The Delivery Valve 131160-5320 39A is a precision delivery valve assembly used in compatible diesel fuel injection pump systems. It is identified by Zexel part number 131160-5320 and the 39A marking, with Bosch reference number 9 413 610 308 (9413610308) commonly listed as a cross-reference.
The 131160-5320 39A is associated with diesel injection applications for Isuzu and Mitsubishi engine systems, with commonly listed applications including Isuzu 6BG1-T and 6SD1 and equipment such as the Hitachi EX200-5. Because delivery valves are matched to specific injection-pump configurations, the original part number and pump information should always be checked before ordering.
1. What Is the Delivery Valve 131160-5320 39A?
The 131160-5320 39A is a delivery valve assembly installed in compatible diesel fuel injection pumps. It forms part of the pump’s high-pressure fuel delivery section and works with the delivery-valve seat, spring, and other related components.
The delivery valve helps control fuel discharge from the pumping element into the high-pressure fuel line. Its operation also contributes to the pressure conditions and fuel cut-off characteristics required between injection events.
The 39A identification is useful when distinguishing this valve from other delivery-valve versions. Cross-reference catalogs identify different stamped delivery valves with different part numbers, including 37A, 38A, 39A, and 40A. Verify part numbers and pump applications before treating visually similar components as interchangeable.
Part Number and Cross-Reference Information
| Reference | Number |
|---|---|
| Zexel | 131160-5320 |
| Identification | 39A |
| Bosch Reference | 9 413 610 308 |
| Bosch Reference, no spaces | 9413610308 |
| Isuzu Cross-Reference | 1-15641031-0 |
| Mitsubishi Cross-Reference | ME727377 |
| Hino Cross-Reference | 22103-2640A |
Cross-reference numbers are useful for identification, but they should be verified against the original component and injection pump before installation.
2. What Are the Technical Specifications of Delivery Valve 131160-5320?
The most consistently available technical information for the 131160-5320 39A concerns its part number, identification, and cross-reference information. Detailed dimensional and pressure specifications are not consistently published across available supplier sources.
| Parameter | Specification |
| Part Number | 131160-5320 |
| Identification | 39A |
| Bosch Cross-Reference | 9 413 610 308 / 9413610308 |
| Component Type | Delivery valve assembly |
| Fuel System | Compatible diesel injection pump systems |
| Material | Hardened / precision-machined steel |
| Condition | New aftermarket replacement available |
Because different aftermarket manufacturers may use different packaging, quality-control procedures, and product specifications, supplier-specific information such as weight, dimensions, warranty, and MOQ should be confirmed with the seller rather than treated as universal specifications for every 131160-5320 valve.
The most important technical consideration is dimensional and functional compatibility with the original injection-pump assembly.
3. Which Engines and Equipment Use Delivery Valve 131160-5320 39A?
Available application information associates the 131160-5320 39A primarily with Isuzu and Mitsubishi diesel engine systems. Among the commonly listed engine applications are the Isuzu 6BG1-T and 6SD1, with supplier application data also identifying equipment such as the Hitachi EX200-5.
Commonly Listed Applications
- Isuzu 6BG1-T
- Isuzu 6SD1
- Hitachi EX200-5
- Other equipment using an injection pump configured for the 131160-5320 / 39A valve
Some aftermarket listings associate this part number with additional Hitachi or Isuzu-powered equipment. However, application information can vary according to the equipment version, production period, engine configuration, and injection-pump model.
For this reason, an equipment or engine model should be treated as supporting information, not the sole basis for fitment.
Why Does the Injection Pump Matter?
Delivery valves are matched to the injection-pump assembly. Two machines using the same engine family may have different injection-pump configurations and therefore may not use the same delivery valve.
The safest identification sequence is:
Original part number → delivery valve marking → injection pump model → engine/equipment model
This approach helps reduce incorrect orders when several visually similar delivery valves are available.
4. What Is the Function of a 131160-5320 Delivery Valve?
The delivery valve operates in the high-pressure delivery section of a compatible diesel injection pump.
Its main functions include:
- Controlling fuel discharge from the pumping element
- Supporting the required pressure changes during injection
- Helping regulate fuel flow into the high-pressure fuel line
- Contributing to fuel cut-off between injection events
- Working with the delivery-valve spring and seat as part of the pump assembly
Because the delivery valve operates repeatedly under pressure, its sealing and mating surfaces must remain within the required condition.
The delivery valve should be regarded as part of the complete injection-pump system rather than as an isolated component. Problems elsewhere in the pump or fuel system can produce symptoms similar to those of a worn delivery valve.
5. What Are the Symptoms of a Bad Delivery Valve 131160-5320 39A?
A worn, damaged, or contaminated delivery valve may contribute to several fuel-system and engine-performance problems, including:
- Hard starting
- Unstable engine operation
- Irregular fuel delivery
- Poor engine response
- Reduced combustion performance
- Abnormal fuel-system behavior
However, these symptoms are not unique to the delivery valve.
Similar problems can also result from:
- Worn injection-pump components
- Injector problems
- Incorrect injection timing
- Restricted fuel supply
- Air entering the fuel system
- Damaged delivery-valve spring or seat
- Contaminated diesel fuel
What Can Cause Premature Delivery Valve Wear?
Common contributing factors include:
- Fuel contamination – Dirt and abrasive particles can damage precision surfaces.
- Normal operating wear – Repeated pressure cycles gradually affect mating surfaces.
- Poor service cleanliness – Contamination introduced during pump repair can affect precision components.
- Surface damage – Scoring or pitting can interfere with proper sealing.
- Related component wear – A damaged seat, spring, or pumping element can affect delivery-valve performance.
For this reason, replacement should normally follow appropriate inspection or injection-pump testing rather than being based on symptoms alone.
6. How Do You Verify 131160-5320 Compatibility?
Correct identification is particularly important when purchasing a delivery valve because different models can have similar external appearances.
Before ordering a 131160-5320 39A, check the following information.
1. Check the Original Part Number
Look for 131160-5320, the 39A identification, or a documented cross-reference such as 9 413 610 308 / 9413610308.
2. Identify the Injection Pump
If available, record the injection-pump model or identification number. This provides more reliable information than the engine model alone.
3. Compare the Original Component
Compare the replacement with the original delivery valve, paying attention to:
- Overall design
- Seating configuration
- Sealing surfaces
- Spring arrangement
- Relevant dimensions
- Installation position
4. Check Cross-Reference Numbers
Commonly listed reference numbers include:
- 131160-5320
- 39A
- 9 413 610 308
- 9413610308
- 1-15641031-0
- ME727377
- 22103-2640A
5. Confirm the Equipment Application
Use the engine and equipment model as additional identification information.
If the original part number, pump information, and application data do not agree, confirm compatibility with the supplier before ordering.
7. When Should the 131160-5320 Be Inspected or Replaced?
Inspect the delivery valve when you service, rebuild, or diagnose the injection pump for high-pressure fuel-delivery problems.
Important inspection points include:
- Scoring or scratches
- Pitting
- Excessive wear
- Contamination
- Damaged sealing surfaces
- Condition of the delivery-valve seat
- Condition of the spring and related components
When Is Replacement Appropriate?
Replacement may be appropriate when:
- The valve has visible damage
- The sealing surfaces are excessively worn
- The component fails inspection
- The delivery valve is outside the required pump specification
- Contamination has caused component damage
- The injection pump is being rebuilt and the original component is unsuitable for continued service
If the delivery-valve seat, spring, pumping element, injector, or other components wear out, replacing the delivery valve alone may not fix the problem.
A complete inspection is recommended when diagnosing injection-pump performance problems.
8. How Should a 131160-5320 Delivery Valve Be Replaced?
Delivery-valve replacement should be performed by a technician familiar with diesel injection pumps and the service procedure for the specific pump.
A general replacement sequence is:
- Clean the area around the delivery valve before disassembly.
- Remove the high-pressure connection and related components according to the pump manufacturer’s procedure.
- Remove the existing delivery valve and inspect the valve, seat, spring, and mating components.
- Clean the relevant mating surfaces using appropriate injection-system service practices.
- Install the replacement 131160-5320 39A in the correct position and orientation.
- Replace damaged sealing components where required.
- Reassemble the delivery-valve components according to the pump manufacturer’s specifications.
- Check the pump for fuel leakage and correct operation.
- Bleed the fuel system if required by the specific equipment.
- Test engine starting, idle quality, and overall operation.
Do not apply a generic torque specification to the delivery valve. The correct torque and assembly procedure depend on the specific injection-pump design and should be taken from the applicable manufacturer’s service information.
Cleanliness is critical throughout the procedure. Small particles introduced into a precision injection pump can damage mating surfaces or affect fuel-system performance.
9. How Should You Choose a 131160-5320 Aftermarket Replacement?
The 131160-5320 39A is available from aftermarket diesel-parts suppliers as a replacement component.
When selecting an aftermarket valve, buyers should consider more than the part number alone.
Important Selection Factors
- Exact 131160-5320 / 39A identification
- Correct cross-reference information
- Compatibility with the original injection pump
- Precision machining quality
- Condition of sealing and mating surfaces
- Dimensional consistency
- Supplier inspection and testing procedures
- Warranty terms
- Availability for wholesale requirements
A low-cost delivery valve is not necessarily a suitable replacement if its dimensions, materials, or sealing characteristics do not match the requirements of the injection pump.
For distributors, diesel repair shops, pump rebuilders, and equipment-parts suppliers, it is useful to provide the original part number, pump model, engine model, equipment model, and required quantity when requesting a quotation.
New Aftermarket vs. OEM
A new aftermarket replacement should not be presented as an OEM component unless it is actually manufactured and sold as such.
When purchasing from an aftermarket supplier, confirm:
- Whether the component is new aftermarket
- The manufacturer’s quality-control process
- Testing procedures
- Warranty coverage
- Cross-reference accuracy
This information helps buyers evaluate the replacement based on actual product and supplier information rather than brand assumptions.
10. Other Delivery Valve Models And More Reading
If you are comparing different diesel injection pump delivery valves, the following guides provide additional information on specifications, applications, compatibility, and replacement considerations.
- Injection Pump Pressure Valve Delivery Valve A36 131110-5520 9413610586
- Injection Pump Pressure Valve Delivery Valve A69 131110-8820 9413610170
- Delivery Valve 13A 090140-0700 9413610336 138110-0420 for HINO EH700
- Injection Pump Pressure Valve Delivery Valve A28 131110-4720 9413610046
Read more:
- F833 Delivery Valve: Applications, Specifications & Replacement Guide
- F167 Delivery Valve: Technical Specifications, Applications & Replacement Guide
- Injection Pump Delivery Valve A61 131110-8020 9413610351 for Komatsu 6D102
- Injection Pump Delivery Valve A32 131110-5120 9413610069 for Mitsubishi
11. Delivery Valve 131160-5320 39A FAQ
1. What is the part number for the 39A delivery valve?
The main part number is 131160-5320, and the valve is identified as 39A. The commonly listed Bosch cross-reference is 9 413 610 308 / 9413610308.
2. Which engines commonly use 131160-5320?
The 131160-5320 39A is commonly associated with Isuzu 6BG1-T and 6SD1 applications. Supplier listings also identify equipment such as the Hitachi EX200-5. Confirm the application against the injection pump before ordering.
3. Is 131160-5320 a common rail delivery valve?
The available identification information describes 131160-5320 as a delivery valve assembly used in compatible diesel injection pump systems. It should not automatically be classified as a common rail component. The correct fuel-system and pump configuration should be verified before purchase.
4. What numbers cross-reference with 131160-5320?
Commonly listed references include Bosch 9 413 610 308 / 9413610308, Isuzu 1-15641031-0, Mitsubishi ME727377, and Hino 22103-2640A. Cross-reference numbers should be checked against the original component and pump.
5. Can 131160-5320 fit every 6BG1-T or 6SD1 application?
No. An engine model alone does not guarantee compatibility. Different equipment and pump configurations can use different delivery valves. The original part number and injection-pump information should be used for final verification.
6. What are the common symptoms of a 131160-5320 delivery valve problem?
Possible symptoms include hard starting, unstable operation, and irregular fuel delivery. However, these symptoms can also be caused by injectors, injection-pump components, fuel-supply problems, timing issues, or other faults. Proper diagnosis is recommended before replacement.
7. How can I order the correct 131160-5320 replacement?
Provide the 131160-5320 / 39A number, original pump information, and engine or equipment model when available. For wholesale inquiries, also provide the required quantity. This information allows the supplier to check compatibility and availability before shipment.
Looking for New Aftermarket 131160-5320 39A Delivery Valves?
Pioneer Diesel Parts supplies new aftermarket diesel fuel injection components for distributors, diesel repair shops, injection-pump rebuilders, and equipment-parts suppliers.
When requesting a quotation for 131160-5320 39A, provide the original part number, injection-pump model, engine model, equipment model, and required quantity whenever available. This helps confirm compatibility and provide the appropriate replacement before shipment.
Disclaimer
All brand names, trademarks, OEM part numbers, engine models, equipment models, and vehicle names mentioned in this article are used for reference and compatibility identification purposes only. Unless expressly stated otherwise, Pioneer Diesel Parts supplies high-quality aftermarket replacement parts featured on this website. These products are not genuine OEM products, and the respective original equipment manufacturers do not manufacture, affiliate with, endorse, or sponsor them. All trademarks and registered trademarks are the property of their respective owners.