The K&N 69-5309TS is a Typhoon cold air intake for the 2.0L turbocharged four-cylinder in 2011–2013 Hyundai Sonata and Kia Optima models. It replaces the factory airbox and intake tube with a mandrel-bent aluminum tube in a silver powder-coated finish that feeds air directly to the turbo inlet. The kit includes a red oiled cotton gauze high-flow filter and a heat shield that sits in the original airbox space to keep hot engine-bay air away from the filter.
The manufacturer's dyno testing estimates a gain of 7.63 HP at 4,861 RPM, so buyers should treat that as an estimate rather than a guarantee, since results depend on the car and other modifications. The filter is washable and reusable, which means you aren't repeatedly buying disposable paper elements to keep the intake flowing. Shoppers searching for a 2.0T Sonata cold air intake, an Optima 2.0 turbo intake upgrade, or a K&N 69 Series Typhoon kit will find this is the matching application. The tube's hose fittings are built around the stock blow-off valve, EVAP, and vent lines, so the install does not require re-plumbing the engine bay.
The manufacturer states the intake tube provides fittings for the existing blow-off valve, EVAP, and vent hoses, so those lines reconnect to the new tube.
The manufacturer recommends that customers do not discard the factory air intake, so store it in case you ever need to return the car to stock.
The manufacturer's listing names 2011–2013 Sonata and Optima 2.0L turbo models, while other manufacturer materials also reference 2014. Confirm your exact year and trim with the manufacturer before ordering.
This is a moderate DIY job that uses common hand tools: a ratchet with extension, 10mm and 5/16" sockets, a 4mm Allen wrench, flat and Phillips screwdrivers, and pliers. Per the manufacturer's install sheet, start by disconnecting the negative battery cable, and note that doing so erases stored memory settings, so write them down first. Next, remove the fresh-air scoop and airbox, disconnect the blow-off valve, EVAP, and crankcase vent hoses, and loosen the clamp at the turbo inlet, which is the hardest spot to reach. The spring clamps are single-use, and the instructions say not to fully tighten the heat shield or hose clamps until everything is aligned. Use only the provided hardware, because the manufacturer warns that mismatched parts can damage the intake tube, throttle body, or engine. Budget an afternoon rather than a quick swap.
