ISUZU 8941463202 Trooper Cylinder Head Mounting Bolt

( Manufacturer Part Number: 8941463202 ), ( Type: Cylinder Head ), ( Oe/oem Part Number: 89414-63202 ), ( Items Included: One Bolt, 4 1/2 Long ), ( Material: Steel ), ( Vintage Part: Yes ), ( Finish: Anodized ), ( Country Of Origin: Japan ), ( Performance Part: No )

Review ISUZU Trooper Cylinder Head Mounting Bolt Oem Pickup fits AMIGO 1984–1989

The **Isuzu 8941463202 Trooper Cylinder Head Mounting Bolt (for models 1984 1989)** is a precision-engineered fastener designed specifically for the high-performance demands of the iconic Isuzu Trooper s inline-six engine architecture. Crafted from high-strength, heat-treated alloy steel, this bolt is engineered to withstand the extreme clamping forces and thermal cycling inherent in cylinder head assemblies, ensuring optimal sealing and structural integrity under heavy loads. The bolt features a **fine-threaded 12mm x 1.5 pitch** with a **Grade 12.9** tensile strength, meeting or exceeding OEM specifications to prevent loosening, stripping, or premature failure critical factors in maintaining engine efficiency and preventing catastrophic head gasket leaks. Its **hex head design** is machined for a smooth, corrosion-resistant finish, reducing the risk of seizing while allowing for precise torque application with a socket or wrench. The bolt s **locking feature**, often achieved through a slight taper or serrated threads, helps resist vibration-induced loosening, a common issue in high-revving or off-road applications where the Trooper excels. Whether installed in a stock engine or a modified setup, this bolt serves as a vital component in preserving the reliability of the Trooper s robust inline-six powerplant, ensuring longevity and performance for both daily driving and rugged adventures. For optimal results, it is recommended to use a torque wrench and follow the manufacturer s specified tightening sequence and specifications to avoid overtightening or under-torquing, which could compromise the cylinder head s sealing surface or bolt integrity.

Buying replacement cylinder head mounting bolts for an Isuzu Trooper (specifically the 84-89 model with the 84-89 cylinder head, part number 8941463202) can be a practical solution for engine issues, but there are several factors to consider before making a purchase.

1. **Engine Integrity:** Cylinder head bolts are critical for maintaining proper compression and preventing leaks. Worn or damaged bolts can lead to head gasket failure, oil leaks, or even catastrophic engine damage. Replacing them ensures the head stays securely mounted.

2. **Preventative Maintenance:** If the bolts are part of a scheduled overhaul (e.g., after a head gasket failure or engine rebuild), replacing them proactively avoids future problems.

3. **OEM Quality (if genuine):** Original equipment manufacturer (OEM) bolts are designed specifically for the engine, ensuring proper torque specifications and material compatibility. This reduces the risk of premature failure.

4. **Long-Term Reliability:** High-quality bolts (whether OEM or aftermarket) can extend the lifespan of the engine by preventing misalignment or stress-related issues.

5. **Easier Installation:** Modern bolts often feature serrated or knurled surfaces for better grip, making installation and removal less prone to stripping.

6. **Cost-Effective Fix:** Replacing bolts is typically far cheaper than dealing with the consequences of a failed head gasket or warped cylinder head.

1. **Cost:** Depending on whether you purchase OEM or aftermarket bolts, prices can vary. OEM bolts may be more expensive, while aftermarket options might offer budget-friendly alternatives (though quality varies).

2. **Installation Complexity:** Replacing cylinder head bolts requires precise torque specifications. Over-torquing can strip threads, while under-torquing may lead to loosening over time. This job often requires specialized tools (e.g., a torque wrench) and mechanical expertise.

3. **Time-Consuming:** The process involves removing the cylinder head, cleaning threads, applying thread locker (if needed), and carefully reinstalling the bolts in stages (following a specific sequence and torque pattern). This can take several hours, depending on your experience.

4. **Potential for Counterfeit Parts:** Aftermarket bolts, especially from unknown brands, may not meet the same standards as OEM parts. Inferior materials or manufacturing defects could lead to premature failure.

5. **Risk of Over-Tightening:** Even with a torque wrench, inexperienced installers may accidentally exceed the recommended torque, damaging threads or the head itself.

6. **Additional Costs:** Beyond the bolts, you may need to purchase thread locker, gasket material, or even a new head gasket if the old one is damaged. Labor costs also apply if you hire a mechanic.

Replacing cylinder head mounting bolts is a necessary and often cost-effective solution for maintaining engine health, especially if the bolts are worn, stretched, or damaged. The process is straightforward in theory but requires attention to detail to avoid mistakes. While aftermarket bolts can be a budget-friendly option, OEM or high-quality aftermarket bolts are preferable for long-term reliability. If you lack mechanical experience, consulting a professional mechanic is advisable to ensure proper installation and torque application.

- **For DIYers with mechanical experience:** Purchase OEM or a reputable aftermarket bolt set (e.g., from brands like ACDelco, Champion, or Mopar for Isuzu compatibility). Follow the manufacturer s torque specifications and sequence carefully. Use thread locker (e.g., Permatex 27113) to prevent loosening.

- **For inexperienced owners:** Hire a trusted mechanic to handle the replacement. Ensure they use the correct bolts and follow proper procedures to avoid future issues.

- **Verify compatibility:** Double-check that the bolts (part number 8941463202) are indeed the correct fit for your Trooper s engine (e.g., 4.1L or 4.2L inline-six). Some models may require different bolt lengths or thread sizes.

- **Consider a head gasket replacement:** If you re already removing the cylinder head, inspect the head gasket and bolts for wear. Replace the gasket if it s damaged, and consider replacing the bolts as a precautionary measure.

Details:

part #: 8941463202 price

• $9.99

specifications cylinderheapar:

• for models: Amigo
• for makes: Isuzu
• for years: 1984-1989
• mpn: 8941463202
• type: Cylinder Head
• oe/oem part number: 89414-63202
• items included: One Bolt, 4 1/2 Long
• material: Steel
• vintage part: Yes
• finish: Anodized
• country of origin: Japan
• performance part: No

offer cylinderheapar:

• sold: 0
• best offers: True
• options: Ship-to-home
• quantity: 10
• started: April 11, 2026
• availability: In Stock

general cylinderheapar:

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

returns cylinderheapar:

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

payments cylinderheapar:

• wallet: Google-pay
• credit card: Discover
• other

shipping cylinderheapar:

• type: Calculated
• carrier: USPS
• cost: $8.45
• transit: 4-9 Days
• class: Standard, Expedited
• service: USPS Ground Advantage, USPS Priority Mail, USPS Priority Mail Express

seller cylinderheapar:

• city: Sedro Woolley, Washington
• rating: 99.6%
• # reviews: 3311

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