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Holley LS Engine Swap Accessory Drive Systems 20-137BK Systems, Swap, Serpentine, Black, Air Conditioning Pulley, Compressor, Tensioner, Chevy, LS, 4.8-7.0L, Kit

SKU: HLY20-137BK

Accessory Drive Systems

Holley LS Engine Swap Accessory Drive Systems 20-137BK Systems, Swap, Serpentine, Black, Air Conditioning Pulley, Compressor, Tensioner, Chevy, LS, 4.8-7.0L, Kit

SKU: HLY20-137BK

Accessory Drive Systems
A$4,948.72
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
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Description

Now available from Holley are LS engine swap accessory drive systems. Included are accessories and pulleys that are manufactured by OEM part suppliers for durability and direct bolt-on installation. Order the kit that's best suited for your vehicle and engine application.

Features and facts:

* Universal brackets fit virtually all common LS engines, regardless of water pump and harmonic balancer offsets--thus reducing cost and complexity compared with competitive products
* Simple, dedicated installation kits allow easy fitment to Corvette, F-Body, or truck drive offsets
* Accessories, tensioner, and pulleys are manufactured by OEM suppliers and many of the parts are used on production vehicles today

Part Type

Accessory Drive Systems

Data: v4.2 - Upd: 2026-10-17 03:06:44

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
20-137BK
Product Attributes - Part Type
Accessory Drive Systems
Product Attributes - Product Line
Holley LS Engine Swap Accessory Drive Systems
Product Attributes - UPC
090127055205
Product Attributes - Pulley Style
Serpentine
Product Attributes - Crankshaft Pulley Included
No
Product Attributes - Water Pump Pulley Included
No
Product Attributes - Power Steering Pump Style
GM Type 2
Product Attributes - Power Steering Pump Color
Natural
Product Attributes - Power Steering Pump Reservoir Included
No
Product Attributes - Power Steering Pulley Included
Yes
Product Attributes - Power Steering Pulley Material
Steel
Product Attributes - Power Steering Pulley Color
Black
Product Attributes - Power Steering Pulley Attachment
Press fit
Product Attributes - Power Steering Pulley Grooves
6-groove, serpentine
Product Attributes - Power Steering Brackets Included
Yes
Product Attributes - Power Steering Bracket Material
Aluminum
Product Attributes - Power Steering Bracket Color
Black
Product Attributes - Alternator Material
Cast aluminum
Product Attributes - Alternator Color
Black
Product Attributes - Alternator Amperage
130
Product Attributes - Alternator Style
1-wire
Product Attributes - Alternator Pulley Included
Yes
Product Attributes - Alternator Pulley Material
Steel
Product Attributes - Alternator Pulley Color
Black
Product Attributes - Alternator Pulley Grooves
6-groove, serpentine
Product Attributes - Alternator Fan Included
No
Product Attributes - Alternator Brackets Included
Yes
Product Attributes - Alternator Bracket Material
Aluminum
Product Attributes - Alternator Bracket Color
Black
Product Attributes - Air Conditioning Compressor Type
SD508
Product Attributes - Air Conditioning Compressor Color
Black
Product Attributes - Air Conditioning Pulley Included
Yes
Product Attributes - Air Conditioning Pulley Material
Steel
Product Attributes - Air Conditioning Pulley Color
Black
Product Attributes - Air Conditioning Pulley Grooves
6-groove, serpentine
Product Attributes - Air Conditioning Bracket Included
Yes
Product Attributes - Air Conditioning Bracket Material
Aluminum
Product Attributes - Air Conditioning Bracket Color
Black
Product Attributes - Idler Included
Yes
Product Attributes - Idler Pulley Color
Black
Product Attributes - Idler Brackets Included
Yes
Product Attributes - Tensioner Included
Yes
Product Attributes - Tensioner Style
Spring-loaded
Product Attributes - Tensioner Pulley Color
Natural
Product Attributes - Tensioner Cover Included
No
Product Attributes - Hardware Included
Yes
Product Attributes - Belt Included
Yes
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
High mount accessory drive style. Requires an application specific installation kit, sold separately.

Reference Information

Brand Name/s Holley
StreetFX SKU hly20-137BK
SFX Item ID 4783859
Supplier Item Code 4783859
Manufacturer SKU 20-137BK
Manufacturer UPC 90127055205
Alternative References HOL20-137BK, 4.8-7.0L

Compatibility

Application Data
  • UniversalYes
    MakeCHEVROLET
    Beginning Year1997
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.7L/350
  • UniversalYes
    MakeCHEVROLET
    Beginning Year1999
    Ending Year2014
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.3L/325
  • UniversalYes
    MakeCHEVROLET
    Beginning Year1999
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size4.8L/294
  • UniversalYes
    MakeCHEVROLET
    Beginning Year1999
    Ending Year2019
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
  • UniversalYes
    MakeCHEVROLET
    Beginning Year2006
    Ending Year2015
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size7.0L/427
  • UniversalYes
    MakeCHEVROLET
    Beginning Year2008
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
  • UniversalYes
    MakeCHEVROLET
    Beginning Year2014
    Ending Year2022
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size5.3L/325
  • UniversalYes
    MakeCHEVROLET
    Beginning Year2014
    Ending Year2022
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.2L/376

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