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Top Street Performance

Chrome Volkswagen Beetle Bosch Style 55 Amp Alternator

Chrome Volkswagen Beetle Bosch Style 55 Amp Alternator

SKU: SKU: ES1050C

Regular price $190.12
Sale price $190.12 Regular price $216.05
Shipping calculated at checkout.

In stock

Top Street Performance (TSP) is committed to providing high-quality performance parts while complying with emissions regulations. This product is designed for use on vehicles that comply with federal emissions regulations. It is the customer’s responsibility to verify that this part is legal for use in their state or local jurisdiction. Check with your local emissions authority before purchasing.

Product Details

Features

  • 55 Amp Charging Output: Provides dependable charging power for air-cooled Volkswagen applications.
  • One-Wire Capable Design: Supports simplified wiring for Beetles, dune buggies, and custom builds
  • Internal Voltage Regulator: Helps maintain stable charging system performance without an external regulator.
  • Bosch-Style Alternator: Designed for compatible Volkswagen air-cooled engine applications.

Description

Upgrade your Volkswagen Beetle charging system with this Bosch-style 55 amp alternator designed for dependable performance in air-cooled Volkswagen applications. Whether you're restoring a classic Beetle, upgrading a Super Beetle, building a Baja Bug, assembling a dune buggy, or finishing a custom sand rail project, this alternator delivers reliable charging power while maintaining a clean chrome appearance.

The 55 amp output provides the charging capacity needed to support upgraded ignition systems, electric fuel pumps, auxiliary lighting, audio equipment, and other common electrical accessories found on modernized Volkswagen builds. Increased charging performance helps maintain consistent system voltage for improved reliability during daily driving, cruising, and off-road use.

Designed for compatible Volkswagen air-cooled Flat 4 engines, this alternator fits many 1.1L, 1.2L, 1.3L, 1.5L, 1.6L, 1.7L, 1.8L, 1.9L, 2.0L, and 2.1L engine combinations. It is commonly used on Volkswagen Beetle, Super Beetle, Karmann Ghia, Thing, Baja Bug, dune buggy, sand rail, and other Type 1-based custom vehicle applications.

The internally regulated design eliminates the need for an external voltage regulator while helping maintain stable charging system performance. Its one-wire capable configuration simplifies installation, making it a popular choice for restoration projects, engine conversions, off-road vehicles, and custom Volkswagen builds where clean wiring and dependable operation are important.

Constructed with a durable aluminum housing and finished in bright chrome, this alternator combines classic appearance with modern charging capability. Whether you're replacing a worn factory alternator, upgrading a 12-volt charging system, building a custom VW project, or improving charging performance for additional electrical accessories, this Bosch-style alternator delivers the reliability and performance needed for dependable operation.

 

Reliable Charging Performance
The 55 amp output provides the charging capacity needed for upgraded ignition systems, lighting upgrades, electric fuel pumps, audio equipment, and other electrical accessories commonly found on air-cooled Volkswagen vehicles. Consistent charging performance helps maintain stable system voltage under varying driving conditions.

Volkswagen Air-Cooled Compatibility
Designed for compatible Volkswagen air-cooled Flat 4 engines from 1.1L through 2.1L displacement. Common applications include Beetle, Super Beetle, Karmann Ghia, Thing, Baja Bug, dune buggy, sand rail, and Type 1-based custom vehicles.

Simplified Installation
The internally regulated, one-wire capable design helps reduce wiring complexity while maintaining dependable charging system performance. Popular for restoration projects, custom VW builds, engine conversions, and off-road applications.

Specs

AC Service TapNo
Amperage Rating55 A
BrushlessNo
Case Circumference14.140 in.
Case ColorSilver
Case MaterialAluminum
External Fan IncludedNo
External Regulator IncludedNo
FamilyCylindrical
Fan TypeExternal
FinishChrome
Ground TypeCase ground
Mounting TypeStrap
One Wire CapableYes
Plug Clock Rear View Main Mounting Ear at 6 O Clock12 o'clock
Plug Type1-pin
Pulley Belt TypeV-belt
Pulley IncludedNo
Regulator TypeInternal
Rotation DirectionClockwise
Terminal Quantity2
Voltage12 VDC

Engine Fitment

COMPATIBLE WITH:
VOLKSWAGEN AIR-COOLED FLAT 4
• 1.1 L / 1,131 cc in3
• 1.2 L / 1,192 cc in3
• 1.3 L / 1,285 cc in3
• 1.5 L / 1,457 cc in3
• 1.5 L / 1,493 cc in3
• 1.6 L / 1,584 cc in3
• 1.7 L / 1,679 cc in3
• 1.8 L / 1,795 cc in3
• 1.9 L / 1,915 cc in3
• 2.0 L / 1,970 cc in3
• 2.1 L / 2,109 cc in3

Designed to fit 1.6 L 1975-1979 Beetles and Vanagons but will work with most 40 HP or larger engine.

COMMON VEHICLE APPLICATIONS:
Air-cooled Volkswagen Beetle, Karmann Ghia, Thing, and compatible Type 1-based applications using Bosch-style alternator/generator-stand mounting and matching pulley alignment.

NOTES:
Verify Bosch-style alternator stand compatibility, pulley alignment, cooling fan fitment, and wiring requirements before ordering.

Q&A

What applications is this alternator compatible with?
This alternator is designed for compatible applications including VOLKSWAGEN AIR-COOLED FLAT 4.


Will this alternator fit the applications listed in the fitment details?
Yes, this alternator is designed around the compatible applications shown in the fitment section for this product.


Is this alternator a good upgrade over a stock charging system?
Yes, this alternator is a strong upgrade for compatible applications that need reliable charging performance and support for modern electrical demands.


What voltage system is this alternator designed for?
This alternator is built for a 12 vdc charging system.


What type of regulator does this alternator use?
This alternator uses a internal regulator setup, which helps control charging output for the intended application.


Is this alternator easy to wire into a compatible vehicle?
Wiring should always be matched to the intended application, but this alternator is designed for straightforward installation on compatible setups.


Does alternator rotation matter for installation?
Yes, rotation matters for belt-driven accessories, so the alternator should be matched to the correct belt routing and engine setup.


Do I need to verify pulley compatibility before installation?
Yes, pulley style and belt alignment should always be confirmed against your bracket and belt setup before installation.


Does alternator cooling matter on high-demand applications?
Yes, proper alternator cooling is important when electrical demand is higher, especially on performance builds with added accessories.


Should I check bracket and clearance before installation?
Yes, bracket style, case position, and wiring clearance should always be confirmed before installation.


Is mounting style important when choosing an alternator?
Yes, mounting style is critical because the alternator must match the bracket system used on the engine or vehicle.


What is this alternator made from?
It uses a aluminum case, helping support durability and dependable charging performance.


Will this alternator help support added electrical accessories?
Yes, a higher-output alternator can help support added electrical loads such as fans, fuel pumps, ignition upgrades, and lighting when matched to the correct application.


Is this a good upgrade from a stock alternator?
Yes, this alternator is a strong upgrade for compatible applications that need improved charging reliability, support for accessories, and performance-oriented fit and finish.


Does the chrome finish affect performance?
No, the chrome finish is cosmetic and does not change the alternator's performance—it gives it a brighter show-quality appearance.


How do I maintain the chrome finish?
Routine cleaning with non-abrasive products will help keep the chrome finish looking its best over time.

Will this alternator fit a Volkswagen Beetle?
Yes. This alternator is designed for compatible air-cooled Volkswagen applications and is commonly used on Beetle and Super Beetle models equipped with Bosch-style alternator mounting systems.

Can this alternator be used on a dune buggy or sand rail?
Yes. The one-wire capable design and compact Bosch-style configuration make it a popular choice for dune buggies, sand rails, Baja Bugs, and custom Volkswagen-based projects.

Is this a good upgrade for a 12-volt conversion?
Yes. This alternator is designed for 12-volt charging systems and is commonly used when upgrading older Volkswagen electrical systems.

Emissions Notice

This product does not affect vehicle emissions and is not subject to emissions compliance regulations.