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NN131577 NB131009 Turbocharger Piston Ring RHB31GW-55001GP7NWBRS255A

Aftermarket replacement piston ring (NN131577 NB131009) for RHB31GW-55001GP7NWBRS255A. Reference applications include YANMAR 4JHL-HT(MY65) and ISUZU 4EC1T(VIAL). Verify part number and engine application before ordering.

Orders without stock ship approximately 60 days after ordering. Estimated ship date if ordered today: .

Type Piston Ring On backorder — orders accepted Part # NN131577 NB131009 Models RHB31GW-55001GP7NWBRS255A Packing N/A
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12-Month Warranty Shipping to Canada only. OEM-Grade Quality

This NN131577 NB131009 piston ring is an aftermarket replacement component for the RHB31GW-55001GP7NWBRS255A turbocharger, referenced for YANMAR 4JHL-HT(MY65) and ISUZU 4EC1T(VIAL) applications. Verify your specific engine code and turbo configuration before ordering to ensure correct fitment.

Key Specifications

  • Part Number: NN131577 NB131009
  • Product Type: Piston Ring
  • Turbo Model: RHB31GW-55001GP7NWBRS255A
  • Reference Applications: YANMAR 4JHL-HT(MY65), ISUZU 4EC1T(VIAL), YANMAR AY49
  • Packing: N/A
  • Gross Weight: 0 kg
  • OEM Reference Numbers: Not provided in input

This component is a specific replacement part for the RHB31GW-55001GP7NWBRS255A turbocharger. Buyers should verify the part number NN131577 NB131009 against their specific engine code and turbo configuration to ensure correct identification.

Application & Compatibility

Source application path clues for buyer verification. These are source category/application paths, not confirmed fitment claims:

  • YANMAR > YANMAR MARINE > YANMAR 4JHL-HT(MY65)
  • ISUZU > ISUZU GEMINI 1,5L TD (JT) > ISUZU 4EC1T(VIAL)
  • YANMAR > YANMAR (AY49)

This piston ring is listed for reference applications including YANMAR 4JHL-HT(MY65), ISUZU 4EC1T(VIAL), and YANMAR AY49. These application paths serve as verification clues for B2B buyers and repair shops. Before ordering, cross-check the part number NN131577 NB131009 against your specific engine code and turbo model RHB31GW-55001GP7NWBRS255A. Confirm that the turbo configuration matches your unit to ensure correct component identification. Technical fitment support is available to assist with verification.

Technical Notes

The RHB31GW-55001GP7NWBRS255A turbocharger is a specific component within the YANMAR and ISUZU engine families. This piston ring is a critical sealing element that helps maintain proper compression and oil control within the turbocharger assembly. When replacing this part, inspect the piston bore for scoring, excessive wear, or damage to the ring grooves. Confirm that the ring gap specification matches the manufacturer's requirements for the RHB31GW-55001GP7NWBRS255A unit. Ensure the housing is clean and undamaged before reassembly to prevent future failure. If the turbine or compressor housing shows significant wear, consider replacing the complete turbocharger assembly instead of individual components.

B2B Supply

LeadTurbo supports B2B buyers, repair shops, and distributors with volume pricing and worldwide shipping for this NN131577 NB131009 piston ring. Technical fitment support is available to assist with verifying part numbers, engine codes, and turbo configurations for YANMAR and ISUZU applications. Inquire about bulk orders or specific application verification for the RHB31GW-55001GP7NWBRS255A unit.

Product FAQ

This part is referenced for YANMAR 4JHL-HT(MY65) and ISUZU 4EC1T(VIAL) applications. Verify your specific engine code and turbo model before ordering.

Inspect the piston bore for scoring or excessive wear and confirm the ring gap specification. Ensure the turbocharger housing is clean and undamaged before reassembly.

Oil consumption, smoke from the exhaust, or reduced turbo boost pressure may indicate piston ring wear. Inspect the ring for breakage or excessive clearance.

If the turbine or compressor housing is damaged, or if the CHRA shows significant wear, replacing the complete turbocharger assembly may be more cost-effective than individual parts.

YANMAR and other product, brand and model names are the property of their respective owners and are used for reference and application-lookup only. LeadTurbo is not affiliated with or endorsed by YANMAR.

Compatibility Reference applications include YANMAR 4JHL-HT(MY65), ISUZU 4EC1T(VIAL), and YANMAR AY49. Verify part number, engine code, vehicle application, and turbo configuration before ordering.

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Frequently Asked Questions

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Turbochargers

Complete Turbo Units

Complete turbo units designed for rigorous heavy-duty use where OEM units may fall short.

CHRA Core

CHRA / Core Assemblies

Brand-new compatible CHRA cores — like-new performance at a fraction of replacement cost.

Turbine Wheel

Turbine Wheels & Shafts

Precision-balanced turbine shafts engineered from inside out for superior durability.

Turbine Housing

Turbine Housings

Silicon-molybdenum (Si-Mo) nodular cast iron — engineered for extreme heat resistance.

Compressor Housing

Compressor Housings

OEM-matched geometry and surface finish — advanced casting and machining for perfect fitment.

Bearing Housing

Bearing Housings

Rock-solid platform engineered for high-output rebuilds — the foundation for performance.

Compressor Wheels

Compressor Wheels

Aluminum, stainless steel, or titanium alloys — precision machined for superior responsiveness.

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