423-01-21140 komatsu engine rubber
423-01-21140 komatsu bulldozer engine pillow
423-01-21140 komatsu engine rubber
423-01-21140 komatsu bulldozer engine pillow

423-01-21140 4230121140 Rear Rubber Engine Mount Transmission Cushion Mounting for Komatsu WA300 WA320 WA350 WA380 WA400

​The part number 423-01-21140 (also listed as 4230121140) refers to a rear rubber engine mount cushion assembly designed for various Komatsu wheel loader models, including the WA300, WA320, WA350, WA380, and WA400 series. This component is essential for reducing engine vibrations and ensuring proper alignment between the engine and transmission.

Part Name: CUSHION ASSEMBLY

Komatsu Part Number: 423-01-21140 / 4230121140

Weight: Approximately 0.510 kg

Application: Engine mounting and transmission support

Compatible Models: Komatsu WA300, WA320, WA350, WA380, WA400 series

Description about Komatsu Rubber Engine Pillow

Key Features of Our Rear Rubber Engine Mount

  • OEM-Grade Compatibility: Fully compatible with Komatsu OEM part number 423-01-21140, ensuring a seamless replacement without modification.

  • Material Engineering: Made from premium, oil-resistant rubber with enhanced durability to handle heavy-duty off-road working conditions.

  • Precision Molding: Manufactured using precision molds for consistent shape and size, guaranteeing a secure fit.

  • Vibration Damping: Reduces engine vibration and protects the transmission system, improving the service life of surrounding components.

  • Temperature Resistance: Performs reliably in both hot and cold environments, suitable for varied working climates across Europe, Asia, and Oceania.

Technical Specifications of 423-01-21140

Feature Details
Part Number 423-01-21140
Application Rear Engine Mount / Transmission Cushion
Compatible Models Komatsu WA300–WA400 Series
Material Oil-resistant NR/SBR/EPDM blend
Hardness 60±5 Shore A (customizable)
Color Black
Temperature Range -40°C to +120°C
Custom Logo Available (MOQ applies)
Package Neutral or branded packaging

Benefits for Your Business

If you’re a B2B buyer, here’s how choosing Y&F for this component benefits your procurement strategy:

  • Consistent Supply for OEM Replacement Needs: We ensure reliable batch production of the 423-01-21140 engine mount so you can plan your inventory with confidence.

  • Custom Branding Available: We offer OEM/ODM customization services — ideal for distributors who rebrand parts for their domestic markets.

  • Competitive Factory Pricing: As a manufacturer based in China with international logistics capabilities, we help you cut costs without compromising on quality.

  • Rapid Response and Documentation: Full support with technical drawings, certifications (ROHS, REACH, ISO), and fast sample approvals.

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Applications: Komatsu Wheel Loaders

This rear engine mount is engineered for the following Komatsu models:

  • Komatsu WA300

  • Komatsu WA320

  • Komatsu WA350

  • Komatsu WA380

  • Komatsu WA400

These wheel loaders are often used in construction, mining, and quarrying industries. As such, any downtime can cost operators thousands in lost productivity. That’s why choosing a trusted supplier for replacement parts like the 423-01-21140 rubber cushion mount is crucial.

For more dimensions details of 423-01-21140 Komatsu Rubber Engine Mounts, Please Contact Us!

More Information

Common Pain Points — Solved

1. Quality Assurance: We understand that buyers like you demand more than just a good price — you need quality assurance. Our factory conducts 100% visual inspections, plus random dynamic load testing to ensure every rubber mount performs as expected.

2. Communication Delays: Unlike other suppliers with slow email responses, we assign a dedicated sales manager to each B2B client. You’ll always have one clear point of contact — no more back-and-forth delays.

3. Shipment Delays: On-time delivery is a top priority. We maintain standard stock for fast-moving parts like 423-01-21140 and offer priority production for urgent orders.

4. Risk of Fake Certificates: We provide verifiable testing and certification reports from third-party agencies. All documentation is transparently shared for your peace of mind.

Your Partner in Rubber Component Solutions

Yingfeng Rubber Products Co., Ltd (Brand: Y&F) is your trusted partner in sourcing engine mountings, anti-vibration rubber parts, and rubber hoses. With over 30 years of experience in OEM rubber component manufacturing, we support industrial machinery distributors, wholesalers, and maintenance service companies worldwide.


Contact Us for a Free Sample or Quotation

Looking to test our quality before bulk purchase? We offer free samples (freight collect) for our rubber mounting products.

📧 Contact Sherrie Zhang
📨 Email: sales@ynfrubber.com
🌐 Website: www.ynfrubber.com

Let us help you enhance your Komatsu spare parts business with reliable and consistent rubber mount supply.

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