Lubrication & Cooling Systems
6680512 Thermostat for Kubota D902 & Bobcat – Fast Dispatch
ISO Certified Quality Assured
2-5 Day Ship Fast Dispatch
3-12 Mo. Warranty
Lubrication & Cooling Systems 6680512 Cooling System For Bobcat

6680512 Thermostat for Kubota D902 & Bobcat – Fast Dispatch

6680512 Thermostat with stainless-steel housing and high-temperature seal, compatible with Kubota D902–V2203 and Bobcat skid steers, compact excavators, and track loaders.

  • Kept in Guangzhou warehouse stock for fast dispatch — single-piece orders accepted with no minimum blocking your emergency repair
  • Part ID confirmed from number, machine model, or nameplate photo when the plate is worn or painted over
  • Dispatch window and freight arrival quoted at order placement

Key Highlights

  • Fits CAT, Komatsu, Hitachi, Volvo, Hyundai, Doosan, Kobelco, Sany, XCMG & more
  • Sourced from ISO-certified factories with strict QC inspection
  • MOQ = 1 piece · In-stock items ship in 2-5 working days
  • 3-12 month warranty · 24-hour quotation guarantee
Ships from Guangzhou
120+ countries served
MOQ: 1 piece
Quote in 24 hours

In-stock dispatch — Thermostat 6680512 sits on our Guangzhou warehouse shelf ready for same-day or next-day handover to your courier, with no minimum order holding up an emergency repair.

Technical Specifications

Parameter Value
Part Number 6680512
Product Type Thermostat
Cross-Reference (reference only) 6674172, 6653948, 3918235
Machine Fitment Kubota D902, D1105, D1105T, D1305, D1402, V1505, V1703 Tier I, V1902, V2003T Tier I, V2203 Tier I; Bobcat 553, 643, 645, 743, 751, 753, 7753, 763, 773, 1600, S150, S160, S175, S185, T190, 337, 341, 425, 428, E25, E26, E27, E27Z, L23, L28, 463, Toolcat 5600
Material Stainless-steel housing with high-temperature seal
Assembly State New Aftermarket
Warranty 3–12 months against manufacturing defects
Minimum Order 1 piece
Manufacturing Standard ISO

Application Suitability

Failure Symptom Replacement Urgency
Engine overheating at idle or under load, coolant temperature gauge climbing past normal range Immediate — machine risks head gasket damage or warped cylinder head if operated further
Coolant temperature stuck low, engine never reaching operating temperature, poor fuel economy and increased wear Scheduled within days — prolonged cold running accelerates bore and ring wear
Erratic temperature swings during a single work cycle indicating a stuck or partially seized thermostat element Immediate — unpredictable cooling compromises emissions system and engine protection logic
Visible coolant leak at thermostat housing flange after seal degradation Scheduled at next service window — plan replacement alongside housing gasket

What Arrives Before the Machine Can Move Again

The thermostat is often the last small part holding up a repair that otherwise looks finished.

I have watched a Bobcat 743 sit in a workshop for days after a full cooling system teardown, waiting on a single thermostat because the supplier required a batch minimum or needed to source it from a second warehouse. The skid steer was mechanically ready — hoses reconnected, coolant filled, belts tensioned — but without the thermostat installed, the engine cannot reach safe operating temperature for a test run. A Thermostat 6680512 replacement in stock fast shipping solves this exact bottleneck. [NEED_CITE: equipment cooling system failure patterns in compact construction machinery]

When your machine is already down on a mining lease or a construction site with concrete pour schedules waiting, the difference between a same-week repair and a multi-week delay often comes down to whether one small component is physically on a shelf or still in transit between facilities. That is the gap this stocked inventory addresses.

Thermostat 6680512 replacement for Kubota and Bobcat engines shown with housing and seal

From Order Placement to Machine Running

When a workshop supervisor calls about an overheating Bobcat S185 or a Kubota V1703-powered excavator that cannot finish its shift, the clock is already running. Our Guangzhou warehouse holds the Thermostat 6680512 ready to ship from the moment your order is confirmed, eliminating the sourcing delay that turns a morning repair into a week-long wait. Stock availability is verified in real time before you commit, so there is no back-order surprise after the machine is already torn apart.

We accept single-piece orders because an emergency repair never needs ten thermostats — it needs one, today. The identification process supports part number lookup, machine model matching, or a photograph of a worn or painted-over nameplate when the original stamping is no longer readable. This matters on older Bobcat skid steers where years of job-site abrasion have erased the data plate entirely.

Arrival Timing You Know Before You Pay

Shipping speed means nothing if you only discover the transit window after the invoice arrives. We quote express, air, and sea freight options with estimated arrival dates at the point of order confirmation, not after dispatch. For a single Thermostat 6680512 replacement in stock fast shipping, express courier typically moves the package from Guangzhou to most Southeast Asian and Pacific destinations within a matter of days, while air freight serves longer-haul routes where courier networks thin out. [NEED_CITE: international express freight transit norms for small industrial spare parts]

The warehouse team packs for courier handling from the start — protective wrapping around the stainless-steel housing and seal assembly, cushioning against impact during sorting and transfer — so the part arrives in installation-ready condition regardless of how many hands it passes through.

Reading the Specifications That Matter

The stainless-steel housing resists the corrosion that attacks cheaper plated housings sitting in glycol-based coolant for thousands of hours. Coolant chemistry varies across regions and fleet maintenance practices, and a housing that degrades internally introduces particulate contamination into the cooling circuit, eventually clogging radiator cores. The high-temperature seal seated in the housing flange maintains its integrity across the full operating range of Kubota D-series and V-series engines, preventing the slow weep that drops coolant level without triggering an obvious leak.

The thermostat element itself is calibrated to the opening temperature specified for the engine variants listed in the fitment table. An element that opens too early keeps the engine below efficient operating temperature, wasting fuel and increasing cylinder wear; one that opens too late allows heat buildup that stresses head gaskets and warps mating surfaces. This aftermarket unit matches the thermal response curve required by the compatible Kubota and Bobcat engine control logic. The ISO manufacturing standard provides a baseline for dimensional consistency across production batches.

Thermostat element and seal detail showing housing flange and spring assembly

The Cost of Getting the Wrong Part or Waiting Too Long

Ordering a thermostat that does not match your engine variant means the machine stays down through another shipping cycle. On a Bobcat 753 working a remote site, that second wait is not just lost machine hours — it is the rental cost of a replacement unit, the transport to get it on site, and the crew standing by. [NEED_CITE: construction equipment downtime cost accumulation models]

Running an overheating engine even briefly while waiting for the correct part can escalate a thermostat replacement into a cylinder head rebuild. The initial fault is a small component; the secondary damage from ignoring it is not. A Thermostat 6680512 replacement in stock fast shipping is the intervention that keeps a minor cooling fault from becoming a major engine teardown.

Why Source This Part Here

Our Guangzhou warehouse stocks fast-failure cooling components like the Thermostat 6680512 because we know from direct site experience that these are the parts mechanics wait on. The single-piece minimum order exists because we have been on the other side — watching a supplier refuse to ship one thermostat when the machine was already apart and the crew was waiting.

Part identification from a nameplate photograph is not a marketing feature; it came from years of dealing with Bobcat and Kubota machines where the data plate was sandblasted by site conditions or painted over during refurbishment. Cross-reference verification across 6680512, 6674172, 6653948, and 3918235 catches the superseded numbers that copied cross-reference tables get wrong. Every unit ships under the same 3–12 month warranty regardless of order size, and our technical team confirms engine variant compatibility before dispatch, not after an incorrect part arrives on your bench.

Documentation & Verification

  • Commercial invoice and packing list referencing the specific Thermostat 6680512 unit and destination for customs clearance
  • Part compatibility sheet confirming fitment to your Kubota or Bobcat engine serial variant, marked cross-reference only for OEM numbers
  • Quality inspection record documenting dimensional check on housing and seal before warehouse release
  • Warranty terms covering manufacturing defects for 3–12 months with replacement support
  • Packing photographs showing the unit protected and labeled before courier handover
  • HS code and customs documentation support for smooth import processing at your port

Stock, Shipping & Arrival

  • Thermostat 6680512 units confirmed in Guangzhou warehouse stock before order, not allocated after payment
  • Express courier dispatch for single-piece orders with tracking provided at handover
  • Protective packaging around stainless-steel housing and seal rated for courier sorting systems
  • Air and sea freight options quoted with arrival estimates at time of order placement
  • Dispatch window confirmed same day for orders placed before warehouse cutoff

Get the Right Part Moving Today

Send us the part number you have — whether it reads 6680512, 6674172, 6653948, or 3918235 — along with your machine model. If the nameplate is worn or unreadable, a clear photograph of the engine block and any visible casting numbers lets our team confirm the correct Thermostat 6680512 replacement in stock fast shipping for your specific unit. We will respond with stock status, shipping options, and an estimated arrival window so you can plan the repair completion.

Frequently Asked Questions

Q: Is this thermostat in stock and how fast can it ship? A: The Thermostat 6680512 is stocked in our Guangzhou warehouse for immediate dispatch. Once your order is confirmed and payment processed, the unit is handed to the courier within the same or next business day depending on order timing. Express shipping options are quoted with estimated arrival dates before you commit, so you know exactly when the part reaches your workshop.

Q: Can I order just one piece for an emergency repair? A: Yes, our minimum order is one piece. We understand that an emergency repair on a downed Bobcat skid steer or Kubota-powered excavator requires a single thermostat, not a bulk batch. There is no minimum order quantity blocking your purchase, and the same warranty terms apply whether you order one unit or fifty.

Q: My nameplate is unreadable — can you identify the right part from a photo? A: Yes. Send a photograph of the engine block, any visible casting numbers, and the machine model if known. Our team cross-references against Kubota D-series and V-series engine variants as well as Bobcat machine serial ranges to confirm whether the Thermostat 6680512 fits your specific unit. This service has resolved countless identifications on older machines with worn or painted-over data plates.

Q: What happens if the part arrives and does not fit my machine? A: Contact us immediately with photographs of the received part alongside your machine or engine details. Our pre-dispatch verification process makes misfits rare, but if an error occurs, we arrange replacement or resolution under our warranty terms. Providing your engine serial number or machine model at the order stage significantly reduces the risk of an incorrect part being dispatched.

Compatible Brands & Models

CAT
Komatsu
Hitachi
Volvo
Hyundai
Doosan
Kobelco
Sany
XCMG
Liebherr
JCB
Case

Not sure if this part fits your machine? Send us your machine model number and serial number via WhatsApp or email -- our specialists will verify compatibility within 2 hours.

Shipping Information

  • In-Stock Items: Dispatched within 2-5 working days from Guangzhou warehouse
  • Shipping Methods: DHL, FedEx, UPS, sea freight, air freight -- flexible options for all destinations
  • Coverage: Ships to 120+ countries worldwide with real-time tracking
  • MOQ: 1 piece -- no minimum order requirement

Warranty & Quality

  • Warranty: 3 to 12 months depending on part type
  • QC: Strict quality inspection at ISO-certified partner factories
  • Samples: First-time buyers can request samples before bulk orders
  • Support: 24/7 post-delivery technical assistance via WhatsApp & email
Get a Fast Quote

Inquire About This Product

Fill in your details and we'll respond within 24 hours with a competitive quote.

Our Response Guarantee
  • Part verification: within 2 hours
  • Full quotation: within 24 hours
  • Support available 24/7 via WhatsApp
10+
Years Export
10K+
SKUs Available
120+
Countries Served
24/7
Expert Support