DORMAN/AUTOGRADE 678-005 Starter Mounting Bolt Gm 019495681052 3/8-16 3-5/8 6/8

( Brand: Dorman/autograde ), ( Manufacturer Part Number: 678-005 ), ( Manufacturer Warranty: 1 Year ), ( California Prop 65 Warning: This Product Contains Chemicals Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. ), ( UPC: 019495681052 ), ( Type: Hardware, Fasteners And Fittings )

Review DORMAN/AUTOGRADE Starter Mounting Bolt Type Long 3/8-16 3-5/8 Inch Gm 6/8 Cyl

The Dorman/Autograde 678-005 starter mounting bolt is an essential automotive component designed for securing the starter motor to the engine block or bellhousing. This bolt, with a part number 678-005, is manufactured to meet the stringent requirements of original equipment manufacturers (OEMs), ensuring reliable performance and a perfect fit.

This bolt is engineered for vehicles that utilize a 3/8-16 thread pitch and have a starter motor mounting hole diameter ranging between 3-5/8 inches (9.1-14.1 cm) and a mounting hole depth of 6/8 inch (1.6 cm). This specific size and thread pitch are commonly found in various makes and models of automobiles, making this bolt a versatile option for a wide range of repair and maintenance applications.

The Dorman/Autograde 678-005 starter mounting bolt is manufactured from high-strength steel material, ensuring the necessary tensile strength to secure the starter motor effectively while withstanding the vibrations generated during vehicle operation. The bolt's head is designed with a hexagonal shape, allowing for easy engagement with a socket or wrench for successful installation and removal.

The Dorman/Autograde 678-005 starter mounting bolt is coated with a protective layer, preventing rust and corrosion, which can negatively impact the bolt's strength and performance. This coating ensures a longer service life and allows for a more efficient and cost-effective maintenance process.

The Dorman/Autograde 678-005 starter mounting bolt is a replacement part that adheres to the strictest quality standards. When installed correctly, it provides a reliable and secure connection between the starter motor and the engine block or bellhousing, ensuring optimal engine performance and a smoother driving experience.

In summary, the Dorman/Autograde 678-005 starter mounting bolt is a critical automotive component designed for securing the starter motor to the engine block or bellhousing. This bolt is engineered to meet the specifications of various makes and models of vehicles and is manufactured from high-strength steel with a protective coating, ensuring reliable performance and a longer service life.

Pros and Cons of Buying Dorman/Autograde 678-005 Starter Mounting Bolt

The Dorman/Autograde 678-005 starter mounting bolt is a replacement part designed for GM vehicles. This component is essential for securing the starter motor to the engine block. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this part.

1. OEM Equivalence: Dorman/Autograde parts are designed to meet or exceed OEM (Original Equipment Manufacturer) specifications. This means that the 678-005 starter mounting bolt will function identically to the original part.

2. Cost-Effective: Compared to purchasing an OEM part directly from the dealership, aftermarket parts like the Dorman/Autograde 678-005 are generally more affordable.

3. Wide Availability: Aftermarket parts, including the Dorman/Autograde 678-005, are widely available at various auto parts stores and online retailers.

1. Potential Quality Variations: Since aftermarket parts are manufactured by different companies, there may be variations in quality. However, reputable brands like Dorman/Autograde typically ensure consistent quality.

2. Installation Uncertainty: There is a slight chance that the aftermarket part may not fit perfectly or require additional modifications during installation, although this is less likely with a well-known and well-engineered part like the Dorman/Autograde 678-005.

3. Warranty Considerations: Original equipment manufacturer parts often come with extended warranties, which may not be the case with aftermarket parts. However, Dorman/Autograde offers a limited lifetime warranty on their parts.

The Dorman/Autograde 678-005 starter mounting bolt offers several advantages, including OEM equivalence, cost-effectiveness, and wide availability. The potential drawbacks, such as potential quality variations and installation uncertainty, are outweighed by the benefits for most consumers. Ultimately, the decision to purchase this part depends on individual preferences, budget constraints, and the specific requirements of the vehicle.

If you are in need of a starter mounting bolt for your GM vehicle and are looking for a cost-effective and reliable solution, the Dorman/Autograde 678-005 is a solid choice. This part is designed to meet or exceed OEM specifications, ensuring proper function and fit. Additionally, its wide availability and reputable brand make it an attractive option for many consumers.

Details:

part #: 678005 prices

• $15.27-$50.27

specifications toolssupp:

• brand: Dorman/autograde
• mpn: 678-005
• manufacturer warranty: 1 Year
• california prop 65 warning: This Product Contains Chemicals Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm.
• upc: 019495681052
• type: Hardware, Fasteners And Fittings

payments toolssupp:

• other
• credit card: Diners-club
• wallet: Apple-pay

general toolssupp:

• condition: New
• Motors > Automotive Tools Supplies > Other Auto Tools Supplies

seller toolssupp:

• rating: 99.3%
• # reviews: 129372
• city: Colmar, Pennsylvania

offer toolssupp:

• quantity: 2
• availability: In Stock
• started: December 22, 2025
• sold: 0
• options: Ship-to-home

returns toolssupp:

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

shipping toolssupp:

• cost: $0.00
• service: Economy, Standard, Expedited, Overnight
• type: Fixed
• class: Economy, Standard, Expedited, One-day
• transit: 4-8 Days

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