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High output fuel flow for continuous high rpm operation.
| Fit Type | Vehicle Specific Fit |
| Compatible with Vehicle Type | Big Block Chevy V8s |
| Part Interchange Info | 12-454-11 |
| Auto Part Position | Unknown |
| Outlet Connection Type | Threaded |
| Inlet Connection Type | Screw-in style, 5/16"thread, AC Delco style |
| Gas Type | Gasoline |
| Mounting Type | Vehicle Specific Mount |
| Operation Mode | Mechanical |
| Product Grade | New |
| Material Type | Aluminum |
| Body Material | Metal |
| Specification Met | NPT, unspecified industry standards |
| Product Style | Gerotor |
| Item Dimensions | 5.7 x 4.4 x 4.2 inches (14.5 x 11.2 x 10.7 cm) |
| Item Weight | 1.5 Pounds (680 grams) |
| Outlet Connection Size | 0.38 Inches (1 cm) |
| Inlet Connection Size | 0.31 Inches (0.8 cm) |
| Brand Name | Holley |
| Manufacturer Part Number | 12-454-11 |
| Global Trade Identification Number | 00090127484098 |
| Manufacturer | Holley |
| UPC | 090127484098 |
| Included Components | Per Item Description |
| Unit Count | 1.0 Count |
| Brand | Holley |
| Vehicle Service Type | Big Block Chevy V8s |
| Item dimensions L x W x H | 5.7 x 4.4 x 4.2 inches (14.5 x 11.2 x 10.7 cm) |
| Material | Aluminum |
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Ideal for classic car restorations needing high-performance fuel delivery with reliability and vintage styling.
Perfect for modified engines that require consistent and ample fuel supply for optimal performance.
Great for home mechanics looking for an affordable, easy-to-install solution for their fuel system needs.
Not suitable for modern fuel-injected systems that require electric pumps for proper fuel delivery.
Holley 12-454-11 110 GPH Mechanical Fuel Pump
The Holley Mechanical Fuel Pump for GM BB has received overwhelmingly negative feedback from customers, highlighting major concerns about its reliability and quality. Users have reported significant issues such as leaking fuel from the diaphragm shortly after installation, with some experiencing catastrophic failures within just a few hours of use. Complaints indicate that the diaphragm is subpar, resulting in multiple instances where fuel could potentially leak onto hot engine components, posing serious safety risks. Overall, customers have expressed disappointment, labeling the pump as "junk" and a "waste of money," with several reviewers recommending alternatives like Carter. The predominant sentiment revolves around a lack of trust in the product's durability and safety, leading many to advise potential buyers to steer clear. ###
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