The most common and most likely answer to this crossword clue is the 10 letter word AIR-INTAKE
I've seen this crossword clue in Financial Times
A
I
R
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I
N
T
A
K
E
More clues leading to the result AIR-INTAKE
Buddy explains!

The straight part
We know that "Gasp/engine part" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case gasp/engine part = air-intake.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.