3595995 Hub Cap Window Cover Kit for 3434009 Hub Caps 4 Set 359-5995 Hubcap About this item PRODUCT CONTAINS: The CheeMuii 359-5995 hub cap window kit include: 4 pcs rubber vent plugs, 4 pcs oil windows, 8 pcs window ring gaskets, 4Pcs hub cap gaskets, 25 pcs bolts. And our parts are designed and manufactured according to OEM standard, which can perfectly replace your damaged parts VISIBLE WINDOW COVER : We adopt high strength transparent plastic oil windows, that can visually see the condition of hub oil in the axle, convenient to add hub oil in time. And the oil windows are tight sealing with gaskets to prevent leakage NO-LEAK : The hubcap plugs and gaskets are designed and manufactured according to OEM standards with excellent sealing and compatibility. They are exquisitely crafted, with a smooth surface and no bubbles inside, and plugs are designed with a vent hole to release extra pressure DIMENSION : Plastic window center hole I.D: 1-1/8'', plastic window O.D: 3-1/2'', rubber plug OD: 1-1/8'', white gasket hole pitch: 3-7/8" on center, hub cap gasket hole pitch: 5-1/2" on center. Please check the size information and compatibility carefully before placing orders REPLACEMENT: Plastic window covers and rubber plugs replace for Stemco 359-5990, hub cap gaskets replace for Stemco 330-3009. Hub cap window kit fit for Stemco 343-4009, 3434009, GMC/Volvo 921010009, 862500, etc. And compatible with Stemco/GMC/Volvo/Spicer-Dana/Strick/Timpte/Trailmobile semi truck hub caps