Description
Deep Well Float Bowl Nut
Increase Float Bowl Capacity
Deep Well Float Bowl Nuts were designed to store more fuel around the main jet, eliminating the potential of running lean due to fuel starvation. The Dial-A-Jet fuel pick-up is placed further from the main jet eliminating fuel cavitation between the two circuits. Deep Well Nuts are also a space saver allowing you to place the Dial-A-Jet, Intel-A-Jet or Thunder PowerJet fuel pick-up on the side of the nut rather than the bottom.
Keihin
DJ-548 Stock DJ-549
All above deep well float bowl nuts are machined from billet 6061 Aluminum.
Harley Davidson S&S carburetor Deep Well Float Bowl Nut – billet brass
All Deep Well Float Bowl Nuts include gaskets.
DJ-540
Fits: 32mm – 38mm VM roundslide Mikuni carbs and TM 33, TM 42-48, TMX 42-48
and TMS 42-48
-Thread OD on Nut = .6245″
-Depth (from gasket surface to bottom) = .82″
DJ-545
Fits: 40mm – 44mm VM roundslide Mikuni carbs
-Thread OD on Nut = .8585″
-Depth (from gasket surface to bottom) = .9″
DJ-545-Blem
DJ-545 with cosmetic blemishes
DJ-547
Fits most Keihin carbs including most FCR carbs. Great for vehicles with limited space under carb.
-Thread OD on Nut = .6945″
-Depth (from gasket surface to bottom) = .45″
Tech note DJ-548 & DJ-549: The floor of the stock float bowl nut and main jet are so close to the fuel flow holes in the stock nut that a hard landing will actually force fuel out the flow holes, causing the engine to suck air under heavy load and resulting in extreme engine damage and failure. We have moved the flow holes in the DJ-548 and DJ-549 so that this condition does not occur using these nuts.
DJ-548
Fits: Mikuni 38mm and 40mm TM Rack style carbs (OEM on Dial-A-Jet deep well float bowl nut, increase capacity, more fuel, Mikuni, Keihin, Arctic Cat and Polaris snowmobiles). Also fits 38mm and 40mm TM Rack style carbs on Ski-Doo providing you have ample room for the extra length.
-Thread ID = .43″
-Depth (from gasket surface to bottom) = .87″
DJ-549
Fits: Mikuni 38mm and 40mm TM Rack style carbs (OEM on Arctic Cat, Polaris and Ski-Doo snowmobiles). NOTE: Due to engine placement on some model Ski-Doo’s, only the DJ-549 will fit. The inside bore is deeper in the DJ-549 because it does not have an external bottom bore like the stock float bowl nut (see photo on right).
-Thread ID = .43″
-Depth (from gasket surface to bottom) = .3″
DJ-542
Fits: Harley Davidson S&S carburetors – Billet Brass
-Thread OD = .5″
-Depth (from gasket surface to bottom) = .48″
