The K&N 77-9042KP is a 77 Series cold air intake for the 3.4/3.5L i-FORCE twin-turbo V6 in the Toyota Tundra. It pairs a mandrel-bent aluminum intake tube with a red, oiled cotton-gauze filter, plus a heat shield that keeps the filter out of hot engine-bay air. The manufacturer estimates a gain of 18.4 HP at 5200 RPM and 17.9 lb-ft of torque on its dyno testing. Owners on user forums are divided on how much seat-of-the-pants difference it makes, but many describe a clear change in intake sound. The main reason to choose it over a disposable-filter kit is the washable, reusable filter, which the manufacturer rates for about 100,000 miles between cleanings under normal highway driving.
This kit replaces the factory air filter, upper housings and intake tubes, and it reuses the stock mass airflow sensors, which are moved into the K&N tubes with the included hardware. Installation is a hand-tool job. The manufacturer's install sheet lists a typical time of about an hour, and it calls for basic sockets, hex keys, and screwdrivers. Following the sheet's steps and using only the supplied hardware matters, because the manufacturer warns that skipping either can damage the tube, throttle body, or engine. Shoppers searching for a 2022-2024 Tundra V6 cold air intake, a 77-9042KP install, or a washable intake filter for the i-FORCE V6 will find the key details below.
The manufacturer lists the 77-9042KP for the 2022–2024 Toyota Tundra V6. Some other listings show wider year ranges, and details vary, so confirm your exact year and engine with the manufacturer before ordering.
Yes. The manufacturer states that the system replaces the factory air filter and intake tube. The install sheet also has you remove the factory upper housings and tubes.
The manufacturer says the washable filter needs cleaning about every 100,000 miles under normal highway driving conditions. Harsher or dustier conditions will shorten that interval.
The manufacturer's install sheet lists flat-blade and Phillips screwdrivers, a ratchet with extension, 8mm and 10mm sockets, 3mm and 4mm hex keys, side cutters, and an adjustable wrench. Disconnect the negative battery cable only after you write down your radio and memory settings, because disconnecting it erases stored electronic memory, and some radios will ask for an anti-theft code. Start by disconnecting the mass airflow sensor connectors and unhooking the harness clips, then release the upper housing clips and loosen the factory hose clamps. Move the mass airflow sensors into the K&N tubes, fit the couplers onto the turbo inlets, and secure everything with the supplied clamps. Trim the edge trim to the lengths the sheet specifies, and use a small amount of the supplied super glue on the air straighteners as shown. Install the filter adapters and K&N badges onto the heat shields with the provided hardware. Installation time varies by source: the manufacturer cites about 60 minutes, while other sources report anywhere from 90 minutes to roughly three hours for a first-timer. Plan for the longer end, and keep the packaged hardware in place, since the manufacturer warns that skipping it may damage the tube, throttle body, or engine.
