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Vehicle Info NeededVacuum Pump Rebuild Kit For Original Design Pumps
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Lowest Price Guarantee- Vacuum Pump Rebuild Kit
- For Original Design Pumps
Vacuum Pump Rebuild Kit, Inc Shaft Pressed on to Hub, Front Seal, Two Roller Bearings, Two Set Screws• Rebuild Kit, Original Design Pumps
Vacuum Pumps to Improve Your Vehicle's Performance
The nature of a vacuum pump is to remove air, blow-by gases, and other contaminants from the crankcase of an engine. The vacuum pump's ability to remove the air in the crankcase results in overall engine vacuum. The vacuum will increase horsepower by allowing the use of low-tension compression and oil rings. Whether you have a normally-aspirated small block or nitrous-equipped pro-mod, Moroso offers "purpose-built" racing vacuum pumps with all of the advantages you need to reduce frictional horsepower losses, blow-by, intake charge contamination and aid in detonation prevention.
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Original Design Vacuum Pump:
- 3 or 4-vane pump
- Billet aluminum housing
- Pulls much more vacuum than stock smog pumps
- Special vane material for improved seal and wear
- -12 AN inlet/outlet fittings won't leak
- Rebuildable in 15 minutes
- Mounting bracket sold separately
Enhanced Design Vacuum Pump:
- 3 or 4-vane pump
- Wet or Dry Sump usage
- Anodized or natural exterior
- Pulls 13.9% more vacuum and does so sooner
- Sealed, maintenance-free bearings
- -12 AN fittings included
Pro Mod Style Vacuum Pump:
- 4-vane pump
- Achieves much greater vacuum sooner
- Flows up to 150% more than the original design
- Capable of up to 26 inches of vacuum
- The rotor is keyed to the shaft, eliminating fastener failure
- The pump weighs 7 lbs, 8 oz (with bracket and fittings)
- Sealed, maintenance-free bearings
- Billet bracket and -16AN beaded fittings included (bracket mounts to the motor plate & rotates 360°)
Boost your engine’s performance and reliability with Moroso Racing Vacuum Pumps & Accessories — engineered for serious racers and high-performance builds. These systems are designed to reduce crankcase pressure, improve ring seal, limit blow-by, and keep oil where it belongs, resulting in sharper throttle response and measurable horsepower gains.
Moroso vacuum pump systems are built with durability in mind, using billet aluminum housings, robust vane construction, and premium fittings to deliver consistent vacuum control under demanding conditions. By improving the seal between piston rings and cylinder walls, these pumps maximize combustion efficiency while helping reduce oil contamination and misting.
If you’re building a modern swap or performance engine, the ls vacuum pump kit option ensures compatibility and ease of installation with LS-based platforms. Moroso also offers a wide range of brackets, pulleys, and drive kits so you can tailor the system to your setup — whether it’s a drag car, street machine, or boosted application.
At the core of every racing vacuum pump in this lineup is the ability to withstand high RPM use while delivering steady, reliable vacuum. The results are clear: reduced crankcase pressure, cleaner intake charge, and improved engine longevity.
In short, Moroso Racing Vacuum Pumps & Accessories provide a competitive edge while protecting vital components. If you’re looking for proven technology trusted by racers worldwide, this lineup is a smart upgrade for any performance build. Install one and experience the difference in power, response, and dependability.
