The K&N 33-5010 is a reusable, oiled cotton-gauze panel filter that drops into the factory airbox of the 6.7L Power Stroke V8 diesel in Ford Super Duty trucks. The manufacturer designs it for high air flow while maintaining the filtration levels needed for long engine life. Coverage is listed for FORD F250/F350/F450/F550 V8-6.7L DSL, 2011-2016. For a 6.7 Power Stroke owner searching for a washable 2011-2016 Super Duty diesel air filter, the case for it rests on reuse and airflow rather than a guaranteed power number. Owners on user forums are split. Some didn't notice any improvements over stock, and others question how well oiled media holds fine dust compared with the factory element.
The main reason to pay more than a stock replacement is reuse. This element is washable, so you clean and re-oil it at service intervals instead of buying a new disposable filter each time. Verify your year before ordering: a K&N filter listed for one year or model may not fit or seal correctly, so confirm the 33-5010 against your VIN or catalog. Long-tail searches this filter answers include "6.7 Powerstroke K&N air filter 33-5010," "reusable diesel panel air filter F-350 6.7," and "Super Duty 6.7 air filter install." DIY installation is straightforward, but the airbox lid and mass airflow sensor retainer need care, as covered below.
The manufacturer lists coverage for 2011-2016 Super Duty trucks with the 6.7L diesel. Because filters listed for one year or model may not seal correctly on another, confirm the fit against your VIN or the manufacturer's catalog before ordering.
No verified horsepower or torque figure is published for this filter. The manufacturer describes a high-flow design, and owners on user forums report mixed results, with some seeing no measurable difference from the stock element.
This is a drop-in swap, so no modifications are needed, but take care with the airbox. Per K&N's general installation guidance, clean the sealing surfaces, seat the filter in the groove on the lid, and make sure the lid sits fully on the base. If the filter, lid and base are not lined up correctly and you try to fasten the clips or screws that hold the two halves together you will most likely break the air box. Holding the filter in place with your fingers while you reinstall the lid helps keep it from dropping out of position. On the 6.7, owners on user forums report that the mass airflow sensor has a red retainer that must be pulled straight out to release the black clip above it before the air box can be opened. Plan on a short job with basic hand tools, and confirm the step sequence in the manufacturer's install sheet for your year.
