CHRYSLER 04663978AB Right Cylinder Head

( Brand: Chrysler ), ( Manufacturer Part Number: 04663978AB ), ( Part Type: Cylinder Head ), ( Id: Cd4063d4-187c-49d8-9bbf-15b376e01cfb ), ( Interchange: 306-1702d ), ( Year: 2002 )

Review CHRYSLER Dodge Right Cylinder Head Assembly Oem fits INTREPID 1998–2004

The **Chrysler 04663978AA 1998 2004 Dodge Intrepid Right Cylinder Head** is a precision-engineered component designed to deliver optimal performance and reliability for the iconic 3.5L Magnum V6 or 3.3L Magnum V6 engines found in select models of the Dodge Intrepid from 1998 through 2004. This right-side cylinder head is crafted from high-quality cast iron, ensuring durability and resistance to thermal stress, while its robust construction supports the high compression ratios and power outputs demanded by modern driving conditions. The head features a classic pushrod design, incorporating individual valve springs, retainers, and rocker arms that work in tandem to regulate the precise opening and closing of intake and exhaust valves, promoting efficient airflow and combustion. The intake ports are generously sized to maximize airflow into the combustion chamber, while the exhaust ports are engineered to minimize backpressure, enhancing exhaust scavenging and overall engine breathing. This cylinder head is compatible with the Intrepid s fuel-injected systems, including the multi-port fuel injection (MFI) setup, and is designed to integrate seamlessly with the engine s camshaft, lifters, and valve cover assembly. Whether used for a restoration project, performance upgrade, or replacement due to wear or damage, this part ensures that the engine maintains its signature smooth power delivery and longevity. Built to meet Chrysler s stringent manufacturing standards, the 04663978AA cylinder head is a critical component for maintaining the Intrepid s reputation for dependable performance and driving enjoyment.

### Pros and Cons of Buying a 1998 2004 Dodge Intrepid (Chrysler 04663978AB Right Cylinder Head)

1. **Common and Widely Available** The 3.5L V6 engine used in the 1998 2004 Dodge Intrepid is a Chrysler MDS (Multi-Displacement System) engine, which is relatively common in late '90s and early 2000s Chrysler/Dodge vehicles. This means parts, labor, and aftermarket support are widely accessible.

2. **Proven Reliability (When Maintained)** The 3.5L V6 is known for durability if it has been properly maintained. Many examples with low mileage and good service records can last well beyond 200,000 miles with basic upkeep.

3. **Modular Design Benefits** The MDS engine shares components with other Chrysler engines (e.g., 3.3L, 3.8L), making swapping parts or finding replacements easier. The modular design also means some repairs (like valve cover gaskets or oil pans) can be done without full engine removal.

4. **Aftermarket Support** There is a strong aftermarket presence for this engine, including performance upgrades (e.g., intake manifolds, exhaust headers, ECU tuning) and common reliability fixes (e.g., valve spring replacements, oil pump upgrades).

5. **Potential for Performance Tuning** With the right modifications (e.g., cold air intake, exhaust, or ECU tuning), the 3.5L can produce respectable power gains, making it a viable option for enthusiasts looking for a drivable project car or a daily with extra power.

6. **Lower Cost Compared to V8 Options** Compared to the 5.2L or 5.9L V8 engines found in other Dodge models of the era, the 3.5L V6 is significantly cheaper to maintain, repair, and replace.

7. **Parts and Labor Availability** Since this engine was widely used in Chrysler s lineup (e.g., Concorde, 300M, PT Cruiser), finding mechanics familiar with it is easier than with more obscure engines.

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- **Valve Springs** The engine is prone to valve spring failure, leading to misfires, rough idle, or complete engine failure if ignored. Replacing them is a labor-intensive job (often requiring removal of the cylinder heads).

- **Oil Pump Wear** The stock oil pump can wear out, causing low oil pressure and potential engine damage. Upgrading to an aftermarket pump is a common and cost-effective fix.

- **Rod Bearings and Camshaft Wear** Some engines develop rod bearing wear or camshaft issues, leading to oil consumption or catastrophic failure. Regular oil changes (every 3,000 5,000 miles) are critical.

- **Water Pump and Thermostat Housing Leaks** The thermostat housing and water pump are weak points, often requiring replacement to prevent overheating.

- **Head Gasket and Cylinder Head Issues** The cylinder heads can warp or crack, leading to head gasket failures or compression loss. The right head (04663978AB) may help, but the rest of the engine must be in good condition.

2. **High Maintenance Requirements** Unlike more modern engines, the 3.5L V6 demands frequent attention to prevent major failures. Neglecting maintenance (e.g., oil changes, valve spring checks) can turn a cheap car into an expensive project.

3. **Transmission Concerns** Many Intrepids of this era came with the 42LE or 44LE automatic transmissions, which are known for slipping, rough shifting, and solenoid failures. A transmission rebuild or replacement may be necessary.

4. **Electrical and Computer Issues** The MDS engine relies on the MDS system (which disables some cylinders at low loads), and the PCM (Powertrain Control Module) can develop glitches or fail over time. Reflashing the PCM or replacing it may be required.

5. **Body Rust and Structural Issues** The 1998 2004 Intrepid is prone to rust, particularly in the wheel wells, rocker panels, and floor pans. A thorough inspection of the body and frame is essential before purchasing.

6. **Depreciation and Resale Value** The Intrepid has poor resale value compared to other Chrysler/Dodge models of the era. If you plan to sell it later, this is a factor to consider.

7. **Project Car Potential** While the engine can be fun to work on, the Intrepid s body style and interior are dated. If you re looking for a modern daily, this may not be the best choice.

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The **1998 2004 Dodge Intrepid s 3.5L V6 (with the right cylinder head, 04663978AB)** can be a **great budget-friendly engine** for a project car, a daily driver with proper maintenance, or a platform for performance modifications. However, it requires **diligent upkeep** to avoid its most common failures (valve springs, oil pump, head gaskets, and transmission issues).

If you re **mechanically inclined, patient, and willing to invest time in maintenance**, this engine can be a rewarding build. If you prefer a **low-maintenance, reliable daily**, you may want to consider a more modern or less problematic engine.

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- You have **mechanical experience** or access to a trusted mechanic.

- The engine has **documented maintenance records**, especially for oil changes and valve spring replacements.

- You re prepared for **potential major repairs** (e.g., cylinder head work, transmission rebuild).

- You re buying it **for a project car, parts car, or a modified performance build** rather than a daily.

- You want a **low-maintenance, reliable daily driver**.

- The seller **cannot provide a full service history** or the engine shows signs of neglect (oil leaks, misfires, rough idle).

- You re not comfortable with **common MDS engine issues** (valve springs, oil pump, head gaskets).

- **Test the engine thoroughly** (check for misfires, oil pressure, compression, and valve spring condition).

- **Budget for common fixes** (valve springs, oil pump, head gaskets, transmission).

- **Consider a used but well-maintained example** rather than a high-mileage or neglected one.

- **Pair it with a reliable transmission** (preferably a rebuilt 42LE or 44LE).

If you re willing to put in the work, the **3.5L V6 can be a fun and capable engine** but it s not a "set it and forget it" powerplant.

Details:

DODGE INTREPID 02-04 2.7L, RH, EGR valve. DODGE STRATUS 04-05 SD, 2.7L, RH, EGR valve. DODGE MAGNUM 05 2.7L, RH, EGR valve. Cylinder Head.

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part #: 04663978ab prices

• $60.00-$1378.55

specifications cylinderheapar:

• for models: Intrepid
• for makes: Dodge, Chrysler
• for years: 1998-2004
• brand: Chrysler
• mpn: 04663978ab
• part type: Cylinder Head
• id: Cd4063d4-187c-49d8-9bbf-15b376e01cfb
• interchange: 306-1702d
• year: 2002

shipping cylinderheapar:

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

payments cylinderheapar:

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offer cylinderheapar:

• quantity: 1
• best offers: True
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: March 4, 2026

general cylinderheapar:

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

returns cylinderheapar:

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

seller cylinderheapar:

• # reviews: 14757
• city: Brush, Colorado
• rating: 99.4%

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