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CUMMINS Xotic Head Stud Kit Diesel 663647155986 5.9 12V 878

fits year: 1989–1998.

Cummins 663647155986 Xotic 5.9 L 12v Head Stud Replacement Kit Cp 878 1989-1998 Diesel

( Brand: Cummins ), ( Part Type: Head ), ( Engine Size: 5.9 L ), ( Fuel Type: Diesel ), ( UPC: 663647155986 )

Review CUMMINS Xotic 5.9 12v Head Stud Replacement Kit Cp 878 Diesel fits 1989–1998

The Cummins 663647155986 Xotic 5.9 12v Head Stud Kit is a crucial upgrade for any 1989-1998 Cummins Diesel engine. This kit is specifically designed to replace the original head studs, providing enhanced performance, durability, and reliability.

The Xotic 5.9 12v Head Stud Kit includes eight (8) new ARP (Automotive Racing Products) 12mm studs, eight (8) ARP 12mm nuts, and eight (8) ARP 12mm washers. ARP is a renowned leader in the performance aftermarket industry, known for their high-quality, precision-engineered fasteners.

These studs are made from forged chrome molybdenum alloy, ensuring superior strength and longevity. The 12mm diameter studs are designed to handle increased cylinder pressures, allowing for more power to be safely extracted from the engine. The studs also feature a longer thread length, ensuring a proper sealing surface for the cylinder head gasket.

The ARP nuts included in the kit are made from 6061-T6 aluminum and are designed to provide a secure and reliable clamping force on the cylinder head. The nuts are also hard-anodized for added corrosion resistance.

The ARP washers in the kit are made from high-temperature, non-asbestos material, providing a reliable sealing surface between the cylinder head and the studs. These washers are also designed to prevent galling, ensuring a smooth and even seating of the cylinder head.

Installing this head stud kit requires the use of a proper head gasket and cylinder head sealing surfaces. It is recommended that this kit be installed by a qualified technician to ensure proper installation and torque specification.

In summary, the Cummins 663647155986 Xotic 5.9 12v Head Stud Kit is a high-quality, performance-enhancing upgrade for any 1989-1998 Cummins Diesel engine. This kit includes eight (8) ARP 12mm studs, eight (8) ARP 12mm nuts, and eight (8) ARP 12mm washers, all made from high-quality materials and designed to provide superior strength, durability, and reliability.

Cummins XP 5.9 12v Head Stud Kit (663647155986): A Detailed Analysis

The Cummins XP 5.9 12v Head Stud Kit (663647155986) is a popular upgrade for diesel engines manufactured between 1989 and 1998. This kit is designed to provide improved engine performance and durability. In this analysis, we'll discuss the potential advantages and disadvantages of investing in this product.

Advantages:

1. Enhanced Engine Performance: The 12v head stud kit offers increased clamping force, which leads to better sealing between the cylinder head and the engine block. This improved sealing can lead to better combustion efficiency and increased horsepower.

2. Durability: The high-strength head studs included in the kit are designed to withstand the high pressures and temperatures encountered in a diesel engine. This can lead to longer engine life and reduced maintenance costs.

3. Reduced Head Gasket Failures: By improving the sealing between the cylinder head and the engine block, the likelihood of head gasket failures is significantly reduced. This can save engine owners from costly repairs and downtime.

4. Compatibility: This kit is specifically designed for Cummins XP 5.9 engines manufactured between 1989 and 1998. This ensures a perfect fit and proper function.

Disadvantages:

1. Cost: The Cummins XP 5.9 12v Head Stud Kit is a significant investment. The cost of the kit may be a barrier to entry for some engine owners.

2. Installation Complexity: Installing the head stud kit requires a high level of mechanical skill and experience. This may require the assistance of a professional mechanic, adding to the overall cost of the upgrade.

3. Potential for Engine Damage: If not installed properly, the use of high-strength head studs can lead to engine damage. It is crucial that the installation is performed by a qualified mechanic.

Conclusion:

The Cummins XP 5.9 12v Head Stud Kit (663647155986) offers several advantages, including improved engine performance, increased durability, reduced head gasket failures, and compatibility. However, the significant investment required and the complex installation process may deter some engine owners. Ultimately, the decision to purchase this kit depends on the individual's priorities, budget, and mechanical expertise.

Recommendation:

If you are an engine owner who prioritizes improved performance, increased durability, and reduced maintenance costs, the Cummins XP 5.9 12v Head Stud Kit (663647155986) is a worthwhile investment. However, it is recommended that the installation be performed by a qualified mechanic to minimize the risk of engine damage.

Details:

Box is open everything accounted for. Xotic 5.9 L 12V Head Stud Replacement Kit CP 878 1989 1998 Cummins Diesel.

specifications grokengines:

  • for years: 1989-1998
  • brand: Cummins
  • part type: Head
  • engine size: 5.9 L
  • fuel type: Diesel
  • upc: 663647155986

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  • # reviews: 271
  • city: Cumberland, Ohio
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  • class: Standard
  • transit: 4-9 Days
  • carrier: USPS
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  • Car Truck Parts Accessories > Engines Engine Parts > Engines

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  • started: January 4, 2026
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for years: 1989-1998, part type: head, engine size: 5.9 l, fuel type: diesel,
category: auto parts > car truck parts accessories > engines engine parts > engines, sku: 7008546609270741,

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  • Offer #1: $307.39 price + $0.00 shipping estimate = $307.39* total. Ample clamping strength prevents cylinder heads from lifting. Manufacturer Part Number: CP878.FREE SHIPPING

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