Street. Track. Everything between.
07 3276 7829
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Holley Plenum O-Ring Cords 508-21 Gaskets, Cord, 4.5 ft. Long, 3/32 in. Diameter, Hi-Ram, Chevy, LS, Each

SKU: HLY508-21

Intake Manifold Gaskets

Holley Plenum O-Ring Cords 508-21 Gaskets, Cord, 4.5 ft. Long, 3/32 in. Diameter, Hi-Ram, Chevy, LS, Each

SKU: HLY508-21

Intake Manifold Gaskets
A$78.79
IN STOCK! Est Ship 3-7 Days days. In stock at 2 locations (more than 10 available)

Added to cart

We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Plenum Gasket - Holley Hi-Ram Top Plenum - GM LS-Series - Each


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:16:24

Data: v4.2 - Upd: 2026-11-09 19:41:48

Features

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

(keyword: ring)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Holley, Hilborn, Holley Efi, Retrobright, Terminator X
StreetFX SKU hly508-21
SFX Item ID 4783516
Accounting SKU hly-508-21
Manufacturer SKU 508-21
Manufacturer UPC 090127681831
Alternative References 508-21, HLY-508-21, HOL508-21

Gaskets, Plenum O-Ring Cord, 4.5 ft. Long, 3/32 in. Diameter, Hi-Ram, Chevy, LS, Each

Holley offers all of the components that you need to service your intake manifold. Their plenum O-ring cords are constructed from top-quality Viton® and allow you to cut and glue the O-ring size you need.

Product Attributes
BrandHolley
Manufacturer's Part Number508-21
Part TypeIntake Manifold Gaskets
Product LineHolley Plenum O-Ring Cords
UPC090127681831
Thickness (in.)0.094
Port StyleHolley Hi-Ram
Upper Intake Manifold Plenum Gasket IncludedYes
QuantitySold individually.
NotesIncludes 4.5 ft. of O-ring cord.

Compatibility

Loading compatibility information...