All of these air filters fit the Weber 32/36 DGV/DGAV/DGEV Progressive and 38 DGAS/DGES Synchronous 2-barrel downdraft carburetors. They will not fit the Weber DF series (DFB/DFT/DFV etc.).

Filters 1264, 3812, and 3813 mount perpendicular to the valve cover on the uprated FF1600 and FF2000 / S2000 engine.
(The long dimension of the oval will be perpendicular to the throttle shaft.)

The Pipercross 1265-005 and 1265-001 and the KN 56-9290 filter all mount parallel to the valve cover on these engines.
(The long dimension of the oval will be parallel to the throttle shaft.)

Part No.	Description	Price	Status
1265-005	Pipercross PX400 Air Filter, for Weber 32/36 DGV	$51.99	In Stock
1265-001	Pipercross Air Filter and Baseplate for Weber 32/36 DGV	$86.99	In Stock
1265-002	Pipercross Air Filter Element Only, 7.5 x 6.5 x 4.5 H	$59.99	In Stock
1265-003	Pipercross Aluminum Base Plate Only for 32/36 DGV	$29.99	In Stock
3812-Size	K&N Air Filter, Weber 32/36 DGV, DGAV, DGEV, - 4.5 x 7 Oval	$82.99 to $85.99	In Stock
KN E-3321	K&N Filter Element, Small Oval (4.5 W x 7 L x 1.75 H)	$32.99	In Stock
3859-10	K&N Filter Element, Small Oval (4.5 W x 7 L x 3.25 H)	$32.49	In Stock
3813-Size	K&N Air Filter, Weber 32/36 DGV, DGAV, DGEV, - 5.5 x 9 Oval	$111.99 to $115.99	Some In Stock
3859-03	K&N Filter Element, Large Oval (5.5 W x 9 L x 1.75 H)	$36.99	In Stock
3859-04	K&N Filter Element, Large Oval (5.5 W x 9 L x 3.25 H)	$41.99	In Stock
KN 56-9290	K&N Air Filter, Weber 32/36 DGV Tapered Oval	$81.99	In Stock
KN E-9141	K&N Filter Element, Tapered Oval Replacement for 56-9290 Kit	$50.99	In Stock