DUAL SNORKEL DBW AIR CLNR - CHROME
Fits LS3-Style DBW Throttle Body - Cotton Gauze Element
Overview
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 4150/4160 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 - Holley EFI part # 17-93 is recommended. All part numbers in this series: 120-500 - 16-Inch DBW Air Cleaner - Chrome 120-501 - 16-Inch DBW Air Cleaner - Black 120-520 - 14-Inch Dual Snorkel DBW Air Cleaner - Chrome 120-521 - 14-Inch Dual Snorkel DBW Air Cleaner - Black
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
- Available in Black and Chrome finishes
- 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
About Holley

Holley Performance Brands is the undisputed leader in carburetors, fuel pumps, fuel injection, intake manifolds, fuel injection, and fuel systems.
Specs
| Base Color | Chrome |
|---|---|
| Base Finish | Chrome |
| Base Gasket Included | No |
| Base Material | Aluminum |
| Base Style | 4150 |
| Brand | Holley |
| Category | Air and Fuel Delivery |
| Configuration | Multi Piece |
| Diameter | 14 IN |
| Emission Code | 3 |
| Filter Color | Red |
| Filter Diameter | 14 in. |
| Filter Height | 3" |
| Filter Material | Cotton Gauze |
| Filter Type | Cotton Gauze |
| Finish | Chrome |
| Flange Gasket Included | No |
| Grade Type | Performance |
| Height | 3 IN |
| Housing Finish | Chrome |
| Housing Material | Aluminum |
| Housing Surface Type | Smooth |
| Lid Color | Chrome |
| Lid Finish | Chrome |
| Lid Gasket Included | Yes |
| Lid Material | Aluminum |
| Lid Style | Plain |
| Marine Approved | No |
| Material | Aluminium |
| Mounting Hole Quantity | 4 |
| Nut Included | Yes |
| Part Type | Air Cleaner Assembly |
| Product Type | Air Cleaner |
| Shape | Round |
| Size | 14 in. |
| Snorkel Quantity | 2 |
| Snorkel Shape | Oval |
| Stud Included | Yes |
| Sub Category | Carburetion |
| Warranty | Limited 90 Day |
| Washable/Reusable Filter | Yes |
| UPC | 090127109793 |
| Part Number | 120-520 |
Emissions
3
This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.
The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:
- 1965 and older U.S. manufactured California Certified vehicles
- 1967 and older U.S. manufactured Federally Certified vehicles
- 1967 and older Foreign manufactured vehicle
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
The following vehicles are considered Emissions Controlled Vehicles:
- 1966 and newer U.S. manufactured California Certified vehicles
- 1968 and newer U.S. manufactured Federally Certified vehicles
- 1968 and newer Foreign manufactured vehicle
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