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Additonal Info On This Product:
- All aluminum construction saves 3.8lbs. over original models (28% weight savings)
- Gray anodized finish with black anodized billet aluminum metering block and booster inserts
- Designed for use on Marine high horsepower engines
- Fully machined from venturi throat to throttle bore for predictable & repeatable performance
- Integrated idle bypass valve allows for adjustment of idle while maintaining correct throttle plate to transfer slot relationship
- 12 hole billet booster inserts for superior atomization and crisp throttle response
- Metering blocks feature improved durability, true gasket sealing and fully adjustable (emulsion bleeds, power valve channel restrictors & idle feed restrictors)
- Dual 50cc accelerator pumps provide the perfect amount of fuel from idle to full throttle
- Fuel bowls provide 20% more fuel capacity while controlling slosh with internal baffling
- Clear sight windows on both sides of bowls for easy and safe fuel level adjustments
- Built in drain plug in front center of bowl provides easy access to empty contents of bowl
- 8 (o-ringed) inlet threads offer a large variety of plumbing options and can be plumbed from either side
- Factory ready TPS mounting points for use with data acquisition systems
- Knurled (hand adjustable) primary and secondary curb idle screws allow for easy idle adjustment without the use of tools
- Contoured hex head squirter screws for streamlined airflow
- Fully adjustable stainless steel external linkage can be adjusted for 1:1 progressive, or soft progressive throttle activation. No linkage parts under the carburetor
- 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
- J-Style vent tubes
Specifications On This Product:
| Barrels | 4 |
|---|---|
| Billet Color | Hard Core Gray with Black |
| Booster | Annular |
| Brand | Holley |
| CFM | 1050 |
| Choke | None |
| Circuit | 3 |
| Emission Code | 3 |
| Finish | Hard Core Gray |
| Fuel | Gasoline |
| Fuel Inlet | Dual |
| Idle Air Bleed Size | 65 |
| Marine Engine Size | Universal |
| Material | Aluminum |
| Model | 4500 |
| Needle and Seat Size | 120;120 |
| Primary Main Jet | 84 |
| Primary Power Valve | 6.5 |
| Primary Pump Nozzle Size | 35 |
| Product Type | Carburetor |
| Secondaries | Mechanical |
| Secondary Main Jet | 84 |
| Secondary Pump Nozzle Size | 35 |
| Supercharged Application | No |
| Throttle Bore | 2.000 inch |
| Venturii Size | 1.690 inch |
| Part Number | 0-80903HBM |
Installation Instructions
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