Description
Part Number: 300-260
Holley SBC 4150 Single Plane EFI Intake Manifold & Fuel Rail Kit
Engineered for high-performance Small Block Chevrolet V8 street and strip applications, delivering maximum airflow and precise fuel distribution from 2,500 to 7,500 RPM.
Key Features
- ☑ High-flow single plane design with isolated plenum to increase charge air density and overall engine output.
- ☑ Standard 4150 square bore throttle body mounting flange compatible with 4150-style throttle body EFI systems.
- ☑ Low-profile casting design featuring a 1″ shorter height than standard single plane manifolds for enhanced bonnet clearance.
- ☑ Back-cut fuel injector bores angled directly to align with runner airflow for optimum fuel atomisation.
- ☑ Includes premium black-coated fuel rails with laser-etched Holley branding and custom mounting bracket assortment.
- ☑ Dual distributor clamp mounting positions to accommodate custom ignition setups.
Technical Specifications
| Brand | Holley |
|---|---|
| Manufacturer Part Number | 300-260 |
| Engine Compatibility | Small Block Chevy (SBC) V8 (262-400 ci, 1957–1986 & 1987–1991 L98 Corvette Heads) |
| Flange Style | 4150 Square Bore Throttle Body |
| Manifold Type | Single Plane High-Rise EFI |
| RPM Powerband | 2,500 – 7,500 RPM |
| Material & Finish | Cast Aluminium / Satin Finish |
| Manifold Height | Front: 4.18″ | Rear: 5.28″ |
| Port Dimensions | 1.92″ Height x 1.20″ Width |
What’s Included in the Box
- 1 x Holley Single Plane 4150 EFI Intake Manifold (Satin Cast)
- 2 x Anodised Black Fuel Rails with Laser-Etched Holley Logos
- 1 x Fuel Rail Mounting Bracket & Hardware Assortment
Holley has been the undisputed leader in fuel systems for over a century, delivering world-class performance and proven dependability on the track and road. When you order your Holley performance components from JP Racing, you benefit from our dedicated UK motorsport technical expertise, rapid dispatch, and reliable UK stock holding.


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