Spectre Performance® - Airbox System
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Spectre Performance® 728

Airbox System
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Under hood hot air can heat soak the air going into your engine and rob your engine of horsepower. For this reason, Spectre has engineered these universal air intake systems for classic V6/V8 muscle car/pickup models with a GM throttle body injection assembly or carburetor with a 5-1/8 inch neck. These air intake systems use a low profile, 14 by 3 inch tall round air filter housing with dual inlets and a set of two flexible air intake ducts. To help block the hot under hood air the air filter housing has two tubes that can be routed to a location that will provide cooler outside air. In addition, we offer multiple angles of separation between the air filter housing inlets to allow for multiple configurations. Full overview
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Product details

Since 1983 Spectre has designed and offered unique and innovative parts and components to fuel your car or truck obsession. Our products are designed and tested to perform and last. We have a state of the art chassis dynamometer with diagnostic and emissions testing and performance optimizing capabilities, as well as a top of the line Super-Flow flow bench with airflow, pressure, and velocity measuring capabilities in both intake and exhaust modes, and also a whole bunch of expensive scientific laboratory type equipment, all of which are used to develop Quality Products that Perform. From humble beginnings in a two car garage, to setting world records and becoming the first wheel driven, gasoline powered car to run over 400 mph.
  • SKU: 728
  • UPC: 089601072807
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Item Details

air box included Yes
intake pipe material High-Density Cross-Linked Polyethylene
inside diameter 11.625 in
weight 10.4 lb (4.7 kg)
replacement filter HPR8699
prop 65 yes/no Yes
prop 65 (c, r or cr) CR
package type Box
package material Paperboard
oil included Yes
mounting hardware included Yes
mass air flow sensor adapter included No Mass Air Flow Sensor Adapter Required
intake pipe color / finish Black
air filter color Red
couplers included 2
coupler color/finish Black
clamps included 4
clamp style Worm Gear
clamp material Stainless Steel
clamp color/finish Polished / Chrome
air filter washable Yes
air filter outlet width 11.625 in (295 mm)
air filter outlet shape Round
air filter material Non-woven Synthetic
air filter height 3 in (76 mm)
clamps number 2 clamps

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