ranroswang@hksparkling.com 
+86 138 2341 8469
56B-43-17340 Valve for Komatsu Dump Trucks HD325-7 HD405-7 & Articulated Haulers HM300-1 HM300-2
The 56B-43-17340 Check Valve is a critical one-way flow control component for Komatsu dump trucks HD325-7/HD405-7 and articulated haulers HM300-1/HM300-2, installed in the brake piping (accumulator circuit). It prevents reverse hydraulic oil flow to maintain accumulator pressure, ensuring instant brake response and system safety.
Key Features
· OEM-Matched Precision: Exact thread size (1/2" NPT) and mounting dimensions for Komatsu models—no modification needed.
· High-Strength Construction: Forged carbon steel body with zinc-plated finish; withstands max 35MPa working pressure and -20°C to 100°C temperature range.
· Leak-Proof Sealing: Precision-ground poppet valve with nitrile rubber seal ensures zero reverse flow and long-term tightness.
· Plug-and-Play Installation: Direct thread-in fit with pre-applied thread sealant; reduces replacement time to 30 minutes.
· Corrosion & Wear Resistance: Zinc-plated surface and hardened poppet extend service life to 8,000+ hours in harsh conditions.
Compatible Equipment
· Dump Trucks: Komatsu HD325-7, HD405-7, HD605-7E0, HD785-7, HD465-7.
· Articulated Haulers: Komatsu HM300-1, HM300-2, HM250-2, HM350-2, HM400-2.
· Interchangeable Part Numbers: 56B-43-17340, 56B4317340, 56B-43-17340X.
Thank you for choosing SPARKLING MACHINERY for your check valve needs. The 56B-43-17340 Check Valve is essential for Komatsu’s brake accumulator circuit, ensuring safe and responsive braking. Our valves meet ISO 9001 and Komatsu OEM standards, backed by a 12-month warranty and technical support for installation and troubleshooting.
The SPARKLING MACHINERY NEW 56B-43-17340 Valve Photo:
Why Choose the SPARKLING 56B-43-17340 Check Valve?
- OEM-Grade Performance: Matches Komatsu’s original flow rate (15L/min) and pressure curve, restoring 99%+ brake system responsiveness.
- Long-Lasting Durability: Forged steel body outlasts cast-iron alternatives by 40% in service life.
- Reduced Downtime: Thread-in design and pre-sealed threads cut replacement time; factory-tested for leak-free operation.
- Cost-Effective: 45% lower price than OEM with same quality; reduces maintenance frequency and repair costs.
- Certified Quality: Each unit undergoes 100% pressure testing; CE/RoHS compliant for global market compatibility.
| PART NUMBER | PART NAME | WEIGHT KG | |
| 1 | 230106-00068 | UNIVERSAL SHAFT | 3.7 |
| 2 | 230106-00067 | UNIVERSAL SHAFT | 8 |
| 3 | 130712-00276 | SHAFT ASSY,UNIVERSAL | 15.1 |
| 4 | K9001545 | PLANET CARRIER ASS'Y | 27 |
| 5 | K9001535 | RING GEAR | 9 |
| 6 | K9001536 | PISTON | 4 |
| 7 | K9001541 | DISC, O.CLUTCH | 0.5 |
| 8 | K9001542 | INNER CLUTCH DISK | 0.4 |
| 9 | K9001532 | CARRIER, DISC | 2 |
| 10 | 100502-00048 | CARRIER ASSY | / |
About SPARKLING MACHINERY:
- Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.
Get In Touch:
- Replace your failing ECU confidently. Contact SPARKLING for pricing, lead time, and technical support — restore optimal machine control quickly and reliably.
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📦 Packing
1. Packaging methods: Carton box + Wooden case/Pallet + Anti-rust treatment
2. Export-standard packaging to ensure safety during transportation
3. Custom packaging available upon request
4. Dimensions and weight can be provided for freight calculation
🚚 Shipping
1. Available shipping methods: Sea freight, Air freight, Express delivery (DHL, UPS, FedEx, etc.)
2. LCL (Less than Container Load) and FCL (Full Container Load) options are supported
3. For Russian clients, we can introduce the forwarder agent to you
4. Delivery time: Ships within 1-3 working days after payment (for items in stock)
💳 Payment
1. Accepted methods: T/T, Bank Transfer, PayPal, Alipay, WeChat Pay, Western Union
2. Deposit + balance payment available for large or custom orders
3. Flexible payment options—feel free to contact us for details
📌 Frequently Asked Questions (FAQs)
Q: Which excavator models is this part compatible with?
A: This product is compatible with major brands such as CAT, KOMATSU, HITACHI, and more. Custom specifications are also available.
Q: How can I make sure I’m selecting the correct part?
A: You can send us a photo of the old part, part number, or your excavator model, and we will help you confirm the right match.
Q: Is there a warranty for this product?
A: Yes, we offer a 6-month quality guarantee under normal use.
Get a free quote
We are committed to producing the highest quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.
Sparkling Machinery Co.,Ltd
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Whatsapp: +8613609010879