Zipper's Performance 117-449 User Manual

Installation Instructions for Zippers

Max Flow Air Cleaner # 117-448

High Flow Air Cleaner # 117-449

List of Materials

(1) Gasket, carb to a/c backplate (1) Air filter element
(4) Air cleaner backplate o-rings (3) Air filter mounting stanchions
(2) breather bolts (3) Torx head cap screws
(1) Air cleaner backplate (1) Air cleaner inner cover washer

These kits are designed to be used on Twin Cam® engines equipped with the standard Twin Cam®
“football” air cleaner cover, which makes 360º contact between the cover back and the rubber gasket on
the filter. Do not install decorative cover inserts (due to increased weight) or use 2006-up CVO Touring
model covers that do not make 360º contact between the cover back and the rubber gasket.

1. Remove existing air cleaner assembly, including backplate and black support bracket.
Retain factory supplied cover and mounting screw (bracket is not re-used).

2. Place new gasket onto backplate, aligning holes and mounting studs.

3. Install (2) o-rings into counterbores on backplate where backplate meets cylinder head
(a dab of grease will hold them in place during installation). Place backplate over throttle body
with gasket in place. Apply low strength threadlocker such as blue Loctite® to stanchion studs
and loosely attach backplate to throttle body or carburetor (do not tighten yet).

4. Install (2) o-rings over supplied breather/support bolts into recessed area under the bolt
heads. Apply low strength threadlocker such as blue Loctite® to support bolt threads; install
bolts through backplate into cylinder heads. Tighten support bolts to 120-140 in/lbs (13.5-16.0
Nm). Tighten (3) stanchions through backplate into throttle body and tighten to 85-90 inch
pounds in a sequence. Due to the thickness of the backplate gasket, perform several

rounds of the tightening as the gasket will crush and relax the torque on the stanchions.
3-4 tightening rounds should be performed to ensure proper torque.

5. Apply low strength threadlocker such as blue Loctite® to (3) Torx head screws provided
and install filter element to stanchions.

6. Re-install the air cleaner cover bolt through the cover. Dab a small
amount of silicone seal to one side of the supplied thick washer. From
inside the cover, place the supplied washer over the bolt, silicone side
towards air filter element. Apply Loctite on the threads of the bolt and
install the cover assembly onto the air filter element.

This product is legal in California only for racing vehicles which may never be used upon a highway.

Place washer
inside cover

Tips For Cleaning Your Max Flow Filter Element

Gently shake off
and brush away
excess dirt.
Spray on
Cleaning

Solution so that
the filter is fully saturated,
and let soak for 10 minutes.
Rinse filter from the clean
side to the dirty side until
water comes through clear.

Use only low pressure from a
tap or hose.

Allow filter to
dry. A fan may
be used to
speed process.

DO NOT use
heated air blowers,
compressed air, or open
flame.

Make one
careful
application of
Filter Oil to each
filter pleat.

Allow oil to seep
into filter for 20 minutes.
Re-oil any areas that still
appear dry. Do not over oil.

Thank You for Purchasing a Zippers Performance Product!

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