Holley 120-521 Retrofilter Drive By Wire Air Cleaner, 14 Inch

#425120521

Holley 120-521 Retrofilter Drive By Wire Air Cleaner, 14 Inch

Allows full EFI functionality stealthily hidden within a traditional looking air cleaner package
Each kit includes a 3-inch tall, pre-oiled, washable and reusable premium cotton gauze filter element
Adapts to LS style drive-by-wire throttle bodies found on the LS2, LS3, LS7, etc.

$279.95

/each

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Product Summary

Universal Fit, Fully Enclosed Housing Style, Red, Black

Allows full EFI functionality stealthily hidden within a traditional looking air cleaner package
Each kit includes a 3-inch tall, pre-oiled, washable and reusable premium cotton gauze filter element
Adapts to LS style drive-by-wire throttle bodies found on the LS2, LS3, LS7, etc.
Can be installed on any vehicle running a top mounted 4150/4BBL EFI capable intake manifold with LS3 DBW wiring components
Stamped aluminum lid and base for optimal durability and light weight.

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Key Specs

MFG. Part #	120-521
Brand	Holley
Shape	Round
Overall Diameter	14"
Filter Material	Cotton Gauze

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Holley 120-521 Details

RetroFilter air cleaners cleverly hide an LS drive-by-wire throttle body inside to maintain a low height and classic looks. Utilizing a hidden opening in the base to hide unsightly wiring from the throttle body, this trick air cleaner allows you to experience all the benefits of modern technology and keep the vintage look you want. Pair with any Holley intake manifold with a 4150/4610 square bore flange for maximum aesthetics and performance.

The opening is 92mm but any 4-bolt pattern LS throttle body will physically fit. We recommend the LS2/LS3/LS7 style but the L33, L76, and L92 should also fit.

*Requires adapter to connect to 4150/4160 square bore flange style manifold.

Features:

Allows full EFI functionality stealthily hidden within a traditional looking air cleaner package
Each kit includes a 3-inch tall, pre-oiled, washable and reusable premium cotton gauze filter element
Adapts to LS style drive-by-wire throttle bodies found on the LS2, LS3, LS7, etc.
Can be installed on any vehicle running a top mounted 4150/4BBL EFI capable intake manifold with LS3 DBW wiring components
Stamped aluminum lid and base for optimal durability and light weight.

PLEASE NOTE: While some Gen V LT DBW throttle bodies may share the same bolt pattern, they will not fit properly.

Guides & Documents

Air Cleaners Installation Instructions (425120521)

CA Prop 65

Holley 120-521 Specifications

KEY SPECS
MFG. Part #	120-521
Brand	Holley
Shape	Round
Overall Diameter	14"
Filter Material	Cotton Gauze

GENERAL
Housing Style	Fully Enclosed
Filter Height	3"
Base Style	Raised
Filter Color	Red
Housing Material	Aluminum
Housing Finish	Powder Coated
Housing Color	Black
Material Type	Aluminum
Finish	Powder Coated
Color	Black
Gasket(s) Included	Yes
Hardware Included	Yes
Sold in Quantity	Kit
GTIN Code	090127109809
Air Filter Included	Yes

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