123900-32001 Oil Pump Assembly for Takeuchi TL150 & Komatsu 4D106

123900-32001 Oil Pump for Takeuchi TL150 and Komatsu PC95R-2

The 123900-32001 engine oil pump is supplied for compact equipment and small diesel engine lubrication system repair. It is commonly searched for Takeuchi TL150, Komatsu PC95R-2, PC110R-1, PW95R-2, PW110R-1 and machines using Yanmar 4TNE106, 4TNV106 or Komatsu 4D106 engine references.

This page focuses on 123900-32001 as the main part number. 12390032001 is the compact no-hyphen search format, while YM123900-32001, 123900-32000 and YM123900-32000 may appear as checking references in aftermarket listings. Final fitment should be confirmed by the old oil pump number, engine model, pump body shape, gear design, mounting face and machine information before ordering.

Engine Application: Yanmar 4TNE106, 4TNV106 and Komatsu 4D106

This oil pump is mainly positioned for Yanmar 4TNE106 / 4TNV106 and Komatsu 4D106 / 4D106T engine repair. These engines are often used in compact excavators, track loaders, backhoe loaders and other small construction machines, so buyers may search by either machine model or engine model.

For engine-part SEO, this page should not rely only on the Takeuchi TL150 or Komatsu PC95R-2 model name. The engine model is often the safer confirmation point, especially when the machine has been rebuilt, repowered or purchased as used equipment.

If the buyer only provides a machine model, ask for the engine nameplate and old oil pump photos. If the buyer only provides an engine model, confirm the old pump number, gear side and pump body details before quotation.

Machine Reference: Takeuchi TL150 and Komatsu Compact Equipment

Takeuchi TL150 is a strong machine reference for this product page. Komatsu PC95R-2, PC110R-1, PW95R-2 and PW110R-1 also appear as common compact equipment references for the 123900-32001 oil pump direction.

These model names should be treated as application references, not as the only fitment proof. Compact equipment can have different engine arrangements, previous repair history or regional engine versions.

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

Part Number and Reference Notes

123900-32001 is the main part number of this product page. The compact format 12390032001 can be included for search coverage, but it should not replace the original hyphenated part number as the main page signal.

YM123900-32001 is a common Yanmar-style reference for this oil pump direction. 123900-32000 and YM123900-32000 may appear as earlier or related checking references in aftermarket listings. These numbers are useful for buyer search coverage, but the old pump should still be checked before ordering.

This page should not be mixed with unrelated Yanmar oil pump numbers for 4TNV98, 4TNE98 or smaller 4TNV94 engine pages. Keeping this page focused on 123900-32001, Yanmar 4TNE106 / 4TNV106 and Komatsu 4D106 helps avoid part number dilution.

How to Confirm the Correct 123900-32001 Oil Pump

Compact engine oil pumps can look similar from the outside, but the gear design, body thickness, mounting face and oil passage layout may differ. Before ordering, compare the removed pump carefully.

• Confirm whether the old oil pump number is 123900-32001, 12390032001 or a listed checking reference.

• Check whether the engine model is Yanmar 4TNE106, 4TNV106, Komatsu 4D106 or 4D106T.

• Compare the pump gear side, body shape 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 Gear Side Matching Matters

On this type of compact diesel engine oil pump, the gear side and timing cover fitment area are important checking points. A pump may look correct from the front view but still differ in gear position, gear thickness, internal passage or bolt hole alignment.

For repair shops, the best confirmation method is to photograph both the pump body side and the gear side. If the oil pump has already been removed, photos of the timing cover mounting area can also help confirm whether the replacement direction is correct.

This is especially important for compact machines that may have used replacement engines or mixed engine configurations during previous repairs.

Common Oil Pump Failure Symptoms

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

For compact loaders and small excavators, low oil pressure can appear after long work cycles, dirty oil service history, engine overheating or operation under dusty jobsite conditions. 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 oil viscosity can create similar problems.

Troubleshooting Before Replacement

Before ordering a 123900-32001 replacement oil pump, check the lubrication system and the reason for low oil pressure. This helps avoid replacing the pump when the real problem 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 mounting surface, timing cover area 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 123900-32001 engine oil pump is suitable for Takeuchi TL150, Komatsu compact equipment and Yanmar 4TNE106 / 4TNV106 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 compact equipment and small diesel engine 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 123900-32001 engine oil pump used for Yanmar 4TNE106, 4TNV106 and Komatsu 4D106 engine lubrication system repair.

Is 12390032001 the same search reference as 123900-32001?

12390032001 is the no-hyphen writing format of 123900-32001. The main part number of this page should remain 123900-32001, and the removed oil pump should still be checked before ordering.

Can 123900-32000 be used as a reference?

123900-32000 and YM123900-32000 may appear as related checking references in aftermarket listings. Final fitment should be confirmed by the old pump, engine model and physical pump configuration.

Which engine models are the main references?

The main engine references are Yanmar 4TNE106, Yanmar 4TNV106 and Komatsu 4D106 / 4D106T. Final confirmation should be based on the old oil pump and engine nameplate.

Which machines can be used as references?

This page uses Takeuchi TL150, Komatsu PC95R-2, PC110R-1, PW95R-2 and PW110R-1 as application references. Final confirmation should be based on the actual engine model and removed oil pump.

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.