Holley Accessory Drive Kit GM LS Engines 20-137
This Holley LS accessory drive kit from Holley is a 6-rib serpentine kit for GM LS engines, part number 20-137. See the full description below for specifications and fitment details.
See all accessory drives and pulleys. Ships for a flat $75 to any US state (shipping policy).
Pulley Kit – 6 Rib Serpentine – Aluminum – Natural – GM LS-Series – Kit – MPN: 20-137
Holley 20-137 High-Mount reference
Holley identifies part 20-137 as a High-Mount accessory drive system. Check accessory positions, belt routing and required additional parts using Holley’s 20-137 product details and installation resources before ordering.
Compare accessory layouts with the Holley 20-185 Mid-Mount system, and confirm fitment for your engine and engine bay.
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