8-97065-384-0 8-97065-384-1 Oil Pump Assembly for Hitachi ZX120 ZX130

8-97065-384-0 Oil Pump for Hitachi ZX120 and ZX130

The 8-97065-384-0 / 8-97065-384-1 engine oil pump is supplied for Hitachi excavator engine lubrication system repair. It is commonly searched as 8970653840, 8970653841, engine oil pump, oil pump assembly or lubrication oil pump for Hitachi ZX120, ZX130 and related excavator references using Isuzu 4BG1 / 4BG1T diesel engine applications.

This page focuses on 8-97065-384-0 and 8-97065-384-1 as the main part numbers. 8970653840 and 8970653841 are compact writing formats, while 1-13100-136-2, 1131001362, 5-13100-136-2 and 5131001362 may appear as checking references in aftermarket oil pump listings. Final fitment should be confirmed by the old oil pump number, engine model, pump body shape, gear side, mounting face and machine information before ordering.

Engine Application: Isuzu 4BG1 and 4BG1T

For this product page, the engine model is an important confirmation point. The Isuzu 4BG1 and 4BG1T engine direction is more stable than relying only on a machine model, especially when the excavator has previous repair history, engine replacement or non-original engine parts.

Some market references may also mention nearby Isuzu 4-cylinder engine families such as 4BD1 or 4BA1. These should be treated as checking references only. For this Topvelsun page, the main SEO and buyer signal should stay focused on 8-97065-384-0, 8970653840, Hitachi ZX120 / ZX130 and Isuzu 4BG1 engine repair.

If the buyer only provides the excavator model, ask for the engine nameplate and old oil pump photos. If the buyer only provides the engine model, confirm the removed pump number and physical pump details before quotation.

Machine Reference for Hitachi ZX and EX Excavators

The strongest machine references for this oil pump page are Hitachi ZX120 and ZX130. Public aftermarket references may also connect 8970653840 with Hitachi ZX110, ZX125US, ZX135UR, ZX135US, ZX160, ZX95, EX120-5, EX100-5 and EX140US-5 application directions.

These model names should be treated as application references, not as the only fitment proof. Hitachi excavators from older EX and ZX series may have different engine versions, regional configurations or previous overhaul history.

For accurate ordering, compare the removed oil pump with the replacement unit before shipment. Photos of the pump gear side, body housing, mounting face, oil passage area, old part number and engine nameplate are useful for confirmation.

Part Number and Cross Reference Notes

8-97065-384-0 and 8-97065-384-1 are the main part number directions for this product page. The compact formats 8970653840 and 8970653841 should be included for buyer search coverage, but they should not replace the original hyphenated part numbers as the main page signal.

1-13100-136-2 and 5-13100-136-2 are commonly shown together with 8-97065-384-0 in Isuzu oil pump references. 1131001362 and 5131001362 are compact writing formats for the same checking direction. These numbers are useful for matching, but the old pump should still be checked before ordering.

This page should not be mixed with oil pump numbers for 6BD1, 6BG1, 4HK1 or other larger Isuzu engine families. Keeping this page focused on 8-97065-384-0, 8970653840 and Isuzu 4BG1 helps avoid part number dilution and wrong-part inquiries.

How to Confirm the Correct 8-97065-384-0 Oil Pump

Engine oil pumps can look similar from the outside, but small differences in gear design, mounting face, oil passage layout or pump housing shape may cause installation problems. Before ordering, compare the removed pump carefully.

• Confirm whether the old oil pump number is 8-97065-384-0, 8-97065-384-1 or a listed checking reference.

• Check whether the engine model is Isuzu 4BG1 or 4BG1T.

• Compare the pump gear side, body housing and mounting face.

• Check oil inlet, oil outlet and internal oil passage positions.

• Confirm gasket surface, bolt hole pattern and timing cover fitment area.

• Send machine model, engine nameplate and old oil pump photos before quotation if you are not sure.

Why Old Pump Photos Are Important for ZX120 and ZX130 Repairs

Hitachi ZX120 and ZX130 excavators often work for long service hours, and many units may have already gone through engine repair, pump replacement or mixed-source parts installation. In these cases, the machine model alone may not be enough for final oil pump confirmation.

The most useful photos are the front housing view, gear side view, mounting face, bolt hole area and any casting or stamped number on the old pump. If the pump has already been removed, photos of the timing cover area can also help confirm the correct replacement direction.

This confirmation process is especially important for distributors and repair shops that supply parts remotely, because it reduces wrong-part returns and machine downtime.

Common Oil Pump Failure Symptoms

An engine oil pump may need replacement when the excavator shows low oil pressure, oil pressure warning, unstable lubrication after startup, abnormal bearing noise, overheating, metal particles in engine oil or serious internal engine wear.

On older Hitachi excavators, low oil pressure may appear after long work cycles, poor oil maintenance, engine overheating, oil sludge buildup or internal bearing wear. The oil pump should be checked together with the complete lubrication system.

These symptoms are not always caused by the oil pump itself. Blocked oil passages, dirty engine oil, worn bearings, damaged pickup tube, clogged strainer, pressure relief valve problems or incorrect engine oil viscosity can create similar problems.

Troubleshooting Before Replacement

Before ordering an 8-97065-384-0 replacement oil pump, check the lubrication system and the real reason for low oil pressure. This helps avoid replacing the pump when the root cause is oil contamination, bearing wear or blockage.

• Check engine oil level, oil grade and oil contamination.

• Inspect the oil filter, oil strainer and pickup tube condition.

• Check whether sludge or metal particles are present in the oil pan.

• Inspect crankshaft bearings, camshaft bearings and related lubrication surfaces.

• Confirm whether the pressure relief valve is stuck, worn or contaminated.

• Clean the oil circuit if the old pump failed due to contamination, sludge or engine wear.

Installation and Maintenance Notes

Before installation, clean the timing cover area, mounting surface and oil passages. Compare the replacement pump with the removed unit, including gear position, pump body shape, bolt holes and gasket surface.

Use a proper gasket or sealing method according to the engine repair requirement. After installation, check oil pressure during startup and confirm that oil circulates normally before putting the engine under load.

For longer service life, use clean engine oil, replace filters on time and avoid running the engine with low oil pressure. If the previous failure was caused by sludge, bearing wear or contamination, those causes should be corrected during repair.

Buying Notes for Repair Shops and Parts Distributors

For repair shops, this 8-97065-384-0 / 8-97065-384-1 oil pump is suitable for Hitachi ZX120, ZX130 and Isuzu 4BG1 engine lubrication repair when the old pump is worn, damaged or unable to maintain stable oil pressure.

For parts distributors, it can be supplied as a replacement oil pump reference for Hitachi compact and mid-size excavator service demand. Topvelsun supports small repair orders and bulk inquiries. Please send the required quantity, old pump number, engine model, machine model and photos of the old oil pump from multiple angles.

FAQ

What is the main product on this page?

This page is for the 8-97065-384-0 / 8-97065-384-1 engine oil pump used for Hitachi excavator and Isuzu 4BG1 engine lubrication system repair.

Is 8970653840 the same search reference as 8-97065-384-0?

8970653840 is the compact writing format of 8-97065-384-0. The main part number of this page should remain 8-97065-384-0, and the removed oil pump should still be checked before ordering.

Can 1-13100-136-2 be used as a reference?

Yes. 1-13100-136-2 and 1131001362 may appear together with 8-97065-384-0 in Isuzu 4BG1 oil pump references. Final fitment should be confirmed by the old pump number and physical pump configuration.

Which engine models are the main references?

The main engine references are Isuzu 4BG1 and 4BG1T. Some market references may mention nearby Isuzu 4-cylinder engines, but the old pump and engine nameplate should be checked before shipment.

Which machine models can be used as references?

The main machine references are Hitachi ZX120 and ZX130. Other references may include ZX110, ZX125US, ZX135US, ZX160 and EX120-5 depending on engine configuration and old pump number.

What should I check before ordering?

Please check the old oil pump number, engine model, pump body shape, gear side, mounting face, bolt hole pattern and oil passage position. Clear photos of the removed pump are recommended.

What can cause repeated oil pump or low oil pressure problems?

Repeated problems may be caused by dirty engine oil, clogged oil strainer, blocked oil passages, worn bearings, pressure relief valve faults, sludge in the oil pan or installing a new pump without cleaning the lubrication system.