HONDA 4554994 Cylinder Head 306-58546 16L

( Manufacturer Part Number: 4554994 ), ( Part Type: Cylinder Head ), ( Conditions Options: 1.6, Compare ), ( Genuine Oem: Yes ), ( Ipn: 306-58546 ), ( O.e. Part Number: 12100p08010 ), ( Partout Id: A-111844291 )

Review HONDA Cylinder Head Coupe 16l fits CIVIC 1992–1995

The **Honda 4554994 Cylinder Head (16-Valve, 1.6L, 1992-1995 Civic)** is a meticulously engineered component designed to deliver optimal performance and reliability for Honda s iconic 1.6L D16Z6 engine, found in the fourth-generation Civic (1992-1995). This precision-machined cylinder head is crafted from high-quality aluminum alloy, ensuring a lightweight yet durable construction that enhances engine efficiency and thermal management. The head features a **16-valve DOHC (Double Overhead Camshaft) design**, incorporating two intake and two exhaust valves per cylinder, which significantly improves airflow dynamics for better combustion, smoother power delivery, and enhanced throttle response. The intake valves are typically **28mm**, while the exhaust valves measure **24mm**, allowing for optimized valve lift and seating, critical for maintaining peak performance and longevity.

The cylinder head is equipped with **Honda s signature valve cover**, which not only houses the camshafts and associated components but also houses the ignition system and PCV (Positive Crankcase Ventilation) valve, ensuring proper engine breathing and emissions control. The head is designed to accommodate the **1.6L D16Z6 engine s fuel injection system**, including the **Multi-Port Injection (MPI)** setup, which delivers precise fuel distribution for efficient combustion. The combustion chambers are precision-shaped to maximize compression ratios while minimizing heat buildup, contributing to both power output and fuel economy.

For durability, the cylinder head includes **high-strength valve springs, retainers, and keepers**, along with **titanium or hardened steel valve stems** to withstand the high stresses of modern engine operation. The head also features **Honda s proprietary valve train system**, including **solid lifters** (in early models) or **hydraulic lifters** (in later iterations), ensuring consistent valve clearance and reducing wear over time. The **camshafts** are machined from high-grade steel and are designed for smooth operation, minimizing noise and friction while maximizing performance.

This cylinder head is a **direct replacement part**, fully compatible with the **1992-1995 Honda Civic (fourth generation, DE/DP models)** equipped with the **D16Z6 engine**, making it an ideal choice for restorations, performance upgrades, or engine rebuilds. Whether used in a stock application or modified for increased horsepower, this head is built to meet Honda s stringent quality standards, ensuring reliable operation and longevity. Proper installation requires the use of **high-quality gaskets, torque specifications, and proper sealing procedures** to prevent leaks and maintain optimal engine function. For enthusiasts seeking to restore or enhance their Civic s performance, this cylinder head represents a critical component that balances strength, precision, and Honda s legendary engineering heritage.

### **Pros and Cons of Buying a Honda 4554994 Cylinder Head (16V, 92-95 Civic)**

1. **Performance Gains** This head is designed for higher RPM and improved airflow compared to the stock unit. It features larger valves, better porting, and often includes upgraded internals (such as stronger springs and retainers), allowing for better power output, especially when paired with a turbocharger or forced induction.

2. **Durability** Many aftermarket versions are built with higher-quality materials and machining standards than stock heads. Some include features like **nitride-coated valves, upgraded valve springs, and reinforced rocker arms**, reducing the risk of failure under aggressive driving conditions.

3. **Compatibility with Modifications** Since the 92-95 Civic is a well-supported platform, this head works well with **turbocharging, nitrous oxide (N2O) setups, and high-performance camshafts**. It is also a common choice for **swapped engines** (e.g., into later Civics or Integra models).

4. **Cost-Effective Upgrade** Compared to a full engine swap or a brand-new high-performance engine, replacing just the cylinder head is a **budget-friendly way to significantly improve power**. Prices vary, but a quality aftermarket head can often be found for **$300 $800**, depending on brand and modifications.

5. **Easier Installation** Unlike some engine swaps, replacing a cylinder head is a **relatively straightforward job** for those with mechanical experience. It requires removing the head, installing the new one, and performing basic adjustments (valve lash, timing, etc.).

6. **Aftermarket Support** There is a **large community of builders** who have tested and optimized this head for various applications. Tuning files, build guides, and troubleshooting resources are widely available online.

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1. **Potential for Leaks** Some aftermarket heads (especially cheaper ones) may have **poor sealing surfaces** or **inconsistent machining**, leading to **oil or coolant leaks** around the valve cover, oil filter housing, or head gasket area. Proper sealing kits and gasket replacement are essential.

2. **Requires Supporting Modifications** Simply installing this head **without other upgrades** (such as a **turbocharger, intercooler, or tuned ECU**) may not yield significant power gains. The stock engine may struggle with the increased airflow, leading to **detonation, poor reliability, or even engine damage** if not properly supported.

3. **Valvetrain Stress** The **larger valves and higher lift** of this head can put extra stress on the **camshaft, lifters, and pushrods**. If the stock valvetrain is not upgraded (e.g., **stiffer pushrods, upgraded rocker arms**), it may lead to **valvetrain failure** under high RPM or boost.

4. **Head Gasket Issues** Some users report **head gasket failures** when using this head, particularly if the engine is modified for forced induction. **Proper head gasket selection** (e.g., **Fel-Pro or ARP**) and **correct torque specifications** are critical to prevent catastrophic failure.

5. **Tuning Required** The stock ECU is **not optimized** for this head, especially under forced induction. A **custom tune** (or even a simple **stock tune with adjustments**) is nearly always necessary to prevent **knocking, poor fuel economy, or engine damage**.

6. **Potential for Overbuilding** If the rest of the engine (e.g., **block, crankshaft, pistons**) is not upgraded to match the head s capabilities, it can lead to **premature wear or failure**. For example, a **stock bottom end** may not handle the extra stress of a turbocharged setup with this head.

7. **Quality Variability** Not all aftermarket heads are created equal. **Cheaper brands** may have **poor machining, weak internals, or inconsistent quality control**, leading to **leaks, warping, or premature failure**. Researching brands (e.g., **JE, JMS, or custom-built heads**) is important.

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The **Honda 4554994 cylinder head (16V, 92-95 Civic)** is a **strong, cost-effective upgrade** for those looking to **increase power, improve reliability, or prepare the engine for forced induction**. It is particularly well-suited for **turbocharged builds, nitrous setups, or high-RPM applications** where stock heads would struggle.

However, it is **not a "plug-and-play" solution** it requires **supporting modifications** (tuning, valvetrain upgrades, sealing kits) to avoid reliability issues. If installed correctly with proper supporting parts, it can **significantly enhance performance** without the expense of a full engine swap.

For **stock or lightly modified engines**, the gains may be modest, but for **serious builders**, this head is a **proven and popular choice**.

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1. **Choose a Reputable Brand** Opt for **well-reviewed aftermarket heads** (e.g., **JE, JMS, or custom-built units**) rather than unknown or ultra-cheap options.

2. **Upgrade Supporting Components**

- **Valvetrain** (stiffer pushrods, upgraded rocker arms, stronger springs)

- **Sealing Kits** (head gasket, valve cover gasket, oil filter housing gasket)

- **Cooling System** (larger radiator, upgraded water pump if turbocharging)

3. **Get a Custom Tune** A **standalone ECU (e.g., Haltech, Link, or AEM)** or a **well-tuned stock ECU** is essential to prevent knocking and optimize performance.

4. **Consider a Full Engine Build** If you plan to **turbocharge or run high boost**, you may also want to **upgrade the block, crankshaft, and pistons** to match the head s capabilities.

5. **Test Before Full Commitment** If possible, **borrow or rent a similar setup** to see how it performs before committing to a full build.

**Good for:** Turbocharged builds, nitrous setups, high-RPM applications, and those looking for a **budget-friendly performance upgrade**.

**Not ideal for:** Stock or lightly modified engines without supporting mods, those unwilling to invest in tuning and valvetrain upgrades.

If you proceed with caution and make the necessary supporting modifications, this head can **greatly enhance your Civic s performance** while remaining a **cost-effective alternative to a full engine swap**.

Details:

Specific item information and warranty is posted on the listing. Buyers must be willing to answer their calls and discuss the delivery of item with carrier. We ask that you verify the actual condition versus what are expecting to prevent any issues later. A telephone number is required.

The pre-installation maintenance items are as follows: Drain and replace engine oils to manufacturers suggested levels. Residential Limited Access fees range from $50-$100. They are not reflective of the actual part or condition being sold. We prefer it, its faster and it provides a written record for your protection ours.

Oversize charges are implemented for items over using the same formula and if its 130 an $100.00 charge is applied. The difficulty as you can see is placing exact charges on each listing when so many variables are present. Visual flaws still may be present as the item is used. Common used part visual blemishes most likely present.

Most carriers do not allow hand unloading. Replace Oil Filter, Valve Cover Gaskets, Pan Gasket Rear Main Seal, Inspect and replace, if needed, timing gears, chains or belts gaskets, thermostat gasket, Flush cooling system refill with antifreeze to appropriate level, Install New Spark Plugs, Belts Hoses. Orders placed after 10:00 am CST cannot be guaranteed shipping that day if option applies to your listing. Essentially this means that the item may be in better or worse condition than stated.

That is not the way this system was designed. A condition does not mean new or perfect it means the item is in great used. A business/commercial delivery address is required for the stated shipping price. As well charges are based on dimensional weight, not actual weight.

A Home-based business, or a farm, do not qualify as business/commercial address for logistical purposes. Please verify identification numbers, wheelbase measurements, and ID codes. This system was designed as a benchmark with certain understandings. If an RMA# is not provided there may be a delay in processing the return.

Are NOT included with this listing. Lift gate Fees range from $50-$100. This may vary during heavy traffic time periods and buyers would be notified of any anticipated delay. Not allowing an item to be delivered is the same as refusing it.

part #: 4554994 price

• $150.00

specifications cylinderheapar:

• for models: Civic
• for makes: Honda
• for years: 1992-1995
• mpn: 4554994
• part type: Cylinder Head
• conditions options: 1.6, Compare
• genuine oem: Yes
• ipn: 306-58546
• o.e. part number: 12100p08010
• partout id: A-111844291

general cylinderheapar:

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

shipping cylinderheapar:

• transit: 3-8 Days
• class: Standard
• service: FedEx Ground / FedEx Home Delivery
• cost: $107.49
• type: Calculated
• carrier: FedEx

offer cylinderheapar:

• started: February 10, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 1
• sold: 0
• best offers: True

seller cylinderheapar:

• city: Arena, Wisconsin
• rating: 99.9%
• # reviews: 9609

returns cylinderheapar:

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

payments cylinderheapar:

• wallet: Google-pay
• other
• credit card: Diners-club

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