The K&N 57-3081 is a 57 Series fuel injection performance kit (FIPK) for the 6.2L V8 in the 2014-2015 Corvette C7. The 6.2L LT1 engine found in the C7 Stingray is certainly no slouch in stock trim, but many owners want a cold air intake for more power. The kit replaces the factory filter and intake tube with a rotationally molded HDPE tube and a red oiled cotton gauze filter that can be washed and reused. The factory intake's restriction is the main thing this kit addresses. Owners on user forums describe the gains as modest, mostly felt in throttle response and intake sound, so buy this for a noticeable refinement and a reusable filter rather than a dramatic jump. Searches for a 2014 Corvette C7 6.2L cold air intake, K&N 57-3081 install, and LT1 washable air filter tend to point to this kit.
The intake tube's oversized, conical filter is the core of the design, and it is paired with a custom heat shield that keeps intake air away from engine bay heat. Installation is a bolt-on job using the factory mounting points. Before you start, the manufacturer's install sheet tells you to disconnect the negative battery cable, which clears stored memories, and to have your radio anti-theft code ready. Owners on user forums say the tube can be tight to seat into the filter housing and throttle body, so go slowly and do not force the fit. Install time reported varies by source, so confirm the expected time with the manufacturer.
Yes. The manufacturer's install sheet for this kit says to turn off the ignition and disconnect the negative battery cable first. Disconnecting the battery erases pre-programmed electronic memories, so record your settings beforehand. Some radios will ask for an anti-theft code after reconnection.
Owners on user forums report that the mass airflow sensor and the factory crankcase vent fittings are moved from the old tube to the new one during installation. The manufacturer's sheet also says to use only the hardware supplied in the kit, and that failing to follow its instructions can void the warranty.
Owners on user forums describe this as a manageable weekend job for someone comfortable with basic hand tools. A 10mm ratchet removes the factory air box, an 8mm nut driver handles the vent hoses and intake tube, and a 7mm nut driver reinstalls the radiator air duct. Do not use the stock T-bolt clamps if the kit supplies its own hardware, and check every connection for tightness. The manufacturer advises periodic checks for alignment, clearance, and tight connections after installation, and the tube should be seated carefully so nothing is strained.
