K&N X-Stream Universal Clamp On Filter Fits 3 in (76 mm) KNRX-3900-1 Product:4.625 in (117 mm) H x 4.5 in (114 mm) Base OD x 6 in (152 mm) Top OD - KNRX-3900-1 42S Specs: 2-3

42S Specs: 2-3

0cc Gram Weight: 641 Footnote: Oil Rail Support is Included Oversize:

Lightweight heat-resistant phenolic

GM LS Rectangle Port to Cathedral Port Aluminium Intake AdaptersDifferent length intake manifold bolts may be required (not included)

Sending Unit Options:

K&N X-Stream Universal Clamp On Filter Fits 3 in (76 mm) KNRX-3900-1 Product:4.625 in (117 mm) H x 4.5 in (114 mm) Base OD x 6 in (152 mm) Top OD - KNRX-3900-1 42S Specs: 2-3K&N X Stream Universal Clamp On Filter Fits 3 in (76 mm)4. 625 in (117 mm) H x 4. 5 in (114 mm) Base OD x 6 in (152 mm) Top OD KNRX 3900 1 KNRX 3900 1 RX 3900 1 K&N XStream Top Universal Air Filters take performance to the next level with the addition of a filter within the filter's top adding more filter area for higher air flow and a longer service interval. The XStream Air Filter provides awesome air flow and outstanding filtration. When racing, in