1. Exhaust & Emission Parts To Buy
  2. sku: 22581395723504731
  3. AAPF 327-59243A

AAPF 327-59243A Exhaust Manifold Cylinder 2.5L 1/03

fits model: Altima. year: 2002–2003.

327-59243a Aapf Exhaust Manifold 2.5l 4 Cylinder Thru 1/03 Fits 02-03 Altima 1157244

( Brand: Aapf ), ( Part Type: Exhaust Manifold Cylinder ), ( Conditions Options: Exhaust Manifold For Ni. ), ( Genuine Oem: No ), ( Ipn: 327-59243a )

Review AAPF Exhaust Manifold 2.5l Cylinder Thru 1/03 fits ALTIMA 2002–2003

The **AAPF 327-59243A exhaust manifold** is a high-performance, direct-fit replacement designed specifically for the **2.5L inline-4 engine** found in the **Nissan Altima models from the 2002 through 2003 production years**, including the **2003 facelift variant**. Crafted from **high-grade cast iron**, this manifold is engineered to deliver superior durability, heat resistance, and structural integrity, ensuring long-lasting performance under demanding driving conditions. The design maintains precise alignment with the factory exhaust headers, providing an exact fit that eliminates gaps, leaks, or misalignment issues that could compromise efficiency or contribute to premature wear. Unlike aftermarket alternatives that may compromise fitment or sound quality, this manifold preserves the stock exhaust tone while enhancing flow and reducing backpressure, which can lead to improved throttle response and overall engine efficiency. Its robust construction also helps mitigate the risk of warping or cracking, a common issue with lower-quality aftermarket parts, particularly in high-mileage or performance-oriented applications. Whether installed as part of a full exhaust upgrade or as a standalone component to address leaks or corrosion, the **AAPF 327-59243A** offers a reliable, factory-matched solution that restores confidence in your Altima s exhaust system while maintaining its original character. Built to meet OEM standards, this manifold is an ideal choice for enthusiasts seeking a balance of authenticity, performance, and longevity.

### **Pros and Cons of buying a AAPF 327-59243A Exhaust Manifold (2.5L, 2002-2003 Nissan Altima, 1/03)**

#### **Pros:**

1. **Direct OEM Replacement** This part is an exact factory replacement for the 2.5L SR20DE engine in the 2002-2003 Altima, ensuring proper fitment and compatibility without modifications.

2. **Reliability** Being an OEM or high-quality aftermarket part, it should perform as well as the original, reducing the risk of premature failure.

3. **Warranty Coverage** Reputable sellers (such as AAPF or authorized dealers) often provide warranties, offering peace of mind against defects.

4. **Ease of Installation** Since it s a direct drop-in replacement, installation is straightforward for those with basic mechanical skills or for a professional mechanic.

5. **Compatibility with Common Mods** If you plan to add a cat-back exhaust or turbocharger later, this manifold should integrate well with aftermarket systems.

6. **Cost-Effective for Long-Term Use** While the upfront cost may be higher than some generic parts, its durability can save money compared to frequent replacements of cheaper, lower-quality alternatives.

#### **Cons:**

1. **Higher Upfront Cost** Compared to generic or budget aftermarket manifolds, this part may be more expensive, which could be a deterrent for those on a tight budget.

2. **Potential for Counterfeit Parts** If purchased from an untrusted seller, there s a risk of receiving a knockoff that doesn t meet OEM standards, leading to leaks or poor performance.

3. **Limited Availability** As an older model-specific part, it may not be as widely stocked as more common components, requiring advance ordering or special ordering.

4. **Weight Considerations** Cast iron manifolds (common in this application) are heavier than modern stainless steel alternatives, which could slightly impact engine responsiveness in high-performance builds.

5. **Potential for Rust or Corrosion** If the original manifold was damaged by rust or road salt, the new one may also be susceptible if not properly treated or sealed during installation.

6. **Mismatch with Modern Exhaust Systems** If you re running a heavily modified exhaust system (e.g., turbocharged or high-flow), the stock manifold may become a bottleneck, requiring an upgrade.

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### **Conclusion:**

The **AAPF 327-59243A exhaust manifold** is a solid choice for restoring or replacing the original manifold in a **2002-2003 2.5L Altima** with the SR20DE engine. Its **OEM-level quality, reliability, and ease of installation** make it a practical option for both daily drivers and enthusiasts planning future modifications. However, **cost, availability, and potential counterfeit risks** should be carefully considered before purchasing.

If you re looking for a **direct, no-compromise replacement** and can afford the price, this is an excellent part. If budget is a concern, a **high-quality aftermarket alternative** (e.g., from Borla, MagnaFlow, or a trusted brand) might offer similar performance at a lower cost though always verify compatibility.

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### **Recommendation:**

- **Buy from a trusted seller** (e.g., AAPF s official website, RockAuto, or a reputable local parts store) to avoid counterfeit parts.

- **Inspect the manifold upon arrival** for casting defects, cracks, or signs of poor quality.

- **Consider a stainless steel or high-flow aftermarket manifold** if you plan to add a turbo or aggressive exhaust system later.

- **Budget for installation labor** if you re not comfortable doing it yourself, as proper sealing and bolt torque are critical.

- **Pair with a full exhaust system upgrade** if you notice leaks or want improved flow, as the manifold alone won t drastically improve performance.

**Final Verdict:** **Highly recommended for OEM replacement** prioritize sourcing and installation quality to maximize longevity.

Details:

ALTIMA 03 2.5L 4 cylinder, thru 1/03. SENTRA 03 2.5L, thru 1/03. ALTIMA 02 2.5L 4 cylinder. Exhaust Manifold For 2002 2003 Ni.

specifications emissyste:

  • for models: Altima
  • for years: 2002-2003
  • brand: Aapf
  • part type: Exhaust Manifold Cylinder
  • conditions options: Exhaust Manifold For Ni.
  • genuine oem: No
  • ipn: 327-59243a

payments emissyste:

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

returns emissyste:

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

general emissyste:

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

seller emissyste:

  • city: Kingston Springs, Tennessee
  • # reviews: 3177
  • rating: 100.0%

offer emissyste:

  • availability: In Stock
  • options: Ship-to-home
  • started: June 11, 2026
  • quantity: 1
  • sold: 0

shipping emissyste:

  • type: Fixed
  • cost: $0.00
  • class: Expedited
  • service: Expedited
  • transit: 4-7 Days
for models: altima, for years: 2002-2003, part type: exhaust manifold cylinder, conditions options: exhaust manifold for ni., genuine oem: no,
category: auto parts > car truck parts accessories > exhaust emission systems > manifolds headers, sku: 22581395723504731,
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