Hex Flange Head Bolts (Long) For 5.7L/ 6.4L/6.2L Hemi By Mopar

The Mopar OEM Engine Bolt 6510280AA is a genuine factory replacement fastener engineered to meet Chrysler’s strict manufacturing specifications for Gen 3 HEMI engines. Whether you’re replacing worn or damaged hardware during routine maintenance or assembling a complete performance engine build, using genuine Mopar hardware helps ensure proper clamping force, accurate fitment, and long-term reliability. Unlike generic hardware that may vary in strength or dimensions, this OEM engine bolt is manufactured specifically for its intended application, making it an ideal choice for professional engine builders and DIY enthusiasts alike.

Engine fasteners play a critical role in maintaining proper alignment and securing vital engine components under extreme operating conditions. During hard acceleration, high RPM operation, towing, or forced induction applications, your Gen 3 HEMI experiences tremendous stress and vibration. Reusing stretched, corroded, or damaged bolts can compromise component retention and potentially lead to premature failures. Replacing critical hardware with genuine Mopar components helps maintain factory engineering standards while providing peace of mind for stock rebuilds and high-performance applications.

This genuine Mopar engine bolt is manufactured from high-strength materials and finished to resist corrosion and wear. Its precision-machined threads and factory dimensions ensure consistent torque values and proper installation when used according to factory service procedures. Whether you’re servicing your 5.7L HEMI, 6.1L SRT HEMI, 6.2L Hellcat, 6.4L 392 HEMI, or another compatible Gen 3 HEMI engine, OEM hardware eliminates guesswork and delivers the fit and durability expected from original equipment components.

At Dusterhoff Racing, we understand that every detail matters when building reliable horsepower. From complete forged engine packages to camshaft upgrades and routine maintenance, we recommend using genuine Mopar hardware whenever replacing critical fasteners. Pairing OEM bolts with quality gaskets, seals, timing components, and other factory replacement parts helps ensure long-lasting engine performance and dependable operation. Whether you’re performing preventative maintenance, rebuilding your engine, or assembling a high-horsepower Gen 3 HEMI combination, this Mopar Engine Bolt provides the factory-quality solution you can trust.

For additional factory replacement components, browse our OEM Mopar Parts category to find genuine Gen 3 HEMI hardware, timing components, gaskets, seals, and other essential engine parts needed to complete your build with confidence.

Specifications & Features
Manufacturer: Mopar
Manufacturer Part Number: 6510280AA
Product: OEM Engine Bolt
Product Type: Genuine Engine Fastener
Material:
High-Strength Steel
Finish:
Factory Corrosion-Resistant Coating
Color:
Natural Steel Finish
Vehicle Compatibility:
Select Dodge, Chrysler, Jeep, and RAM vehicles equipped with Gen 3 HEMI engines
Engine Compatibility:
5.7L Gen 3 HEMI
6.1L HEMI
6.2L Supercharged Hellcat HEMI
6.4L (392) HEMI
Year Compatibility:
Varies by application (verify fitment before ordering)
Precision OEM Fit and Finish
Genuine Mopar Replacement Component
Factory Thread Pitch and Dimensions
Designed to Meet Original Equipment Specifications
Helps Maintain Proper Torque Retention
Ideal for Engine Repairs, Rebuilds, and Performance Builds
Corrosion-Resistant Construction
Direct OEM Replacement
Approximate Weight:
Less than 0.25 lb.
Installation:
Install using factory service manual torque specifications
Recommended Uses:
Engine Assembly
Engine Repairs
Performance Engine Builds
Routine Maintenance
OEM Hardware Replacement