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You are here: Home » Products » Engine Parts » Overhaul Kits » Piston Cylinder Liner Kit Overhaul Rebuild Kit ISUZU 4JB1 4JB1T TF TFR TFS JX493Q1 2.8L Diesel Engine High Quality Repair Parts

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Piston Cylinder Liner Kit Overhaul Rebuild Kit ISUZU 4JB1 4JB1T TF TFR TFS JX493Q1 2.8L Diesel Engine High Quality Repair Parts

**4JB1 Engine Overhaul Rebuild Kit — Piston, Cylinder Liner, Piston Rings, Bearings & Full Gasket Set (ISUZU 2.8L Diesel)**

A complete overhaul and reconditioning kit for the ISUZU 4JB1 2.8L diesel engine (non-turbo base; 4JB1T references included in selected listings). The kit contains pistons, cylinder liner, piston rings, bearings, and a full engine overhaul gasket set, available with **square-base or round-base pistons** in **34mm or 31mm piston pin** configurations to match original engine specs. It covers a wide range of applications: **Bobcat loaders (1213, 843, 853, 960, 2060, 2070), Sumitomo excavators (SH60, SK60), ISUZU trucks (NHR, NKR, TF, TFR, TFS, Mustang) and JMC vehicles (493, JX493Q1, light trucks)**. An OEM reference number (8971766850) is provided for cross-checking. The listing also carries Spanish product copy for Latin American markets.
  • 8971766850

  • GL

  • 8971766850

Availability:
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PRODUCT ADVANTAGES

  • Everything in one box — Pistons, cylinder liner, piston rings, bearings and a full gasket set supplied together, so the whole bottom-end overhaul can be completed with a single order.

  • Beyond trucks: construction-equipment coverage — Fits Bobcat loaders and Sumitomo excavators in addition to ISUZU and JMC trucks, opening up a wider buyer base (construction machine owners + auto repair shops).

  • Variant-matched pistons — Square-base and round-base options with 31mm / 34mm pin diameters let buyers order exactly the version matching their original piston, reducing wrong-fit returns.

  • OEM reference for confidence — Number 8971766850 is listed for buyers to cross-check against their original part.

  • Positioned for rebuild & wholesale demand — Built as a complete repair/reconditioning kit for workshops, fleet owners and parts wholesalers with repeat-purchase potential.



4JB1 overhaul (1) 4JB1 overhaul (5) 4JB1 overhaul (17)

FAQs


Q1: What exactly is included in the kit?

Pistons, cylinder liner, piston rings, bearings, and a full engine overhaul gasket set. 


Q2: Which machines does it fit?

Bobcat loaders (1213, 843, 853, 960, 2060, 2070), Sumitomo excavators (SH60, SK60), ISUZU trucks (NHR, NKR, TF, TFR, TFS, Mustang) and JMC vehicles (493, JX493Q1, light trucks) powered by the 4JB1 2.8L diesel. Always confirm the engine model on the nameplate and the OEM number before ordering.


Q3: Which piston variant should I choose — square base or round base, 31mm or 34mm pin?

The listing offers four combinations (Square/34mm, Square/31mm, Round/34mm, Round/31mm). Choose according to the original piston you are replacing; if the piston's base shape and pin diameter are not clear, send a photo or measurements to the supplier for confirmation.


Q4: Is this for the turbo (4JB1T) or non-turbo (4JB1) engine?

The kit is primarily for the 4JB1 non-turbo 2.8L engine; some listing lines also reference the 4JB1T. Verify which engine model your machine uses and confirm the correct kit with the supplier.


Q5: How do I verify the OEM number?

Compare the number on your original part with the listed reference 8971766850. If there is no direct match, confirm fitment with the seller before purchasing.


Q6: Is this OEM or aftermarket?

It is an aftermarket overhaul kit without stated brand or OEM certification. We recommend asking the supplier for material documentation (piston, liner, bearings) and dimensional inspection reports before bulk purchasing.


Q7: Is there a warranty?

No warranty terms are stated in the title. Please confirm the return/exchange policy and quality guarantee with the supplier before ordering.


Model 4JB1T 68KW
Application Vehicle fshing boat machine
Number of Cylinders-Bore*Stroke 4-93mmx102mm
Fuel supply Direct Injection
Displacement 2.771 Liter
Intake Type Turbo
Idle Speed 800±30r/min
Rated output Power/Rev 62kW/3600r/min
Max.Torque/Speed 200Nm/2000r/min
Max. Speed 4200r/min
Min. fuel Consumption 230g/kWh
Cold Starting -20℃
Starting Motor 1 2V/2.8kW
Generator 12V 80A
Oil Capacity 4.5~5 liter
Exhaust Temperature ≤600℃
Fuel Injection Pump NJ-VE4/11F1900L005
Fuel Injection KBAL-P030
Valve Gap 0.40 ℃A( inlet valve and exhaust valve, cooling)
Inlet Valve Open 24.5℃A before top dead center
Inlet Valve Closing 55.5℃CA after bottom dead center
ExhaustValve Open 54℃CA before bottom dead center
Exhaust Valve Closing 26℃A after top dead center
Injection Beginning Angle 16℃CA/0.5
Net Weight 250kg
Size (L*W*H) mm 737x652x700


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