K&N Engineering

CARB Executive Order · Air Intake

EO D-269-99

K&N Engineering · Fuel Injection Performance Kit

Executed
July 2021
Rows shown
1
PDF pages
3
Open the original EO PDF

Vehicles and part numbers in Exhibit A

Rows below are copied from the EO's vehicle table (Exhibit A). Listed in CARB EO D-269-99; final determination by CARB / Smog Check station.
2018–2021 Ford Mustang · 5.0L NA
57-2605

K&N retains OEM air box which incorporates the factory Hydrocarbon Trap.

Compare other brands for these vehicles

Ford Mustang

What the EO says about the part

The Fuel Injection Performance Kit includes the following main components: reusable drop-in air filter, intake system tubing, couplers, and clamps. The stock air box and hydrocarbon trap are retained.

Quoted from EO D-269-99. The EO exempts the part from California Vehicle Code Section 27156 only for the vehicles it lists.

More EOs from K&N Engineering

PreviousD-269-98Fuel Injection Performance Kit NextD-269-100Fuel Injection Performance Kit, 77 Series, and Blackhawk Intake Systems
All 111 K&N Engineering EOs we read All vehicles with an EO-listed air intake

Source: CARB Executive Order D-269-99 (PDF), retrieved November 11, 2026. EOs can be amended, superseded or revoked; CARB's copy is the authority. Independent reference, not affiliated with CARB.