Fuel pump Isuzu 8980093971

An electric fuel feed pump (lift pump) for the low-pressure side of the fuel system on Isuzu industrial diesel engines — series 4HK1, 6HK1, 4JJ1 and 4LE2. The pump draws diesel from the tank through the pre-filter and delivers it at a stable low pressure to the high-pressure injection pump. This keeps the fuel system primed, prevents air ingress at the injectors, and shortens cranking time after fuel-filter service or extended downtime.

The pump is originally fitted to construction machinery and industrial gensets powered by these Isuzu engines, including Hitachi excavators (ZX110-3 through ZX330-3, ZAX240, EX240, EX330-3), Sumitomo SH240/SH350, Kobelco, JCB JS-series (JS115–JS330), Case, John Deere D/G-series and Sany.

• OEM number: 8980093971 (8-98009397-1)
• Cross-reference numbers: 8980093970, 4645227 (Hitachi), 17/926100 (JCB)
• Type: electric fuel feed pump, low pressure
• Voltage: 24 V DC
• Typical flow rate: 90–110 L/h (verify with product specification)
• Function: delivers diesel from tank to high-pressure injection pump
• Condition: new, aftermarket replacement

• Isuzu 4HK1 (4-cylinder, 5.2 L)
• Isuzu 6HK1 (6-cylinder, 7.8 L)
• Isuzu 4JJ1 (4-cylinder, 3.0 L)
• Isuzu 4LE2 (4-cylinder, 2.2 L, Tier 4 / Stage 3B)

• Hitachi: ZX110-3, ZX120-3, ZX130-3, ZX135US-3, ZX200-3, ZX240-3, ZX270-3, ZX330-3, ZAX200, ZAX210, ZAX230, ZAX240, EX240, EX330-3
• Sumitomo: SH240, SH350
• JCB: JS115, JS130LC, JS145LC, JS160 T3, JS175W T3, JS200, JS220, JS240, JS290, JS330, JZ140
• John Deere: 135D, 135G, 190DW, 190GW, 220DW
• Kobelco, Case and Sany: models powered by Isuzu 4HK1 / 6HK1 / 4LE2
• Stationary industrial gensets using the listed Isuzu engines

• Confirm the voltage of your machine (12 V or 24 V) and select the matching variant — applying the wrong voltage will permanently damage the pump.
• Check the OEM number stamped on your existing pump before ordering; Isuzu OEM numbers can differ between visually similar pumps depending on engine series.
• After fitting, bleed the fuel system in accordance with the machine service manual.
• The pump is not intended for the high-pressure side of a common-rail system — it functions only as a low-pressure feed pump.