cost: $10.99
• transit: 4-8 Days
• service: Standard
• type: Fixed

general emissyste:

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

payments emissyste:

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

returns emissyste:

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

offer emissyste:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: February 26, 2026
• quantity: 4

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