04120‑21736 BELT is a heavy‑duty V‑drive belt for Komatsu heavy‑duty machinery engines. Constructed of premium EPDM rubber with polyester‑cord reinforcement, it provides stable power transmission for fan, water pump and alternator assemblies. It features excellent heat‑resistant and anti‑aging properties to adapt to high‑temperature, heavy‑load working environments at mines and construction sites.
High‑strength EPDM rubber with polyester‑cord reinforcement, heat‑resistant and anti‑aging coating
Condition
Brand New – Genuine
Warranty
6 Months
Packaging
Standard Export Carton
Availability
Generally in stock
Features & Benefits
OEM‑standard heavy‑duty V‑belt designed for Komatsu diesel engine auxiliary drive system
Premium EPDM rubber compound reinforced with high‑tensile polyester inner cords
Outstanding heat‑resistant, oil‑resistant and anti‑ozone performance for high‑temperature engine‑bay working environment
Optimized V‑groove structure reduces slippage and vibration for consistent power transmission
High tensile strength resists repeated cyclic loads for long‑term service life on construction and mine sites
Exact OEM dimensional specifications for direct‑fit replacement during routine equipment maintenance
Strict dimension and anti‑fatigue performance testing completed before shipment
Compatible Machine This heavy‑duty V‑belt is compatible with:
Multiple Komatsu heavy‑duty machinery series If you’re unsure whether this belt fits your machine, simply provide your machine serial number, and our technical team will verify compatibility before shipment.
Applications The 04120‑21736GX V‑belt delivers power for engine fan, water pump, alternator and other auxiliary accessories, widely used in heavy‑duty working scenarios:
Open‑pit mining excavation and ore‑digging projects
Quarry heavy‑load digging and stockpile material handling
Urban infrastructure and large‑scale earth‑moving construction sites
Long‑hour continuous high‑load operation of Komatsu heavy‑duty equipment
Scheduled routine maintenance and worn belt replacement work
Reliable belt performance guarantees normal operation of engine auxiliary assemblies and prevents unexpected equipment shutdown caused by belt fracture or slippage.
Why Choose YLCM? YLCM specializes in supplying genuine Komatsu, CAT, OEM and premium aftermarket spare parts for construction and mining machinery worldwide. We provide:
Genuine Komatsu spare parts including heavy‑duty V‑belts for various heavy‑duty machines
High‑quality aftermarket replacement components with strict pre‑shipment inspection
Competitive factory‑direct pricing without middleman markup
Fast worldwide delivery options
Standard professional export‑grade packaging
Pre‑sales part‑number verification and after‑sales technical support
Extensive export experience serving customers in Russia, Southeast Asia, the Middle East, Africa, and South America
In addition to drive belts, we also supply hydraulic parts, undercarriage parts, engine components, electrical parts, filters, and a full range of heavy‑equipment replacement parts.
Packaging & Shipping Every 04120‑21736GX BELT is professionally packed to ensure safe international transportation. Packaging options include:
Moisture‑proof and dust‑proof protective wrapping
Anti‑extrusion inner packaging to avoid belt bending and deformation
Export‑standard solid carton
Sea freight
Railway transportation
Multimodal logistics solutions
Each belt is properly packaged to avoid extrusion, folding and deformation during long‑distance transit, ensuring arrival in excellent condition.
Request a Quote Looking for the 04120‑21736GX BELT for KOMATSU? Contact YLCM today to receive:
Latest quotation
Delivery lead time
Packing details
Shipping solution
Technical support
OEM part verification
Our experienced sales team will respond promptly with a competitive quotation and professional service tailored to your project requirements.
Frequently Asked Questions
Q: Is this a genuine Komatsu part? A: We can supply both genuine Komatsu original and high‑quality aftermarket versions for 04120‑21736GX, to meet diverse customer needs and budget requirements. Please contact us if you have a specific preference, and we will be happy to assist.
Q: How do I confirm this part is correct for my machine? A: To ensure perfect compatibility, please provide your machine serial number or the original part number to our team. We will verify the match for you promptly.
Q: What is the warranty on this product? A: This product comes with a standard 6‑month warranty against manufacturing defects.
Q: What is the typical shipping time? A: This item is generally in stock. The final lead time will be confirmed when we provide your official quote, based on your destination and shipping method preference.
