Holley LS 2x4 Dual Plane Fuel Injected Intake Manifolds 300-121BK Manifolds, 2x4, Throttle Body, Flange, 1,500-7,000 RPM Range, Aluminum, Black Finish, Chevy, 4.8-6.0L, Cathedral Head, Each
Holley LS 2x4 Dual Plane Fuel Injected Intake Manifolds 300-121BK Manifolds, 2x4, Throttle Body, Flange, 1,500-7,000 RPM Range, Aluminum, Black Finish, Chevy, 4.8-6.0L, Cathedral Head, Each
A$2,153.08
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Description
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:15:21
Features
Note for Australian and European Markets
Unless otherwise stated, this product may be engineered for use in Left-Hand Drive vehicles. Steering components, pedals, shifters, linkages, wing mirrors, instrument clusters, panhard rods/traction bars, drag links, brake boosters, brake or clutch lines, accelerator cables, heater cores, some master cylinders and adjacent parts can vary between LHD and RHD configurations. In some models compenents such as windscreen wiper arms, motors and linkages could differ in their size and orientation. Items such as floor mats & dash mats may have differences in their structure around the front row (or padding in different locations). In many cases items are identical depending on the design of the vehicle and part, but may have differing mounts, lengths or bolt patterns. Carefully review the product images and details to ensure suitability for your vehicle, or contact StreetFX support if you are unsure. Returns are not accepted for special order products.
(keyword: manifolds)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 | hly300-121BK |
| SFX Item ID | 4782560 |
| Accounting SKU | hly-300-121BK |
| Manufacturer SKU | 300-121BK |
| Manufacturer UPC | N/A |
| Alternative References | 300-121BK, HLY-300-121BK, HOL300-121BK |
Intake Manifolds, LS 2x4, Throttle Body, Dual Flange, 1,500-7,000 RPM Range, Aluminum, Black Finish, Chevy, 4.8-6.0L, Cathedral Head, Each
Holley LS 2x4 dual plane fuel injection intake manifolds allow you to install dual throttle bodies on your late model LS Series engines. Their dual plane, equal-distribution layout produces great midrange torque without compromising top-end power. The manifolds feature all cast aluminum construction, a wide 1,500 to 7,000 rpm power band range, and can accept dual inline mounted 1,000 cfm throttle bodies with a 1.750 in. maximum throttle bore diameter.
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 300-121BK |
| Part Type | Intake Manifolds, Fuel Injected |
| Product Line | Holley LS 2x4 Dual Plane Fuel Injected Intake Manifolds |
| UPC | 090127715857 |
| Cylinder Head Configuration | Cathedral Port LS1/LS2/LS6 |
| Fuel Injection Style | Throttle body |
| Basic Operating RPM Range | 1,500-7,000 |
| Intake Section Included | Complete |
| Engine Block Deck Height | Standard deck |
| Injectors Included | No |
| Multi-Port Fuel Rails Included | Yes |
| EGR | No |
| Aftermarket Fuel Rail Required | Yes |
| Throttle Body Included | No |
| Supplemental Bosses Cast-In | No |
| Supplemental Bosses Machined | Yes |
| Supplemental Boss Quantity | Eight |
| Runners Included | No |
| Runners Removable | No |
| Plenum Material | Aluminum |
| Plenum Finish | Black ceramic |
| Base Material | Aluminum |
| Base Color | Black ceramic |
| Remanufactured | No |
| Quantity | Sold individually. |
| Special Attention | With cathedral port heads only. |
Compatibility
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