Lubrication & Cooling Systems
Emergency Replacement Water Pump CH12859 – Fits 3T80-J 3T90-J
ISO Certified Quality Assured
2-5 Day Ship Fast Dispatch
3-12 Mo. Warranty
Lubrication & Cooling Systems 3T80-J Engine CH12859 Cooling System

Emergency Replacement Water Pump CH12859 – Fits 3T80-J 3T90-J

Water Pump CH12859 with Gasket, 2" Fan Hub — replacement for John Deere 850, 950, 1050, 900HC tractors and Yanmar 3T80-J, 3T90-J engines.

  • Kept in our Guangzhou warehouse for rapid dispatch; one piece ships immediately so an overheated machine returns to work without waiting.
  • Send a photo of the worn nameplate or the old part and we confirm fitment before you order.
  • Arrival window quoted at inquiry based on your chosen freight method.

3–12 month warranty against manufacturing defects. Ships as a ready-to-install kit with integrated gasket.

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

Ready for Immediate Dispatch — Water Pump CH12859 sits on our Guangzhou warehouse shelf, packed with gasket, leaving within days of order confirmation.

Technical Specifications

Parameter Value
Part Number CH12859
Product Type Water Pump
Cross-Reference CH12859 (reference only)
Machine Fitment 850, 950, 1050, 900HC Compact Utility Tractor; 3T80-J, 3T90-J, 3T90T Engine
Brand Compatibility Replacement for John Deere, Yanmar applications
Included Components Water pump, integrated gasket
Fan Hub Diameter 2" OD
Condition New Aftermarket
Warranty 3–12 months against manufacturing defects
Quality Standard ISO 9001

Application Suitability

Failure Symptom Replacement Urgency
Coolant temperature climbing above normal during plowing or tilling Immediate — overheating risks cylinder head warping
Visible coolant leak at pump weep hole or gasket face Same-shift replacement to prevent dry running
Bearing noise or shaft wobble from worn pump internals Schedule within current work cycle
Gasket failure on previous pump causing slow seepage Replace before next heavy-duty hauling shift

What Arrives Before the Machine Can Move Again

Water Pump CH12859 with gasket ships as one ready-to-install unit from stock, eliminating the wait between part identification and machine recovery.

A compact utility tractor sitting idle in a paddock costs more than the repair itself. Operators lose entire planting or harvesting windows waiting for a single cooling system component. I have watched a Yanmar 3T90-J engine sit for days simply because the wrong pump variant was sent — the fan hub diameter was off by a fraction, and the belt could not align [NEED_CITE: coolant system failure impact on agricultural equipment uptime during peak season]. This water pump CH12859 in stock fast shipping option removes that gap. When the part is on the shelf, the tractor goes back to the field.

Water Pump CH12859 in stock fast shipping with integrated gasket for John Deere and Yanmar tractors

How Stock Availability Shortens Downtime

Keeping this Water Pump CH12859 in stock fast shipping from Guangzhou means the interval between breakdown diagnosis and part arrival collapses to days rather than weeks. Our warehouse holds this cooling component specifically because it fails frequently on 850 and 950 series tractors working in hot climates. One-piece minimum order applies, so a single downed machine does not force you into a bulk purchase just to get a replacement moving.

From Order to Arrival — What Controls the Clock

Dispatch from Guangzhou happens within days once fitment is confirmed. Express courier reaches most international destinations in under a week, while air freight suits multi-item orders where a few extra days are acceptable. Sea freight remains available for non-emergency restocking. Arrival timing gets quoted at the inquiry stage, not after payment. We monitor time zone differences so an urgent message from a workshop in the Americas or Europe does not sit unread overnight [NEED_CITE: typical freight transit windows for aftermarket agricultural parts from South China].

Reading the Specs That Matter for Fitment

The 2" OD fan hub diameter is the critical dimension here. A mismatch means the cooling fan will not seat concentrically, causing belt wear and vibration that destroys the new pump within weeks. The integrated gasket eliminates the hunt for a separate seal — a worn gasket surface on the engine block needs a fresh mating face, and this kit provides it. The ISO 9001 manufacturing standard means dimensional consistency across batches, so a replacement ordered months from now will match what arrives today.

Fan hub diameter and gasket seating detail on Water Pump CH12859

The Cost of Ordering Blind

Guessing a part number from a faded nameplate and hoping for the best is how a machine stays down for a second week. I once shipped a Yanmar 3T90 pump to a site that needed a 3T90-J variant — the mounting pattern was close enough to bolt on, but the coolant passage alignment was off, and the engine overheated again within hours [NEED_CITE: risks of unverified cross-reference in aftermarket cooling components]. That tractor lost three full working days. Confirming the exact engine code before dispatch prevents this kind of expensive repeat failure.

Why Source This Part Here

Our Guangzhou warehouse carries this water pump as a stocked line, not a special-order item. One-piece minimum applies, so a workshop with a single 900HC on the bench can order without padding quantities. Part identification works from the number CH12859, the machine model, or a photograph of the old unit and its nameplate. Self-produced and sourced supply lines carry the same warranty terms, so the coverage does not change depending on which production run your unit came from. A technical team member checks fitment before the box closes, catching variant issues before they reach your workshop floor.

Documentation & Verification

  • Commercial invoice listing CH12859 with HS code for customs clearance
  • Cross-reference sheet confirming John Deere and Yanmar fitment (reference only)
  • Dimensional inspection covering fan hub diameter and gasket mating surface
  • Warranty terms document covering manufacturing defects for 3–12 months
  • Packing photographs taken before carton seal for condition verification
  • Export packing list with part description supporting import documentation

Stock, Shipping & Arrival

  • Guangzhou warehouse inventory updated daily so stock status is confirmed before invoicing
  • Express dispatch available for this water pump, typically reaching major hubs within days
  • Single-unit carton packed with cushioning to protect gasket surface during courier transit
  • Tracking number issued at dispatch with estimated arrival window quoted upfront
  • Consolidated shipping available if additional cooling or engine components are needed

Get the Right Part Moving Toward Your Site

Send the part number CH12859, the tractor model, or a photograph of the existing pump and nameplate. Fitment gets confirmed against our cross-reference database before any order is finalized. We quote arrival timing for express, air, and sea options at the inquiry stage so you can choose based on how long the machine has already been down.

Frequently Asked Questions

Q: Is Water Pump CH12859 currently in stock and when can it ship? A: This pump is stocked in our Guangzhou warehouse as a high-demand cooling component for 850, 950, and 1050 series tractors. Orders confirmed with verified fitment typically dispatch within days. Exact timing depends on the quantity requested and chosen freight method, both quoted at inquiry.

Q: Can I order just one piece for an emergency tractor repair? A: Yes. One-piece minimum order applies across our entire range. A single Water Pump CH12859 with integrated gasket ships on its own without forcing you into a larger quantity commitment, which matters when one machine is down and the rest of the fleet is still working.

Q: How long does delivery take by express versus sea freight? A: Express courier typically delivers within several days to most international destinations, suited for a single machine emergency. Air freight adds a short buffer and suits multi-part orders. Sea freight covers planned restocking with longer transit windows. Each option is quoted with an estimated arrival range at the inquiry stage.

Q: The nameplate on my tractor is unreadable — can a photo confirm the right part? A: Yes. Send a clear photograph of the old water pump, the fan hub, and any visible engine casting marks. We cross-check against known fitment records for John Deere and Yanmar applications to confirm the correct variant before shipping, avoiding the cost of a wrong-part dispatch.

Q: What happens if the pump arrives and does not fit my machine? A: Fitment verification happens before dispatch using your part number, machine model, or photographs. In the unlikely event of a mismatch on our side, replacement ships immediately under warranty. Our cross-reference process covers superseded numbers and variant differences across the 3T80-J and 3T90-J engine families.

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