TECH
K&N AIRCHARGER INSTALL
WORDS AND PHOTOS: JEFF G. HOLT
SKILL LEVEL // BEGINNER
4 p The cylinder head breather bolts were threaded onto the engine
and left hand-tight to make minor adjustments.
BORED-OUT BREATHING
A
1
nyway you can open up the breathing on your Twin Cam Harley is a good thing. Especially when the intake you put on the bike is as good looking as the K&N AirCharger. The pleasant-to-look-at sandcast aluminum finish of the AirCharger harks back to a time when muscle cars ruled the land. And the big free-breathing million-mile air cleaner that adds horsepower hanging on the end of it is not a bad thing either. We put it on a 2015 Twin Cam motor with cam work and a free-flowing exhaust, and it really woke the bike up. Here’s how we did it. HB
2 will hold the sand-cast intake tube onto the bike.
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AirCharger’s backing plate and the throttle body.
6 p Three bolts that hold the K&N backing plate onto the throttle
p We took the OE air cleaner and plumbing off the bike and cleaned the grime off the throttle body and crankcase vent holes.
p Four set screws were installed onto the K&N backing plate. These
5 p The K&N supplied gasket was then installed between the
body were threaded into place and tightened to factory specs.
3 p Four rubber O-rings were installed onto the K&N backing plate
where it bolts to the engine cylinder heads to keep things sealed up nice and tight.
7 p The supplied rubber gasket was placed between the backing
plate and the intake tube. At this time the breather bolts were tightened down to factory specs.
