Our STC'd Louvers are an integral part of our cooling system. They can be installed on all bonanzas equipped with fuel injected engines. These louvers replace the original lower cowling access panels, the edges are rolled to tightly fit your aircraft.
Increased airflow for lower under cowling temperatures.
These louvers are STC'd and may be installed without any other kit. The D'Shannon Aviation high efficiency baffle cooling kit is strongly recommended to acheive maximum cooling efficiency. Temperatures stated are based on average readings and may vary from plane to plane.
Made to last, the louvers come with stainless steel hardware. Generally, there is a reduction in cylinder head temps by 20 degrees and a 10 degree reduction in oil temp.
