John,

Massive 400-500 Hrs if well cared for.
Fine Wire I will let you know when I overhaul the engine. I have several
hundred hours on a set and they are showing now signs of wear.

Michelle

john smith wrote:

How many hours of service should one expect from a set of spark plugs?
(i.e.- Lycoming IO-520 in a PA32-300)



--

Michelle P CP-ASMEL-IA, and AMT-A&P

"Elisabeth" a Maule M-7-235B (no two are alike)

Volunteer Pilot, AirLifeLine

Volunteer Builder, Habitat for Humanity