ACURA 458653 Left Engine Cylinder Head Front 3.0L L.

( Manufacturer Part Number: 458653 ), ( Seller Notes: Lh ), ( Color: Green ), ( Genuine Oem: No ), ( Type: Engine Cylinder Head ), ( Manufacturer Warranty: 90 Day ), ( Interchange Item Code: 306 )

Review ACURA Used Left Engine Cylinder Head 3.0l L. Front fits CL 1999

The **Acura 3.0L V6 engine cylinder head (part number 458653) from a 1999 model year** represents a critical and high-performance component designed for the **H23A3 engine**, which powers the front-wheel-drive (FWD) versions of Acura s legendary **Integra Type R (DC5)** and select **Legacy (AZ3)** models. This precision-engineered cylinder head is crafted from **high-grade cast aluminum**, featuring a **dual overhead camshaft (DOHC)** design with **four valves per cylinder (2 intake, 2 exhaust)** to optimize airflow and combustion efficiency. The head incorporates **pneumatic valve lifters** for smooth operation and reduced wear, while the **intake ports** are contoured to enhance airflow velocity, contributing to the engine s sport-tuned performance. The **exhaust ports** are similarly optimized for efficient scavenging, ensuring peak power delivery across the rev range. This component is equipped with **integrated spark plug bosses**, **camshaft bearing caps**, and **valve springs** that work in tandem with the **intake and exhaust manifolds** to deliver the **220 225 horsepower** (depending on tuning and modifications) that the H23A3 is renowned for. The **1999 iteration** of this head may include subtle refinements in cooling passages and valve seat materials compared to earlier models, improving durability and resistance to heat-related wear. Whether used in a **restoration project**, **performance rebuild**, or **replacement for a failed head**, this part is essential for maintaining the engine s original high-revving character and reliability. Proper installation requires **sealing with high-temperature gasket material**, **correct torque specifications**, and **alignment with the intake manifold and camshafts** to ensure optimal performance and longevity. For enthusiasts seeking to preserve or enhance the **H23A3 s legendary driving dynamics**, this cylinder head remains a cornerstone component, blending **precision engineering with sport-tuned efficiency**.

**Pros and Cons of Buying a 1999 Acura Integra (CL3) 3.0L Front Engine Cylinder Head (Part Number 458653)**

1. **Compatibility and Fit:** The 1999 Acura Integra CL3 (and its Honda Civic-based platform) uses a well-documented engine setup, meaning this cylinder head is a direct replacement for the 3.0L J30 engine. The part number (458653) is widely recognized, reducing the risk of purchasing a mismatched or counterfeit component.

2. **Performance Potential:** The 3.0L J30 engine is a robust powerplant when properly maintained. A new or restored cylinder head can improve compression, cooling efficiency, and overall engine reliability, which may enhance performance if paired with other upgrades (e.g., intake, exhaust, or ECU tuning).

3. **Availability of Parts and Support:** As a legacy Acura/Honda model, finding replacement parts, labor support, and aftermarket modifications is relatively straightforward. There is a large community of enthusiasts who document builds, repairs, and tuning for this engine.

4. **Cost-Effective Upgrade:** Compared to a full engine rebuild or replacement, swapping out a cylinder head is a more affordable solution for addressing issues like overheating, misfires, or valve train problems. Prices for used or refurbished heads are generally lower than a complete engine.

5. **Potential for Long-Term Reliability:** If the rest of the engine (camshafts, pistons, crankshaft, etc.) is in good condition, replacing the cylinder head can extend the engine s lifespan. The J30 is known for durability when maintained properly.

6. **Aftermarket Support:** There are aftermarket cylinder heads (e.g., from companies like JE, Scat, or even performance-oriented Honda/Acura dealers) that offer improved airflow, stronger materials, or upgraded valve springs. Some of these may be compatible or serve as a reference for quality.

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1. **Age and Wear of the Engine:** A 1999 vehicle is nearly 25 years old, meaning the rest of the engine components (pistons, rods, crankshaft, seals, etc.) may be worn or approaching failure. Replacing just the cylinder head without addressing these issues could lead to recurring problems or catastrophic engine failure.

2. **Potential for Hidden Damage:** If the original cylinder head was damaged by overheating, warping, or internal failure (e.g., cracked valves, burnt exhaust ports), the new head may not solve the root cause. A thorough inspection of the engine block, head gasket, and valve train is essential before installation.

3. **Labor Intensity:** Replacing a cylinder head requires significant labor, including removing the engine from the vehicle, disassembling the head, machining (if needed), installing new gaskets, and reassembling. This is a complex job best left to experienced mechanics, which can be costly.

4. **Compatibility Risks:** While the part number suggests compatibility, slight variations in engine modifications (e.g., turbocharging, forced induction, or aftermarket camshafts) could require additional adjustments. Ensure the head matches the engine s specifications (e.g., valve sizes, porting, or bolt patterns).

5. **Quality of the Part:** If purchasing a used or refurbished head, there is a risk of receiving a head with pre-existing issues (e.g., cracks, warping, or worn valve guides). Buying from a reputable seller (e.g., a trusted mechanic, eBay with verified feedback, or a dealer with return policies) is critical.

6. **Potential for Overheating:** The J30 engine is prone to overheating, especially in high-performance applications. A new cylinder head alone won t fix cooling system issues (e.g., a failing thermostat, water pump, or radiator). Addressing these problems is necessary to prevent future failures.

7. **Cost of Additional Repairs:** If the engine has been neglected, replacing the cylinder head may uncover other issues (e.g., a seized camshaft, worn bearings, or a leaking oil pan). These repairs can add significant cost to the project.

8. **Depreciation and Resale Value:** Even with a new cylinder head, the overall vehicle and engine are aging. The resale value of a 1999 Acura Integra will remain low, and the long-term cost of ownership (fuel, maintenance, and potential repairs) may outweigh the benefits of the upgrade.

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Replacing the cylinder head on a 1999 Acura Integra CL3 3.0L engine can be a worthwhile investment if approached with caution and thorough preparation. The upgrade offers tangible benefits for performance and reliability, but it is not a standalone fix for an aging engine. The key to success lies in:

- **Diagnosing the root cause** of the engine s issues (e.g., overheating, misfires, or compression loss).

- **Ensuring the rest of the engine is in good condition** (or budgeting for necessary repairs alongside the head replacement).

- **Purchasing a high-quality head** from a trusted source and verifying its compatibility.

- **Investing in professional labor** to avoid mistakes during installation.

If the engine is otherwise sound and the project is managed carefully, a new cylinder head can significantly improve the vehicle s performance and longevity. However, if the engine is severely worn or the vehicle has high mileage with no maintenance history, the cost-benefit may not justify the upgrade.

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1. **Get a Professional Inspection:** Before purchasing the cylinder head, have a mechanic inspect the engine for signs of wear, compression, and cooling system health. This will help determine if the head replacement is sufficient or if additional work is needed.

2. **Prioritize Quality:** Buy the cylinder head from a reputable seller (e.g., a mechanic with a good reputation, a dealer with return policies, or a well-reviewed online retailer). Avoid parts with unclear histories or no warranty.

3. **Budget for Additional Repairs:** Allocate funds for potential related repairs (e.g., head gasket, water pump, thermostat, or valve train components). This ensures the project is completed without unexpected setbacks.

4. **Consider a Full Engine Rebuild:** If the engine has high mileage or signs of extensive wear, a full rebuild (including pistons, rods, and bearings) may be more cost-effective in the long run, even if it requires a larger upfront investment.

5. **Document the Process:** Keep detailed records of the inspection, parts purchased, and labor performed. This will help track progress and address any issues that arise post-installation.

6. **Test Drive and Monitor:** After installation, monitor the engine for unusual noises, overheating, or performance issues. Address any problems promptly to avoid further damage.

**Final Verdict:** If the engine is fundamentally healthy and the cylinder head replacement is part of a planned maintenance or performance upgrade, it is a reasonable investment. However, if the vehicle has a history of neglect or the engine is on its last legs, the cost may not be justified. Always weigh the immediate benefits against the long-term reliability of the project.

Details:

3.0L 6 cylinder L. Every part is Cleaned, tested and inspected by experts. Parts go back into cars rather than landfill. This part fits vehicles made in the following years 1997 ,1998, 1999, 2000 ,2001,2002.

All parts are covered by warranty. Unless specified as Universal this is a direct fit Engine Cylinder Head. Original parts mean a perfect fit.

part #: 458653 price

• $264.99

specifications cylinderheapar:

• for models: Cl
• for makes: Acura
• for years: 1999
• mpn: 458653
• seller notes: Lh
• color: Green
• genuine oem: No
• type: Engine Cylinder Head
• manufacturer warranty: 90 Day
• interchange item code: 306

general cylinderheapar:

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

payments cylinderheapar:

• other
• wallet: Paypal
• credit card: Visa

seller cylinderheapar:

• rating: 99.4%
• # reviews: 4045
• city: Harrison, Michigan

returns cylinderheapar:

• policy: Returns Accepted
• time: 60 Days
• paid by: Seller

offer cylinderheapar:

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

shipping cylinderheapar:

• carrier: UPS
• service: UPS Ground
• type: Fixed
• cost: $0.00
• class: Standard
• transit: 2-6 Days

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