Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Holley

Holley LS Engine Swap Accessory Drive Systems 21-4 Bracket Spacer Kits, Aluminum, Natural, Long, Chevy, Small Block LS, Each

SKU: HLY21-4

Engine Accessory Bracket Components
Holley LS Engine Swap Accessory Drive Systems 21-4 Bracket Spacer Kits, Aluminum, Natural, Long, Chevy, Small Block LS, Each

Holley

Holley LS Engine Swap Accessory Drive Systems 21-4 Bracket Spacer Kits, Aluminum, Natural, Long, Chevy, Small Block LS, Each

SKU: HLY21-4

Engine Accessory Bracket Components
A$306.23
LAST ONE! Est Ship 4-7 days. LAST ONE! This is the last unit at our distribution centre. Contact us if you need more. The ETA is the approximate time required to prepare your order for dispatch.
View cart 0
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

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

Installation Kit For LS Low Accessory Drive Brkt

Data: v4.2 - Upd: 2026-10-18 03:43:49

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
21-4
Product Attributes - Part Type
Engine Accessory Bracket Components
Product Attributes - Product Line
Holley LS Engine Swap Accessory Drive Systems
Product Attributes - UPC
090127739754
Product Attributes - Engine Accessory Bracket Component Type
Installation kit
Product Attributes - Quantity
Sold as a kit.

Reference Information

Brand Name/s Holley
StreetFX SKU hly21-4
SFX Item ID 4782219
Supplier Item Code 4782219
Manufacturer SKU 21-4
Manufacturer UPC 90127739754
Alternative References HOL21-4

Compatibility

Application Data
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    Beginning Year1975
    Ending Year1986
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Application NotesFor use with LS engine swaps.
  • UniversalNo
    MakeCHEVROLET
    ModelC10 PICKUP
    Beginning Year1973
    Ending Year1974
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)

Loading compatibility information...

Keep shopping

More from Holley