Belt Tensioner 3936202 3917485 | Fast Dispatch for Hyundai Excavator

Dispatch from Stock — Guangzhou warehouse shelves this Belt Tensioner ready for immediate single-piece shipment upon order confirmation.

Technical Specifications

Application Suitability

What Arrives Before the Machine Can Move Again

A confirmed belt tensioner in stock ships within 2–5 working days — the bottleneck is identification, not inventory.

When a Cummins 4BT or 6BT engine goes down on a jobsite, the belt drive system is rarely the first suspect. By the time a technician traces the squeal to a failed tensioner, the machine has already lost a shift. I have handled calls where the excavator sat idle for three days simply because the nameplate was painted over and the old tensioner had no legible marking. Send a clear photo of the worn unit or the engine serial tag, and we confirm whether 3936202 or 3917485 is the correct fit before the quote is issued [NEED_CITE: belt drive failure diagnostic procedures for heavy-duty diesel engines].

The reality is that a Belt Tensioner replacement is a straightforward job — if the right part is on the bench. The delay almost always comes from the back-and-forth of part number verification across model generations.

How Stock and Confirmation Work for This Tensioner

This Belt Tensioner sits on Guangzhou warehouse shelving as a fast-moving belt drive item. Common engine configurations — the 4BT in an R130LC-3 and the 6BT in an R210LC-7 — share the same tensioner footprint across several Hyundai machine generations, so a single stocking position covers a wide repair base. Once a photo or machine model confirms the match, the order enters dispatch on the same cycle.

Freight Options and Arrival Timing at Quote Stage

A single-piece emergency order for this tensioner typically moves by express courier, with arrival timing quoted before payment. For workshops holding two or three machines with approaching belt service intervals, air freight on a small consolidation is practical [NEED_CITE: express freight transit windows for construction parts from South China]. Sea freight is reserved for stocking orders, but for a machine already down, the conversation starts with the fastest route to your dock.

Reading the Spec Sheet for Fitment Confidence

The Cummins engine family covered here — from the 4B3.9 through to the QSL9 CM554 — spans a range of belt drive geometries. The tensioner arm length and pulley diameter must match the specific belt routing of your engine build. An R210LC-7 with a QSB6.7 CM850 may carry a different accessory drive layout than an R180LC-3 on a 6BT, even though both reference the same cross-reference number family. Confirming the engine serial range narrows this down to one correct variant. The 3–12 month warranty covers manufacturing defects, so correct identification at the ordering stage protects both sides.

The Cost of Shipping the Wrong Tensioner

Misidentifying this part is a familiar story in the Pearl River Delta dispatch lanes. An R130LC-3 came in needing a Belt Tensioner, the worn unit had no readable stamp, and the wrong variant shipped based on a copied cross-reference table. The machine sat for another four days while the correct unit was air-freighted. That is not a parts cost problem — it is an idle machine and a missed contract deadline [NEED_CITE: construction equipment downtime cost impact on project schedules]. A photo of the old tensioner arm and pulley, taken before removal, would have prevented the entire delay.

Why Buyers Route This Part Through One Account

Guangzhou warehouse stock on this Belt Tensioner means dispatch does not depend on a supplier placing a production order after yours. Identification runs from part number, machine model, photograph, or a worn nameplate image — whichever is available on the shop floor. The MOQ of one piece means a single emergency repair ships without padding the order. Cross-reference verification covers superseded numbers like 3918944 and 3967188, catching errors that copied tables carry forward. Technical confirmation is available before commitment if the engine serial plate raises a variant question.

Documentation & Verification

• Commercial invoice listing tensioner part numbers and cross-reference for customs clearance
• Compatibility sheet marking OEM numbers 3936202 and 3917485 as reference only
• Dimensional inspection record covering pulley diameter and arm travel before dispatch
• Warranty terms document specifying the 3–12 month coverage scope
• Packing photograph showing protective wrapping for express courier handling
• HS code and export documentation support for single-piece air shipments

Stock, Shipping & Arrival

• Current warehouse availability confirmed at quote stage for this Belt Tensioner
• Express courier delivery window quoted upfront for single-piece emergency dispatch
• Packaging rated for air and express transit to prevent pulley surface damage
• Tracking number issued on collection with arrival confirmation at destination

Getting the Right Tensioner Identified

Send the part number from the old unit, a clear photograph of the tensioner arm and pulley, or a readable image of the engine nameplate. Machine model alone — for example, Hyundai R200W-3 — is often enough to narrow the correct variant. For engines that have been rebuilt, the engine serial plate is the most reliable starting point. Once identified, stock status and estimated arrival are provided before any commitment.

Frequently Asked Questions

Q: Is this Belt Tensioner in stock and when can it ship? A: This tensioner is held in Guangzhou warehouse stock for common Hyundai excavator and Cummins engine applications. Dispatch typically occurs within 2–5 working days after order confirmation. Exact availability is confirmed at the quote stage based on current shelf count, so send your part number or machine model for a real-time check.

Q: What is the minimum order quantity? A: The minimum order is one piece. This supports emergency single-repair situations where a machine is already down and the workshop needs only one Belt Tensioner to complete the job. There is no requirement to pad the order with additional items, though we do support consolidated multi-line orders when needed.

Q: How long does delivery take to my location? A: Delivery timing depends on your location and the freight method selected. Express courier is the standard for single-piece emergency orders and transit windows are quoted before payment. Air and sea freight options are available for larger stocking orders. The estimated arrival date is confirmed at the quote stage alongside the freight cost.

Q: The nameplate is worn — can I send a photo to confirm fitment? A: Yes. Send a clear photograph of the worn tensioner, the engine nameplate, or the machine identification plate. Our technical team cross-checks the image against machine model records and engine serial ranges to confirm whether 3936202 or 3917485 is the correct fit before the order is placed.