Chevy Big Block Long Water Pump Upgraded Alternator Bracket - Polished
Chevy Big Block Long Water Pump Upgraded Alternator Bracket - Polished
SKU: SKU: JM9123P
In stock
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Product Details
Features
- Application-Specific Mounting: Designed around the specified engine and accessory drive layout to help maintain proper alternator positioning and belt alignment.
- Upgraded Upper and Lower Bracket Design: Provides enhanced alternator support and stability while integrating with compatible Big Block Chevrolet accessory drive systems.
- Durable Billet Aluminum Construction: Manufactured from billet aluminum to provide strength, durability, and reliable alternator support in street, restoration, marine, and performance applications.
- Polished Engine Bay Appearance: The polished finish enhances engine compartment appearance and complements restoration, muscle car, street rod, truck, marine, and custom performance builds.
Description
Upgrade your accessory drive system with this Chevy Big Block Long Water Pump Upgraded Alternator Bracket featuring a polished finish and precision-machined billet aluminum construction. Designed for compatible Big Block Chevrolet engines equipped with a long water pump, this bracket provides secure alternator mounting while creating a cleaner, more organized accessory drive layout and engine bay appearance.
This Big Block Chevy alternator bracket is engineered for GM 10SI alternator applications and helps maintain proper alternator positioning and belt alignment during street driving, restoration projects, marine applications, and performance builds. The upgraded upper and lower bracket design provides increased mounting support while integrating with compatible Big Block Chevrolet accessory drive layouts.
Whether you're replacing worn alternator mounting hardware on a 396, 402, 427, 454, or 502 Big Block Chevy engine, or completing a fresh engine build, this long water pump alternator bracket delivers dependable performance and polished billet styling. Its precision-machined billet aluminum construction is designed to withstand engine vibration and normal accessory drive loads while maintaining a professional appearance under the hood.
Popular among muscle car, street rod, truck, marine, and restoration enthusiasts, this BBC alternator bracket is an excellent choice for compatible Mark IV, Gen V, and Gen VI Big Block Chevrolet applications requiring a passenger-side GM 10SI alternator mounting solution. The polished finish complements both factory-style restorations and custom performance builds while helping create a clean and organized accessory drive system.
Application-Specific Mounting
Designed around the specified engine and accessory drive layout to help maintain proper alternator positioning and belt alignment.
Durable Billet Aluminum Construction
Manufactured from billet aluminum to provide strength, durability, and reliable alternator support in street, restoration, marine, and performance applications.
Polished Engine Bay Appearance
The polished finish enhances engine compartment appearance and complements restoration, muscle car, street rod, truck, marine, and custom performance builds.
Passenger-Side Alternator Mounting
Positions the alternator on the passenger side of the engine for compatibility with the specified accessory drive layout.
Specs
| Accessory Type | Alternator |
| Alternator Style | GM 10Si |
| Finish | Polished |
| Bracket Type | Upper & Lower |
| Water Pump Style | Long Neck |
| Mounting Position | Passenger Side |
| Upper Mounting | Water Pump & Cylinder Head |
| Lower Mounting | Water Pump |
| Bracket Material | Billet Aluminum |
| Hardware | Included |
Engine Fitment
COMPATIBLE WITH
CHEVROLET BIG BLOCK V8 GEN. II (MARK IV)
• 6.5 L / 396 in3
• 6.6 L / 402 in3
• 7.0 L / 427 in3
• 7.4 L / 454 in3
• 8.2 L / 502 in3
CHEVROLET BIG BLOCK V8 GEN. V
• 7.4 L / 454 in3
• 8.2 L / 502 in3
CHEVROLET BIG BLOCK V8 GEN. VI
• 7.4 L / 454 in3
• 8.2 L / 502 in3
NOTE:
Requires a long water pump.
Passenger-side alternator mounting position.
Requires standard BBC accessory mounting holes in the passenger-side cylinder head.
Designed for GM 10SI-style alternators.
COMMON VEHICLE APPLICATIONS
• Chevrolet Silverado 1500 / 2500 / 3500
• GMC Sierra 1500 / 2500 / 3500
• Chevrolet Tahoe / Suburban
• GMC Yukon / Yukon XL
• Chevrolet Camaro / Corvette (LS equipped)
• Pontiac GTO / G8 (LS equipped)
Q&A
What applications is this bracket compatible with?
This bracket is designed for COMPATIBLE WITH, CHEVROLET BIG BLOCK V8 GEN. II (MARK IV), 6.5 L / 396 in3, 6.6 L / 402 in3, 7.0 L / 427 in3, 7.4 L / 454 in3, 8.2 L / 502 in3, CHEVROLET BIG BLOCK V8 GEN. V, 7.4 L / 454 in3, 8.2 L / 502 in3, CHEVROLET BIG BLOCK V8 GEN. VI, 7.4 L / 454 in3, 8.2 L / 502 in3, NOTE: Fits with long water pump set-up.
Will this bracket fit my setup?
This bracket is intended for Chevy/GM applications and should match your engine accessories and mounting configuration.
What does this bracket do?
This bracket is used to mount and secure engine accessories such as alternators, power steering pumps, or other components.
What material is this bracket made from?
This bracket is made from steel, providing strength and durability.
What finish does this bracket have?
This bracket features a black finish, which enhances appearance and corrosion resistance.
Do I need to align accessories when installing this bracket?
Yes, proper alignment is critical to ensure correct belt tracking and accessory operation.
Do I need hardware for installation?
You may need bolts or spacers depending on your setup.
Will this bracket work with aftermarket accessories?
Yes, many brackets are designed to support aftermarket and performance accessory setups when properly matched.
Is this a good upgrade over stock brackets?
Yes, aftermarket brackets can improve fitment, durability, and engine bay appearance.
Do I need to verify compatibility before installation?
Yes, brackets must match your engine, accessories, and belt system for proper fitment.
Can this bracket be used in performance or custom builds?
Yes, brackets are commonly used in performance and custom engine builds.
Is this a BBC alternator bracket?
Yes. BBC is a common abbreviation for Big Block Chevy, and this bracket is designed for compatible Big Block Chevrolet applications listed in the fitment section.
Does this bracket require a long water pump?
Yes. This bracket is specifically designed for Big Block Chevrolet engines equipped with a long water pump configuration and may not align correctly with short water pump applications.
Which alternator style is this bracket designed for?
This bracket is designed for GM 10SI alternator applications. Verify your alternator model and accessory drive configuration before installation.
What makes this an upgraded alternator bracket?
This bracket features an upgraded upper and lower mounting design that provides secure alternator support while helping maintain proper alignment within compatible accessory drive systems.
What material is this alternator bracket made from?
This bracket is precision-machined from billet aluminum and features a polished finish for durability and enhanced engine bay appearance.
Emissions Notice
This product does not affect vehicle emissions and is not subject to emissions compliance regulations.
Chevy Big Block Long Water Pump Upgraded Alternator Bracket - Polished
Upgrade your accessory drive system with this Chevy Big Block Long Water Pump Upgraded Alternator Bracket featuring a polished finish and precision-machined billet aluminum construction. Designed for compatible Big Block Chevrolet engines equipped with a long water pump, this bracket provides secure alternator mounting while creating a cleaner, more organized accessory drive layout and engine bay appearance.
This Big Block Chevy alternator bracket is engineered for GM 10SI alternator applications and helps maintain proper alternator positioning and belt alignment during street driving, restoration projects, marine applications, and performance builds. The upgraded upper and lower bracket design provides increased mounting support while integrating with compatible Big Block Chevrolet accessory drive layouts.
Whether you're replacing worn alternator mounting hardware on a 396, 402, 427, 454, or 502 Big Block Chevy engine, or completing a fresh engine build, this long water pump alternator bracket delivers dependable performance and polished billet styling. Its precision-machined billet aluminum construction is designed to withstand engine vibration and normal accessory drive loads while maintaining a professional appearance under the hood.
Popular among muscle car, street rod, truck, marine, and restoration enthusiasts, this BBC alternator bracket is an excellent choice for compatible Mark IV, Gen V, and Gen VI Big Block Chevrolet applications requiring a passenger-side GM 10SI alternator mounting solution. The polished finish complements both factory-style restorations and custom performance builds while helping create a clean and organized accessory drive system.
Application-Specific Mounting
Designed around the specified engine and accessory drive layout to help maintain proper alternator positioning and belt alignment.
Durable Billet Aluminum Construction
Manufactured from billet aluminum to provide strength, durability, and reliable alternator support in street, restoration, marine, and performance applications.
Polished Engine Bay Appearance
The polished finish enhances engine compartment appearance and complements restoration, muscle car, street rod, truck, marine, and custom performance builds.
Passenger-Side Alternator Mounting
Positions the alternator on the passenger side of the engine for compatibility with the specified accessory drive layout.
COMPATIBLE WITH
CHEVROLET BIG BLOCK V8 GEN. II (MARK IV)
• 6.5 L / 396 in3
• 6.6 L / 402 in3
• 7.0 L / 427 in3
• 7.4 L / 454 in3
• 8.2 L / 502 in3
CHEVROLET BIG BLOCK V8 GEN. V
• 7.4 L / 454 in3
• 8.2 L / 502 in3
CHEVROLET BIG BLOCK V8 GEN. VI
• 7.4 L / 454 in3
• 8.2 L / 502 in3
NOTE:
Requires a long water pump.
Passenger-side alternator mounting position.
Requires standard BBC accessory mounting holes in the passenger-side cylinder head.
Designed for GM 10SI-style alternators.
COMMON VEHICLE APPLICATIONS
• Chevrolet Silverado 1500 / 2500 / 3500
• GMC Sierra 1500 / 2500 / 3500
• Chevrolet Tahoe / Suburban
• GMC Yukon / Yukon XL
• Chevrolet Camaro / Corvette (LS equipped)
• Pontiac GTO / G8 (LS equipped)
SPECIFICATIONS
Accessory Type: Alternator
Alternator Style: GM 10Si
Finish: Polished
Bracket Type: Upper & Lower
Water Pump Style: Long Neck
Mounting Position: Passenger Side
Upper Mounting: Water Pump & Cylinder Head
Lower Mounting: Water Pump
Bracket Material: Billet Aluminum
Hardware: Included