This is a new, genuine Kubota O-ring, part number 04814-50300. Kubota names it O RING.

Kubota’s own parts books list it in the head cover drawing of engines such as the D722, D902, D905, D1105, V1305, V1505, Z482 and Z602, and in the optional upper gasket kit for several more. On some engines the head cover row carries a serial note, for example serial 9VZ999 and earlier on the Z482-E3B and D1105-E3B, so check your engine serial number against the book.

Specifications

Fits / Applications

• D1005-E4B (Kubota parts book D1005-E4B-KEA-2A): optional gasket kit only, qty 1
• D1305-E4B (Kubota parts book D1305-E4B-KEA-1A): optional gasket kit only, qty 2
• D722-E3B (Kubota parts book D722-E3B-KEA-2): head cover drawing, qty 1; also in Kubota’s optional gasket kit
• D902-E3B (Kubota parts book D902-E3B-KEA-1): head cover drawing, qty 1; also in Kubota’s optional gasket kit
• D905-E2B (Kubota parts book D905-E2B-SAE-1): head cover drawing, qty 1
• D722 (Kubota parts book D722-E2B/E3B/E4B-SEC-2): oil pan drawing, qty 1 (serial 4CZZ999 and earlier); head cover drawing, qty 1 (serial 9U6318 and earlier)
• V1305-E2B (Kubota parts book V1305-E2B-EU-X1): head cover drawing, qty 1
• V1505-E3B (Kubota parts book V1505-E3B-KEA-1): head cover drawing, qty 1; also in Kubota’s optional gasket kit
• V1505-E4B (Kubota parts book V1505-E4B-KEA-1A): optional gasket kit only, qty 1
• V2607-DI-TE3B (Kubota parts book V2607-DI-TE3B-KEA-1): dipstick and guide drawing, qty 1 (serial 9ZZ999 and earlier); head cover drawing, qty 1 (serial 9ZZ999 and earlier); also in Kubota’s optional gasket kit
• Z402-E2B (Kubota parts book Z402-E2B-DGDE-4): optional gasket kit only, qty 1
• Z602-E3B (Kubota parts book Z602-E3B-KEA-1): head cover drawing, qty 1; also in Kubota’s optional gasket kit
• D902-E4B (Kubota parts book D902-E4B-YMB-1): optional gasket kit only, qty 1
• Z482 (Kubota parts book Z482-E2B-SEC-2/E3B/E4B-SEC-2): oil pan drawing, qty 1 (serial 4CZZ999 and earlier); head cover drawing, qty 1 (serial 9VZ999 and earlier)
• D1105-E3B (Kubota parts book D1105-E3B-KEA-1): head cover drawing, qty 1 (serial 9VZ999 and earlier); also in Kubota’s optional gasket kit
• DF1005 (Kubota parts book DF1005-E2BB): head cover drawing, qty 1 (serial 9VZ999 and earlier)
• DF752-E2 (Kubota parts book DF752-E2-GENIE): head cover drawing, qty 1
• DF972-E2 (Kubota parts book DF972-E2-KEA-1): head cover drawing, qty 1; also in Kubota’s optional gasket kit
• DF1005 (Kubota parts book DF1005-BBH): head cover drawing, qty 1
• DF1005 (Kubota parts book DF1005-E2BBH): head cover drawing, qty 1
• DF752-E2 (Kubota parts book DF752-E2-GENIE-2): head cover drawing, qty 1
• WG1005 (Kubota parts book WG1005-BB): head cover drawing, qty 1
• WG1005 (Kubota parts book WG1005-E2BBH): head cover drawing, qty 1 (serial 9VZ999 and earlier)
• WG2503-G-E3 (Kubota parts book WG2503-G-E3-AIE-1): head cover drawing, qty 1
• WG752-G-E3 (Kubota parts book WG752-G-E3BBH-1): optional gasket kit only, qty 1
• WG972-G-E4 (Kubota parts book WG972-G-E4-KEA-1): optional gasket kit only, qty 1
• Z482 (Kubota parts book Z482-B-SEC-1/E2B-J-PRC/E4B-PRC): head cover [old] drawing, qty 1; head cover [new] drawing, qty 1 (serial 9U6230 and earlier)
• Z482 (Kubota parts book Z4822BSEC2/GLPRC/4BPRC/3BCHN): head cover drawing, qty 1 (serial 9U6230 and earlier)
• Z482-E3B (Kubota parts book Z482-E3B-KEA-2): head cover drawing, qty 1 (serial 9VZ999 and earlier); also in Kubota’s optional gasket kit
• Kubota D1105-T-E2B-EU-X1

Other Kubota engines

Kubota’s parts book also lists 04814-50300 for the Kubota WG750 gas engine (WG750-B-ARIENS, WG750-B-SAEH-LP-2). Kubota’s parts book also lists 04814-50300 for the Kubota GL7000 generator (GL7000-CAN, GL7000-USA-TM) and the Kubota GL11000 generator (GL11000-CAN, GL11000-STD(60HZ)) and the Kubota GL14000 generator (GL14000-USA).

Frequently Asked Questions

Where does O-ring 04814-50300 go?

Kubota’s parts books show it in the head cover drawing on engines such as the D722, D902, D1105, V1505, Z482 and Z602, and in the upper gasket kit for several others.

Does it fit every serial number?

Not always. On some engines Kubota limits the head cover row by serial, for example serial 9VZ999 and earlier on the Z482-E3B. Check your engine serial number.

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Kubota gas engines

Kubota’s parts book also lists 04814-50300 for the Kubota DG972 (DG972-E2-BBH-1, DG972-E2-SAEH-1).