ZK6138 WP10.375 Oil Filter and Oil Cooler Parts Sourcing Guide

Engine lubrication maintenance is not limited to replacing engine oil at scheduled intervals. The condition of filtration components, oil cooler parts, seals, gaskets, and fastening hardware can also affect how maintenance work is completed. When several related components need attention, identifying every item before the bus enters the workshop can make the service process more organized.

For the ZK6138 bus equipped with a WP10.375 engine, the Weichai Bus Engines for ZK6138 1012-00497 Oil Filter Assembly, 1012-00519 Oil Filter Element, 1013-00062 Oil Cooler Cover Gasket, 1013-00063 Oil Cooler Core provides a parts reference covering key components on the engine oil filtration and cooling side.

Rather than sourcing the main filter or cooler component first and checking the smaller parts afterward, maintenance teams can prepare the relevant part numbers and one-bus quantities as a complete purchasing list.

Understanding the Oil Filter Assembly

The 1012-00497 Oil Filter Assembly is listed at one piece per bus and serves as one of the main components in this parts combination.

When preparing a replacement, the part number should be confirmed against the specific engine application. Visual similarity between two engine components does not necessarily mean that they are interchangeable, particularly when multiple configurations are involved.

The 1012-00314 Oil Filter Housing Gasket is also listed at one piece per bus. Because the gasket is associated with the filter housing, its condition should be considered whenever the housing is opened or removed.

The 1012-00519 Oil Filter Element is specified at one piece per bus as well. For maintenance planning, the filter element can therefore be recorded alongside the filter assembly rather than treated as a separate purchasing requirement.

Keeping these three references together can simplify procurement for workshops handling several ZK6138 buses.

Why Small Sealing Parts Should Be Included

Major engine components usually attract the most attention during a parts order, but smaller installation components can also determine whether a repair can be completed as planned.

The supplied parts list includes two 9401-09429 O-Rings, eight 1003-00850 Wave Washers, and four 9401-09552 Socket Head Cap Screws per bus.

Another four 9401-09553 Socket Head Cap Screws are listed for the oil cooler-related components. The list also includes one 1002-01547 Sealing Washer and one 9401-08855 Hex Plug per bus.

These parts may occupy very little physical space compared with an oil filter assembly or cooler core, but they should still be checked before installation.

A missing O-ring, washer, gasket, or fastener can prevent the workshop from completing the relevant assembly even if the main replacement component is already available. This becomes more important when parts are being shipped to a remote maintenance location or when multiple vehicles are scheduled for service within a limited period.

Oil Cooler Components and Their Relationship

The oil filter assembly and oil cooler perform different functions, but both belong to the engine's oil management system. When servicing the oil cooler, it is useful to review the complete group rather than focusing only on the component that appears damaged.

The 1013-00063 Oil Cooler Core is listed at one piece per bus. The parts information also specifies one 1013-00062 Oil Cooler Cover Gasket and one 1001-22007 Oil Cooler Cover.

If the cooler core is being replaced, the cover and gasket should be checked at the same time. Removing the cover creates a direct need to verify the condition and compatibility of the gasket and sealing surfaces before reassembly.

This approach can reduce the risk of having the main cooler component ready while an associated gasket or cover is missing from the order.

For maintenance teams, the combination of the oil filter assembly, filter element, cooler core, cover, gasket, and supporting hardware creates a more complete reference for the relevant engine lubrication components.

Main Part Numbers for the ZK6138 WP10.375 Application

Part numbers provide a more precise reference than general terms such as “oil filter” or “oil cooler part.”

For the ZK6138 WP10.375 application, the main references include:

• 1012-00497 — Oil Filter Assembly

• 1012-00519 — Oil Filter Element

• 1013-00063 — Oil Cooler Core

• 1013-00062 — Oil Cooler Cover Gasket

• 1001-22007 — Oil Cooler Cover

The associated parts listed for one bus include:

• 1012-00314 Oil Filter Housing Gasket — 1 piece

• 1003-00850 Wave Washer — 8 pieces

• 9401-09552 Socket Head Cap Screw — 4 pieces

• 9401-09429 O-Ring — 2 pieces

• 9401-09553 Socket Head Cap Screw — 4 pieces

• 1002-01547 Sealing Washer — 1 piece

• 9401-08855 Hex Plug — 1 piece

Recording these references in one purchasing document can help buyers communicate the requirement more clearly to a bus parts supplier.

Why One-Bus Quantities Are Useful

When only one vehicle is being repaired, it may be relatively easy to determine how many parts are needed. Fleet maintenance becomes more complicated when several buses require similar work during the same period.

The one-bus quantities provide a starting point for calculating a larger order.

For example, one ZK6138 WP10.375 bus requires one 1012-00497 Oil Filter Assembly and one 1012-00519 Oil Filter Element according to the supplied parts information. The oil cooler group includes one 1013-00063 Oil Cooler Core, one 1013-00062 Oil Cooler Cover Gasket, and one 1001-22007 Oil Cooler Cover.

If the same maintenance requirement applies to multiple buses, purchasing teams can calculate the corresponding quantity based on the actual number of vehicles.

However, the calculation should always be matched against the maintenance scope. Not every service operation will necessarily require replacement of every component in the list.

Avoid Confusing Similar Component Descriptions

One common issue in spare parts purchasing is relying too heavily on broad component names.

A request for an “engine oil filter” may refer to the complete assembly or only the filter element. Similarly, an “oil cooler part” could refer to the core, cover, gasket, or another associated component.

Using the exact part number avoids much of this ambiguity.

For this application, the distinction between 1012-00497 Oil Filter Assembly and 1012-00519 Oil Filter Element is particularly important. The two components are related, but they are separate items in the parts list.

The same principle applies to the 1013-00063 Oil Cooler Core and 1013-00062 Oil Cooler Cover Gasket. Keeping each item under its own part number makes it easier to verify the order and quantities.

A Better Way to Prepare Fleet Maintenance Orders

A structured parts checklist can help maintenance teams reduce unnecessary follow-up during procurement.

Start by confirming the vehicle model and engine application. In this case, the relevant combination is the ZK6138 bus with the WP10.375 engine.

Next, identify the required component by part number. After that, determine whether the requirement involves the complete assembly, an individual replacement part, or associated installation hardware.

The next step is to calculate quantities according to the actual number of buses scheduled for maintenance.

Finally, review the small components. Gaskets, O-rings, washers, plugs, and screws should be checked before the order is finalized rather than after the main components have arrived.

This method creates a direct connection between the maintenance requirement and the purchasing record.

Checking Sealing Components During Replacement

Whenever an oil filter housing or oil cooler cover is opened, the related sealing components deserve attention.

The 1012-00314 Oil Filter Housing Gasket is listed as one piece per bus, while the oil cooler side includes the 1013-00062 Oil Cooler Cover Gasket.

The relevant O-rings and sealing washers should also be matched against the supplied parts information.

Replacing a gasket or sealing component as part of an appropriate maintenance procedure can help avoid relying on an old sealing part after disassembly. The actual replacement decision, of course, should follow the applicable service requirements and inspection results.

For workshops, preparing these parts in advance is often more convenient than discovering a missing seal after the assembly has already been opened.

Sourcing Related Components as One Requirement

For international bus parts buyers, sourcing several connected components can involve more than simply finding individual products online.

The buyer may need to confirm application compatibility, part numbers, quantities, packaging, and shipping arrangements. When several buses are involved, the order can also contain a mixture of major assemblies and relatively small hardware items.

The Weichai Bus Engines for ZK6138 1012-00497 Oil Filter Assembly, 1012-00519 Oil Filter Element, 1013-00062 Oil Cooler Cover Gasket, 1013-00063 Oil Cooler Core can be used as a reference when preparing a combined requirement for the filtration and oil cooling system.

Providing the bus model, engine model, exact part numbers, and required quantities gives a supplier more information to work with than a general request for “WP10.375 oil parts.”

Working With a Chinese Bus Parts Supplier

Guangzhou Hangji Trading Company Limited has specialized in Chinese bus spare parts since 2000. The company operates a 5,000-square-meter warehouse with more than 30,000 SKUs and a team of over 30 professionals.

Its business covers bus spare parts sourcing, purchasing support, technical communication, and shipment coordination. The company reports more than 25 years of industry experience and works with core suppliers holding IATF 16949:2016 and ISO 9001:2015 certifications.

For international orders, shipping can be arranged through express, air, sea, or combined transportation according to the requirements of the shipment.

For buyers dealing with several related engine components, supplier communication can be more efficient when the request includes the complete part list instead of only the name of the main component.

What to Confirm Before Ordering

A few basic checks can help reduce mistakes when sourcing these ZK6138 engine parts.

1. Confirm the application.
Verify that the parts are intended for the ZK6138 bus and WP10.375 engine configuration.

2. Verify the part numbers.
Check the requested components against maintenance documentation and the existing assembly where appropriate.

3. Confirm the quantity.
Determine whether the order is for one bus or multiple vehicles and calculate the required quantities accordingly.

4. Distinguish assemblies from individual components.
Make sure the requirement for an oil filter assembly is not confused with the requirement for a filter element alone.

5. Review supporting hardware.
Check gaskets, O-rings, washers, screws, plugs, and other associated parts before the order is finalized.

6. Confirm the actual maintenance scope.
Not every repair requires every item in the complete reference list, so the final order should reflect the actual service requirement.

Building a More Complete Parts Purchasing List

The main value of a detailed parts reference is that it turns a general maintenance task into an identifiable procurement requirement.

Instead of searching separately for an oil filter, filter element, oil cooler core, gasket, and supporting hardware, buyers can organize the complete requirement according to the engine application and individual part numbers.

For the ZK6138 WP10.375 engine, the key references include 1012-00497 Oil Filter Assembly, 1012-00519 Oil Filter Element, 1013-00063 Oil Cooler Core, and 1013-00062 Oil Cooler Cover Gasket. The related 1001-22007 Oil Cooler Cover and smaller sealing and fastening components should then be checked according to the actual maintenance task.

This approach can be especially useful for fleet operators because quantities can be calculated from a common one-bus reference while each component remains clearly identified.

Conclusion

Efficient engine maintenance depends on accurate parts identification as well as the physical replacement work. Oil filter assemblies, filter elements, oil cooler cores, covers, gaskets, O-rings, washers, and fasteners all need to be considered according to the actual service requirement.

For ZK6138 buses using the WP10.375 engine, the Weichai Bus Engines for ZK6138 1012-00497 Oil Filter Assembly, 1012-00519 Oil Filter Element, 1013-00062 Oil Cooler Cover Gasket, 1013-00063 Oil Cooler Core provides a practical reference for organizing related oil filtration and cooling components.

By confirming the application, checking exact part numbers, calculating one-bus quantities, and reviewing the supporting sealing and fastening parts, maintenance teams can prepare a more complete purchasing request.

For buyers sourcing these components from China, Guangzhou Hangji Trading Company Limited can support product sourcing, technical communication, and shipping coordination based on the required ZK6138 WP10.375 parts list.

http://www.hjbuspart.com
Guangzhou Hangji Trading Company Limited