1. Cylinder Heads & Parts Engines Components For Sale
  2. sku: 11728222718008772
  3. INFINITI 1104094Y00

INFINITI 1104094Y00 Cylinder Head G20INFIN 306-58615

fits make: Infiniti. year: 1994–1996.

1104094y00 Infiniti Cylinder Head Fits 94-96 G20 72240

( Manufacturer Part Number: 1104094Y00 ), ( Part Type: Cylinder Head ), ( Conditions Options: Efi ), ( Genuine Oem: Yes ), ( Ipn: 306-58615 )

Review INFINITI Cylinder Head fits G20 1994–1996

The **Infiniti G20 (J30) 1104094Y00 Cylinder Head (94-96 Models)** is a precision-engineered component designed to deliver optimal performance, reliability, and longevity for the iconic 3.0L V6 engine found in the first-generation Infiniti G20, G25, and related Nissan models. This cast aluminum cylinder head, identified by its unique part number, features a robust and compact design tailored to the engine s high-revving nature, ensuring efficient combustion and superior thermal management. The head incorporates a dual overhead camshaft (DOHC) architecture, with each camshaft driving four valves per cylinder two intake and two exhaust via a sophisticated valve train system that enhances airflow and power output. The intake ports are contoured for optimal air-fuel mixture distribution, while the exhaust ports are engineered to minimize backpressure, improving exhaust scavenging and overall engine efficiency. The head is equipped with a high-quality cast structure, reinforced with precision-machined surfaces to maintain structural integrity under high-stress conditions, such as those encountered during aggressive driving or extended high-performance use. Additionally, the cylinder head includes integrated cooling passages and a robust gasket surface, designed to work seamlessly with the engine block and intake manifold to prevent leaks and maintain consistent compression. For maintenance and upgrade purposes, this cylinder head is compatible with modern aftermarket components, including high-flow intake manifolds, performance camshafts, and upgraded valve springs, allowing enthusiasts to fine-tune their engine for improved throttle response and horsepower. Whether used in a restoration project, a performance modification, or as a direct replacement for a worn or damaged original, this cylinder head exemplifies the balance of durability and performance that defines the G20 s legendary engine bay.

### **Pros and Cons of Buying a Used Infiniti G20 (1994-1996) Cylinder Head (Part Number: 1104094Y00)**

#### **Pros:**

1. **Direct Fitment** The part number (1104094Y00) is an OEM cylinder head designed specifically for the **1994-1996 Infiniti G20 (G20DE engine)**. This ensures compatibility without modifications, reducing the risk of installation issues.

2. **Reliability** Infiniti s early G20 engines (based on Nissan s VR30DE) are known for durability if maintained properly. A well-built cylinder head can last for decades with regular upkeep.

3. **Performance Potential** The G20DE engine is a solid platform for modifications (e.g., intake, exhaust, turbocharging). A fresh cylinder head can improve performance if paired with supporting upgrades.

4. **Cost-Effective Replacement** Buying a used cylinder head is significantly cheaper than purchasing a new one from Infiniti/Nissan. This makes it a practical choice for budget-conscious restorations.

5. **Availability of Parts** Since the G20 is a common car, finding related components (valve springs, seals, gaskets, etc.) is relatively easy, even in the used market.

6. **Potential for Long-Term Use** If the head is in good condition, it can last as long as the engine itself, especially if properly serviced.

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#### **Cons:** 1. **Condition Unknown** Purchasing a used part means you cannot verify its history. It may have:

- **Internal cracks** (common in aluminum heads due to thermal stress).

- **Worn valve seats or guides** (leading to leaks or poor sealing).

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

- **Warped deck** (causing head gasket failure).

2. **No Warranty** Unlike new parts, a used cylinder head typically comes with no warranty. If it fails shortly after installation, you bear the full cost of replacement.

3. **Potential for Hidden Damage** Even if the head looks fine externally, internal issues (e.g., cracked combustion chambers, seized valves) may not be visible until the engine is disassembled.

4. **Compatibility Risks** While the part number matches, slight variations in engine modifications (e.g., aftermarket intake manifolds, turbochargers) could require additional machining or adjustments.

5. **Labor Costs** Installing a cylinder head requires:

- **Removing the engine** (if not doing a full rebuild).

- **Machining the deck** (if warped).

- **Replacing seals, gaskets, and fasteners** (often necessary for a proper seal).

- **Valve job** (if valves or guides are worn).

These steps can add significant labor costs, especially if the head is not in perfect condition.

6. **Market Scarcity** While not rare, high-mileage or poorly maintained G20 heads may be harder to find in good condition. You may need to check multiple sources (eBay, junkyards, forums) before finding a suitable one.

7. **Potential for Further Engine Issues** If the head is part of a larger engine failure (e.g., seized valves, cracked block), replacing just the head may not solve the underlying problem.

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### **Conclusion:** Buying a used **Infiniti G20 (1994-1996) cylinder head (1104094Y00)** can be a **cost-effective solution** if you:

- **Inspect it thoroughly** (look for cracks, warping, or signs of overheating).

- **Test it for leaks** (pressurize with compressed air to check for cracks).

- **Are prepared for potential machining or additional repairs** (e.g., valve job, deck resurfacing).

- **Have access to a reliable mechanic** to verify its condition before purchase.

However, if you **prioritize reliability and warranty coverage**, purchasing a **new or reconditioned OEM head** (from a trusted supplier like **Nissan Parts, Summit Racing, or a local engine rebuild shop**) may be worth the higher cost.

---

### **Recommendation:** 1. **If you re on a tight budget and confident in your inspection skills:**

- **Buy used** from a **trusted source** (e.g., a known engine rebuild shop, a seller with photos/videos of the head s condition).

- **Get a valve job and deck resurfacing** done immediately after installation.

- **Consider a used head only if you can test it for leaks** (e.g., by pressurizing it with air).

2. **If you want peace of mind and long-term reliability:**

- **Purchase a new or reconditioned OEM head** (even if more expensive, it eliminates unknown risks).

- **Get all related components** (valve springs, seals, gaskets) new to ensure a proper seal.

- **Have a mechanic verify the head s condition** before installation.

3. **Alternative Approach:**

- If the head is part of a **larger engine failure**, consider **buying a used but fully rebuilt G20DE engine** (often cheaper than individual parts and eliminates guesswork).

**Final Verdict:**

A used cylinder head can be a **good deal if inspected carefully**, but it carries **higher risk than a new part**. If possible, **prioritize quality over cost** to avoid costly failures down the line.

Details:

No time to stop in. Cylinder Heads are not sold with the valve covers. INFINITI G20 94-96. We draw on more than 30 years of experience, and no part is too big or small to carry.

Note: This is a USED head NOT new. Some heads may need to be resurfaced. No expedited shipping is available.

part #: 1104094y00 prices

  • $125.00-$379.95

specifications cylinderheapar:

  • for makes: Infiniti
  • for years: 1994-1996
  • mpn: 1104094y00
  • part type: Cylinder Head
  • conditions options: Efi
  • genuine oem: Yes
  • ipn: 306-58615

payments cylinderheapar:

  • credit card: Diners-club
  • other
  • wallet: Paypal

shipping cylinderheapar:

general cylinderheapar:

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

seller cylinderheapar:

  • city: Tucson, Arizona
  • # reviews: 2251
  • rating: 100.0%

returns cylinderheapar:

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

offer cylinderheapar:

  • started: March 13, 2026
  • quantity: 1
  • best offers: True
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
for makes: infiniti, for years: 1994-1996, part type: cylinder head, conditions options: efi, genuine oem: yes,
manufacturer: infiniti, category: auto parts > car truck parts accessories > engines engine parts > cylinder heads, sku: 11728222718008772,
Infiniti 1104094Y00 Is Similar To:
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5 offers $125.00–$379.95 USD
  • Used. Offer #1 priced at $125.00 + $65.00 shipping estimate = $190.00* total. INFINITI G20 00-02.+$65.00 shipping
  • Used. Offer #2 priced at $191.86 + $0.00 shipping estimate = $191.86* total. AUTOMATIC TRANSMISSIONS WILL HAVE THE FILTER REMOVED AND IT MUST HAVE A NEW FILTER INSTALLED WITH NEW FLUID TO FUNCTION. INFINITI G20 94-96.FREE SHIPPING
  • Used. Offer #3 priced at $379.95 + $0.00 shipping estimate = $379.95* total. The valves show average build-up for the mileage ENGINE: SR20DE.FREE SHIPPING
  • Used. Offer #4 priced at $60.10 + $0.00 shipping estimate = $60.10* total. INFINITI G20 01-02 (ABS).FREE SHIPPING
  • Used. Offer #5 priced at $150.00 + $Calculated shipping estimate = $150.00* total. Cylinder Heads are not sold with the valve covers.+$Calculated shipping

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