DODGE TRUCKS 04173385 Cylinder Head D150 3.7L 225

( Brand: Dodge Trucks ), ( Manufacturer Part Number: 04173385 ), ( Part Type: Cylinder Head ), ( Id: E86936aa-7f41-471d-bb54-010def1ae10a ), ( Interchange: 306-1232 ), ( Partout Id: A-129740580 )

Review DODGE TRUCKS Cylinder Head Assembly Oem 3.7l 225 fits 1981–1987

The **Dodge 04173385 cylinder head** for the **1981 1987 3.7L (225 cubic inch) D150 inline-six engine** is a meticulously engineered component designed to deliver reliable performance and durability in classic Chrysler-powered vehicles. This forged aluminum head, part of the iconic **LA-series engine family**, features a robust design optimized for efficient combustion and robust power delivery, making it a sought-after upgrade or replacement for enthusiasts restoring or modifying their Dodge trucks, vans, and muscle cars. The head is equipped with **five intake and five exhaust ports per cylinder**, allowing for improved airflow and better scavenging of combustion gases, which enhances both horsepower and torque output. Its **pushrod-operated overhead valve (OHV) design** ensures smooth operation, with precise valve timing controlled by a single camshaft housed within the engine block. The **cast-in cooling passages** provide excellent heat dissipation, preventing overheating and prolonging the life of critical components like the valves, seats, and spark plugs. Forged from high-quality aluminum, this head is lightweight yet structurally sound, reducing overall engine weight while maintaining rigidity to resist warping under high-performance conditions. The **integrated valve cover** not only houses the rocker arms and pushrods but also serves as a protective barrier against contaminants, ensuring longevity when paired with proper maintenance. Whether used in stock applications or as part of a tuned setup, this cylinder head is a testament to Chrysler s engineering prowess of the era, offering a balance of performance, reliability, and classic charm. Ideal for restorers, mechanics, and performance-minded drivers, the **04173385** is a key component for reviving the spirit of the **D150 s** legendary inline-six powerplant.

### Pros and Cons of Buying a 1981-1987 Dodge 3.7L (225) D150 Cylinder Head (Part Number: 04173385)

1. **Compatibility and Fitment** This cylinder head is designed specifically for the 3.7L (225 cubic inch) inline-six engine found in Dodge trucks and vans from 1981 to 1987. It will fit directly without modification, making installation straightforward for those with basic mechanical skills.

2. **Reliability and Proven Performance** The 3.7L engine is a well-known, durable powerplant that has been used in heavy-duty applications for decades. A genuine or high-quality aftermarket cylinder head ensures proper sealing, cooling, and combustion efficiency, which can extend the life of the engine if installed correctly.

3. **Easier Maintenance Access** The D150 head design allows for easier access to valves, springs, and rocker arms compared to some later or more complex engine builds. This can simplify routine maintenance like valve adjustments or head gasket replacement.

4. **Aftermarket Support** Since this engine is a classic, there is a strong aftermarket presence with availability of gaskets, seals, studs, and other related parts. This makes repairs and upgrades more accessible than on less common engine variants.

5. **Potential for Performance Upgrades** If you plan to modify the engine (e.g., porting, upgrading valves, or installing a turbo), this cylinder head can serve as a solid foundation. Some enthusiasts prefer the stock head design for its simplicity and strength.

6. **Cost-Effective Solution** Compared to rebuilding or replacing an entire engine, purchasing a used or new cylinder head is a budget-friendly way to restore engine function, especially if the rest of the engine is in good condition.

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1. **Age and Wear** If purchasing a used cylinder head, it may have signs of wear, cracks, or warping from years of use. Inspecting for cracks (especially around the valve guides or spark plug holes), checking for proper sealing surfaces, and verifying compression are critical before installation.

2. **Potential for Leaks** Older cylinder heads can develop leaks around the valve cover gasket, oil galley plugs, or spark plug holes. A thorough inspection and replacement of gaskets/seals may be necessary to prevent oil or coolant leaks.

3. **Limited Availability of New Parts** While aftermarket parts exist, finding a brand-new, OEM-quality cylinder head may be difficult or expensive. You may need to source from specialty suppliers or consider remanufactured units, which could have mixed quality.

4. **Installation Challenges** If the engine block or surrounding components (e.g., camshaft, lifters, or pushrods) are worn or damaged, the cylinder head alone won t fix underlying issues. A full engine rebuild may still be required for optimal performance.

5. **Compatibility with Modifications** Some aftermarket performance parts (e.g., high-flow heads, forged internals, or turbocharging) may not be fully compatible with the stock D150 head design. Researching modifications beforehand is essential to avoid costly mistakes.

6. **Potential for Hidden Damage** Without a visual inspection or professional testing (e.g., pressure testing for leaks or checking for warpage), hidden damage like internal cracks or corrosion could go unnoticed until after installation, leading to engine failure.

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Buying a 1981-1987 Dodge 3.7L (225) D150 cylinder head (part #04173385) can be a practical and cost-effective solution for restoring engine function, especially if the rest of the engine is in decent shape. The head s reliability, compatibility, and ease of maintenance make it a solid choice for DIYers or those working on classic trucks/vans. However, the risk of hidden damage, limited new-part availability, and potential installation challenges mean you must approach this purchase with caution.

**Always inspect the head thoroughly for cracks, warping, or leaks before buying.** If possible, test it for compression or leak-down to ensure it seals properly. For best results, pair it with a full engine service (gaskets, seals, and related components) to avoid future issues.

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- **If you re rebuilding an engine:** Purchase a **remanufactured or high-quality aftermarket cylinder head** from a reputable supplier (e.g., Summit Racing, JEGS, or a trusted local machine shop). These are often inspected, machined, and tested for performance.

- **If buying used:** Look for a head with minimal signs of wear, a smooth sealing surface, and no visible cracks. Test it for leaks and compression before installation.

- **For performance builds:** Consider whether the stock head can handle your modifications. If you re adding forced induction or significant power, you may need a ported or upgraded head.

- **Budget consideration:** If the head is part of a larger engine project, weigh the cost against rebuilding the entire engine sometimes a full rebuild is more economical in the long run.

Ultimately, this cylinder head is a **good choice for restoration or basic maintenance**, but it requires due diligence to ensure it won t become a recurring problem. For peace of mind, consult a mechanic or engine specialist before purchasing.

Details:

Search for more parts DODGE PICKUP 150. DODGE PICKUP 100 SERIES 81-87 6-225 3.7L. Cylinder Head. Model: DODGE PICKUP 150.

DODGE SAINT REGIS 81 6-225 3.7L.

part #: 04173385 prices

• $650.00-$1183.37

specifications cylinderheapar:

• for makes: Dodge
• for years: 1981-1987
• brand: Dodge Trucks
• mpn: 04173385
• part type: Cylinder Head
• id: E86936aa-7f41-471d-bb54-010def1ae10a
• interchange: 306-1232
• partout id: A-129740580

offer cylinderheapar:

• started: May 26, 2026
• quantity: 1
• best offers: True
• availability: In Stock
• options: Ship-to-home
• sold: 0

shipping cylinderheapar:

• type: Fixed
• service: Standard
• transit: 3-7 Days
• class: Standard
• cost: $0.00

payments cylinderheapar:

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

general cylinderheapar:

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

returns cylinderheapar:

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

seller cylinderheapar:

• city: Brush, Colorado
• rating: 99.6%
• # reviews: 16774

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