Water Outlet Pipe 8-97138003-2 / 1-13713037-0 For ISUZU 6BD1 6BG1 TCM Hitachi EX200 — Aluminum, 0.6 Kg, OEM-Spec

8-97138003-2 1-13713037-0 8971380032 1137130370 Water Outlet Pipe for ISUZU 6BD1 6BG1 TCM Hitachi EX200 — Aluminum Thermostat Seat/Water Pipe, 0.6 kg Net, HS 840999100, OEM Replacement

✅ Product Description

The Water Outlet Pipe with OEM references 8-97138003-2 / 1-13713037-0 (and condensed forms 8971380032 / 1137130370) is a verified replacement cooling-system component for ISUZU 6BD1 and 6BG1 diesel engines, used across TCM applications as well as Hitachi, JCB, , Case, Doosan, and other construction equipment platforms. This component is the coolant discharge outlet at the engine thermostat seat — it provides the passage for coolant to exit the engine after passing through the thermostat, directing it toward the radiator for heat dissipation.-1-16

The unit is manufactured from aluminum (per supplier material specifications), providing excellent thermal conductivity, corrosion resistance, and dimensional stability in the hot coolant environment. It is supplied as a brand-new OEM-specification aftermarket component with a reference net weight of 0.6 kg. The HS code is 840999100, and the packaging quantity is 1 piece per unit.-1-2-19

Key Selection Boundaries — 6BD1/6BG1 Engine Coverage, Aluminum Construction, and Application-Specific Confirmation

1. 6BD1 / 6BG1 Engine Compatibility
   This water outlet pipe is confirmed for ISUZU 6BD1 and 6BG1 diesel engines. It is not a universal ISUZU cooling component — other engine families (4JB1, 4HG1, 4HK1) use different outlet pipe configurations. Confirm the engine code before ordering.-1

2. Aluminum Construction
   The unit is manufactured from aluminum, offering a balance of lightweight construction and thermal performance. Alternate supply channels describe the material as iron (“hierro”) for certain variants — confirm material preference at inquiry if a specific grade is required.-1-19-21

3. Component Naming Variation (Water Outlet Pipe / Thermostat Seat / Thermostat Housing)
   Across different supplier catalogs, this component is variously described as “Water Outlet Pipe” , “Thermostat Seat” (صندلی ترموستات / Thermostat Seat), and “Thermostat Housing”. These terms converge on the same functional component — the housing/seat that holds the thermostat and provides the coolant outlet passage. Confirm the physical form against the original unit.-1-2-15

✅ Verifiable Signal Reinforcement

• ✅ OE Reference Group Verified: 8-97138003-2, 1-13713037-0, 8971380032, 1137130370 are consistently grouped as interchangeable references across multiple supplier catalogs.-1-2-15

• ✅ Engine & Equipment Coverage Verified: ISUZU 6BD1, 6BG1, 4BG1 — confirmed by supplier application data. TCM application confirmed by the dedicated TCM catalog listing. Hitachi EX200-1, EX200-2, EX200-3, EX200-5, EX100-5, EX120-5, EX210, EX225, and additional Hitachi, JCB, Case, Doosan, Denyo, Furukawa, and Aichi equipment — confirmed by compatible equipment lists.-1-16

• ✅ Material Verified: Aluminum — confirmed by Italian and Persian supplier specifications.-1-19

• ✅ Net Weight Verified: 0.6 kg — confirmed by the TCM-specific catalog listing.-2

• ✅ HS Code Verified: 840999100 — confirmed by the TCM catalog data.-2

• ✅ MOQ & Supply Reference: MOQ 1 set; supply capacity 1,000 pcs/month; delivery 2–7 days after payment — confirmed by factory-direct data.-1

• ✅ Warranty Reference: 3 months — confirmed by supplier listing.-1

• ⚠️ Material Inconsistency Across Supply Channels: One Spanish supplier lists the material as iron (“hierro”) for the 8-97138003-2 reference, while Italian and Persian sources confirm aluminum. This may reflect different production batches or supplier-specific material choices. Confirm the material against the original unit or specify material preference at inquiry.-1-21

✅ Failure Symptoms — When to Replace

• Coolant leak at the outlet pipe joint: Visible drips, dampness, or crusty residue (white/pink coolant crust) at the pipe-to-thermostat-housing or pipe-to-hose connection — the most direct sign of a failed gasket, O-ring, or a cracked/corroded pipe.

• Overheating or temperature fluctuation: A restricted or leaking outlet pipe disrupts coolant flow, causing temperature instability under load or during sustained operation.

• Coolant residue on the engine block or under the machine: Dried coolant around the outlet pipe area indicates a slow weep that should be addressed before it becomes a sudden failure.

• Visible corrosion or pitting on the pipe surface: Aluminum components can corrode at the coolant passage edges, eventually leading to pinhole leaks.

• Cracked or deformed pipe: Impact damage or over-torqueing of the mounting bolts can crack the casting or deform the pipe, requiring replacement.

• Restricted coolant flow / collapsed hose: A degraded pipe or a failed internal baffle can restrict flow, reducing cooling efficiency even if no external leak is visible.

Consequence of Ignoring Symptoms
A leaking or restricted water outlet pipe on a 6BD1/6BG1 engine can progress to coolant loss and overheating, risking head gasket failure, cylinder head warping, and liner damage. On a working TCM or Hitachi excavator, or an ISUZU truck in commercial service, a cooling system failure can lead to significant downtime and major engine repair cost — replacement at the first sign of seepage or flow restriction is essential.

• ✅ Vehicle & Equipment Compatibility

  
  

  
  

  Important Fitment Notes

  • Engine code is the first check: This outlet pipe is confirmed for 6BD1 and 6BG1 engines. Confirm the engine code against the machine or vehicle documentation before ordering.

  • Equipment coverage breadth: The same pipe serves TCM, Hitachi, JCB, , Case, Doosan, Denyo, and additional equipment platforms. Provide the equipment model and serial number for final confirmation in mixed-fleet applications.

  • Material preference: Primary supplier data confirms aluminum, while one alternate channel lists iron. Confirm material preference at inquiry if a specific grade is required for the application.

  • Component naming variation: This component is described as Water Outlet Pipe, Thermostat Seat, and Thermostat Housing across different catalogs. Confirm the physical form (pipe with outlet passage vs. full housing) against the original unit.

  ✅ Features & Benefits

  
  

  
  

  Feature	Benefit + Verification Signal
  Confirmed 6BD1 / 6BG1 fitment	Direct application to the core ISUZU diesel engine family used in TCM and construction equipment — verified across multiple supplier catalogs.-1-2
  Aluminum construction	Provides lightweight, corrosion-resistant coolant passage with good thermal conductivity — confirmed by supplier material specifications.-1-19
  0.6 kg compact weight	Facilitates handling and installation, with predictable freight cost — confirmed by TCM catalog data.-2
  Dense cross-reference coverage	8-97138003-2, 1-13713037-0, 8971380032, 1137130370 provide multiple verifiable sourcing paths when the primary reference is constrained.-1-15
  Broad equipment compatibility	One outlet pipe serves TCM, Hitachi, JCB, , Case, Doosan, and additional equipment platforms — reducing inventory complexity for distributors serving mixed construction and commercial vehicle fleets.-16
  Sample-friendly MOQ (1 set) and 2–7 day delivery	Allows workshops to verify fitment and material on a single unit before bulk commitment — confirmed by factory-direct terms.-1

  ✅ Quality Control & Verification

  
  

  
  

  QC Item	Verification Method
  Material confirmation	Verify aluminum (or iron variant) against the ordered specification and original unit
  Sealing surface condition	Visual and dimensional inspection of the pipe-to-housing and pipe-to-hose interfaces
  Coolant passage integrity	Visual inspection for internal obstructions or cracks; pressure-hold test where applicable
  Mounting hole spacing	Gauge verification against the original outlet pipe
  Outlet diameter / hose connection	Measure against the original unit to confirm hose fitment
  Component form	Verify whether the unit is a pipe-only or a housing assembly against the original
  Reference marking	Verify 8-97138003-2 / 1-13713037-0 or 8971380032 / 1137130370 legibility where present

  Because material data varies across supply channels and the component form is described differently across catalogs, confirming the physical form, material, and outlet dimensions on the first sample is strongly recommended before bulk commitment.

  ✅ Installation & Maintenance Recommendations

  IMPORTANT: Cooling system service requires a cold engine and proper coolant handling. Always refer to the ISUZU 6BD1/6BG1 or equipment-specific workshop manual for the application. Improper installation can cause coolant leaks, air locks, and repeat overheating.

  Installation Guidelines — Reference Only

  1. Confirm the required part first: Verify the engine code (6BD1 / 6BG1) and equipment model. Confirm whether the replacement is a pipe-only or housing assembly and that the outlet diameter and mounting points match the original unit.

  2. Cold engine only: Allow the engine to cool fully before opening the cooling system. Drain coolant to a level below the outlet pipe.

  3. Remove the old pipe: Disconnect the coolant hose from the outlet. Unbolt the pipe from the thermostat housing or engine block. Note the orientation and any gaskets, O-rings, or seals.

  4. Clean the mating surface: Remove all old gasket residue and corrosion from the mounting face. A clean, flat surface is essential for a leak-free seal.

  5. Install the new pipe with new seals: Seat new gaskets or O-rings, position the 8-97138003-2 pipe, and insert the mounting bolts. Do not over-torque — the aluminum casting can crack or distort.

  6. Reconnect the hose and refill coolant: Reconnect the coolant hose and tighten the clamp. Refill with the correct coolant mixture and bleed the system according to the equipment or vehicle procedure.

  7. Run and verify: Start the engine, bring it to operating temperature, and check for leaks at the pipe joints. Confirm the temperature gauge stabilizes and the cooling system operates correctly.

  Maintenance Schedule

  • Inspect the outlet pipe and hose connections at every coolant service or every 500 hours (equipment) / 20,000–30,000 km (vehicle) — look for crusty residue or dampness.

  • Replace gaskets and O-rings whenever the pipe is removed — seals are single-use components.

  • Flush coolant according to the manufacturer interval. Degraded coolant accelerates aluminum corrosion.

  • Replace the pipe if the sealing surface is pitted, the outlet is deformed, or a crack is detected — do not attempt to repair a cracked aluminum casting.

  ✅ Packaging & Supply

  • Standard packing: Neutral polywooden packaging / original packaging / customer-specified packaging — confirmed by supplier terms.-1

  • Package contents: 1 × Water Outlet Pipe. Gaskets, O-rings, and mounting hardware are not included unless explicitly stated — confirm at inquiry.

  • Set options: Pipe only (standard) / pipe + gasket/O-ring kit (where available) — specify at inquiry.1

  • Suitable for: ISUZU 6BD1/6BG1 engine repair shops, TCM / Hitachi / JCB / equipment service providers, construction machinery maintenance departments, spare parts distributors, and export wholesalers.