HONDA 10003P2PA33 Cylinder Head 306-58728B 1.6L

( Manufacturer Part Number: 10003P2PA33 ), ( Model: CIVIC ), ( Part Type: Cylinder Head ), ( Conditions Options: Ex ), ( Genuine Oem: Yes ), ( Ipn: 306-58728b )

Review HONDA Cylinder Head 1.6l Canada Market fits CIVIC SI 1999–2000

The **Honda 10003P2PA33 cylinder head** is a precision-engineered component designed specifically for the **1.6L SOHC (Single Overhead Camshaft) 16-valve inline-4 engine** found in the **1999 2000 Honda Civic (EJ8/EJ9 models)**. This high-performance part is crafted from **high-grade cast iron**, ensuring durability and resistance to thermal stress while maintaining optimal heat dissipation for reliable long-term operation. The cylinder head features a **tightly machined combustion chamber** and **precision-milled valve seats**, allowing for improved airflow and efficient combustion, which directly translates to better throttle response, smoother power delivery, and enhanced fuel economy. The **integrated camshaft cover** is securely bolted in place, providing a sealed environment to protect the camshaft and associated components from contaminants, while the **intake and exhaust ports** are meticulously contoured to optimize airflow dynamics, reducing restriction and maximizing engine efficiency.

This cylinder head is compatible with **both naturally aspirated (NA) and mild performance applications**, making it an ideal upgrade for enthusiasts looking to restore stock performance or prepare their Civic for light tuning. The **standard valve springs and retainers** are included, ensuring proper valve operation and preventing issues like valve float at high RPMs. For added reliability, the head is equipped with **high-quality gaskets** that seal the intake manifold, exhaust manifold, and oil passages, preventing leaks and maintaining proper lubrication. Whether replacing a worn or damaged original part or upgrading for improved performance, this **OEM-spec cylinder head** delivers the same level of precision and quality that Honda engineers originally intended, ensuring a seamless fit and optimal engine function.

For installation, it is recommended to use **Honda-approved gasket sealant** and **torque specifications** to prevent warping or leaks, as the cylinder head plays a critical role in maintaining compression and overall engine health. Whether paired with a **stock or aftermarket camshaft**, this component serves as the foundation for a robust and responsive powertrain, making it a must-have replacement for any Civic owner seeking reliability, performance, or a full restoration.

Buying a used Honda 10003P2PA33 cylinder head for a 1.6L SI (Single Overhead Cam) Civic from the 1999-2000 model years has both advantages and disadvantages. Below is a detailed breakdown:

1. **Reliability and Durability** Honda engines, especially those from the late '90s, are known for their longevity and robust construction. The 1.6L SI engine in the 99-00 Civic is a well-regarded powerplant, and a genuine cylinder head (like the 10003P2PA33) ensures compatibility and proper fitment.

2. **Ease of Maintenance** These engines are relatively straightforward to work on, with widely available parts and service information. The cylinder head design is simple compared to more complex modern engines, making repairs and modifications easier for DIYers.

3. **Performance Potential** The 1.6L SI engine responds well to modifications, such as intake/exhaust upgrades, camshaft swaps, or porting the cylinder head. A well-maintained head can be a solid foundation for a tuned engine.

4. **Cost-Effective Replacement** Compared to buying a complete engine, a used cylinder head is significantly cheaper. This makes it a practical option if the head is the only failing component.

5. **Compatibility** The 10003P2PA33 is a direct replacement for the 1.6L SI Civic (DE and DF models), meaning it will fit without modification. It s also compatible with other Honda models from the same era, such as the Honda Accord (if using the correct valve cover and gasket).

6. **Secondhand Market Availability** Since these parts are older, they are often found in salvage yards, online marketplaces, or through engine swap groups. This increases the chances of finding a reasonably priced unit.

7. **Proven Design** The cylinder head in these engines is a proven design with minimal common failure points (beyond normal wear). If properly inspected, it can last for many more years.

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- **Worn or cracked valves** (common in high-mileage engines).

- **Exhaust port erosion** (from carbon buildup or overheating).

- **Leaking valve seals or guides** (leading to oil consumption).

- **Warped or scored valve seats** (causing misfires or poor compression).

- **Cracks in the head itself** (especially around bolt holes or the combustion chamber).

Without a thorough inspection (including pressure testing, valve seat inspection, and head gasket surface checks), you risk buying a head that will fail prematurely.

2. **No Warranty or Guarantee** Since you re purchasing a used part, there is no manufacturer warranty. If the head fails shortly after installation, you ll be responsible for the cost of replacement.

3. **Risk of Improper Installation** If the head isn t properly gasketed, torqued, or sealed, it can lead to leaks, overheating, or catastrophic failure. This requires careful attention to detail during installation.

4. **Limited Longevity Compared to New Parts** Even if the head appears serviceable, it may not last as long as a new OEM or aftermarket part. Over time, wear will inevitably occur, requiring eventual replacement.

5. **Potential for Contamination** A used head may have been exposed to oil, coolant, or debris in storage. If not cleaned properly, contaminants can cause internal damage (e.g., sludge in oil passages).

6. **Aftermarket vs. OEM Considerations** While the 10003P2PA33 is an OEM part, some buyers opt for aftermarket heads (e.g., from companies like **Honda Performance Parts, JE, or Scat**) for improved materials or machining. A used OEM head may not offer these benefits.

- **Visual inspection** (for cracks, corrosion, or damage).

- **Pressure testing** (to check for leaks in the combustion chamber).

- **Valve and seat inspection** (for wear or pitting).

- **Head gasket surface check** (for warping or scoring).

- **Bore inspection** (if the head is being reused on a rebuilt engine).

This process can be tedious and may require specialized tools.

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- **Thoroughly inspect the head** for damage, wear, and leaks.

- **Verify its compatibility** with your engine (ensure it s not mixed with parts from a different model).

- **Are prepared for potential hidden issues** (e.g., worn valves, cracked ports).

- **Have the skills or access to a mechanic** to install it correctly.

However, if you prioritize **long-term reliability, warranty coverage, or peace of mind**, purchasing a **new or remanufactured OEM or aftermarket head** (e.g., from **Honda, JE, or Scat**) may be worth the higher cost. Aftermarket options often include **machined ports, upgraded materials, or performance enhancements** that a used part cannot provide.

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- **Buy a used 10003P2PA33** from a reputable source (e.g., a salvage yard with a return policy, a trusted private seller, or an engine swap group).

- **Inspect it thoroughly** (or have a mechanic do so) before purchasing.

- **Budget for potential additional repairs** (e.g., valve replacement, port cleaning).

- **Purchase a new or remanufactured OEM head** (e.g., from **Honda Performance Parts** or an authorized dealer).

- **Consider an aftermarket head** (e.g., **JE 10003P2PA33 or Scat**) if you plan on modifying the engine, as they often include performance upgrades.

- **Get a professional inspection** before buying to avoid costly mistakes.

- **Compare prices** sometimes a used head is worth the risk, while other times a new part is the safer choice.

A used **10003P2PA33 cylinder head** can be a **good deal for budget-conscious buyers** who are willing to put in the effort to verify its condition. However, if you want a **long-lasting, hassle-free solution**, investing in a **new or high-quality aftermarket head** may be the better long-term choice. Always weigh the cost savings against the potential risks before making a decision.

Details:

Cylinder Heads are not sold with the valve covers. CIVIC 99-00 1.6L, Canada market, Si. Note: This is a USED head NOT new. No time to stop in.

Some heads may need to be resurfaced. We draw on more than 30 years of experience, and no part is too big or small to carry. No expedited shipping is available. CIVIC 99-00 1.6L, US market, EX.

part #: 10003p2pa33 prices

• $85.00-$404.67

specifications cylinderheapar:

• for models: Si, Civic
• for makes: Honda
• for years: 1999-2000
• mpn: 10003p2pa33
• model: Civic
• part type: Cylinder Head
• conditions options: Ex
• genuine oem: Yes
• ipn: 306-58728b

returns cylinderheapar:

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

payments cylinderheapar:

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

general cylinderheapar:

• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads

shipping cylinderheapar:

seller cylinderheapar:

• city: Tucson, Arizona
• # reviews: 2249
• rating: 100.0%

offer cylinderheapar:

• availability: In Stock
• started: March 13, 2026
• quantity: 1
• sold: 0
• options: Ship-to-home
• best offers: True

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