Yimi (Guangzhou) Automotive Parts Co, Ltd
| Payment Terms | T/T |
| 3rd Oil Ring | 4.00 mm |
| Surface Treatment | Chrome Plating / Nitriding / Phosphating |
| Delivery Time | 5-8 Work Days |
| Ring Set Quantity | 4 pistons (16 rings total) |
| Packaging Details | Neutral Package or as customers’ request |
| Bore Diameter | Ø115 mm |
| Supply Ability | 10000 pcs/month |
| Top Ring End Gap | 0.30–0.45 mm |
| Net Weight | Approx. 0.1 kg |
| 1st Compression Ring | 3.00 mm HK (Keystone) |
| Oil Ring End Gap | 0.25–0.40 mm |
| Model Number | 4HG1 4HJ1 |
| Certification | ISO/TS16949 |
| Brand Name | YIMI |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | T/T | 3rd Oil Ring | 4.00 mm |
| Surface Treatment | Chrome Plating / Nitriding / Phosphating | Delivery Time | 5-8 Work Days |
| Ring Set Quantity | 4 pistons (16 rings total) | Packaging Details | Neutral Package or as customers’ request |
| Bore Diameter | Ø115 mm | Supply Ability | 10000 pcs/month |
| Top Ring End Gap | 0.30–0.45 mm | Net Weight | Approx. 0.1 kg |
| 1st Compression Ring | 3.00 mm HK (Keystone) | Oil Ring End Gap | 0.25–0.40 mm |
| Model Number | 4HG1 4HJ1 | Certification | ISO/TS16949 |
| Brand Name | YIMI | Place of Origin | CHINA |
| High Light | Chrome Plated Piston Ring Set ，Ø115 mm Bore Standard Piston Ring Set ，OEM Fit ISUZU Piston Ring Set | ||
Standard Piston Ring Set 8-97219054-0 8972190540 for ISUZU 4HG1 4HG1-T 4HJ1 NPR71 NKR NQR — Verified OEM Fit Ø115 mm Chrome-Plated Ring Set
This piston ring set is a verified direct-fit replacement for ISUZU NPR71 / NKR / NQR71 / NPR66 / NPR70 / NPR75 / ELF trucks and Bogdan A-091 / A-092 buses equipped with 4HG1 / 4HG1-T / 4HJ1 diesel engines. This critical engine sealing component maintains compression, controls oil consumption, and transfers heat from the piston to the cylinder wall.
The piston ring set consists of three rings per piston:
The 4HG1 engine is a 4.57L inline-four direct-injection diesel producing 121 HP at 3,200 rpm and 328 Nm of torque at 1,850 rpm. The ring set is manufactured from high-grade cast iron and alloy steel with chrome-plated, nitrided, or phosphated surface treatments for wear resistance.
Replace the piston ring set when any of these symptoms appear:
| Verification Item | Data / Standard |
|---|---|
| Part Number (Short) | 8-97219054-0 |
| Part Number (Long) | 8972190540 |
| Vehicle Models | ISUZU NPR71 / NKR / NQR71 / NPR66 / NPR70 / NPR75 / ELF |
| Engine Compatibility | 4HG1 / 4HG1-T / 4HJ1 / 4HK1-T |
| Bore Diameter | Ø115 mm |
| Ring Configuration | 3 rings per piston |
| 1st Compression Ring (Top) | 3.00 mm HK (Keystone) |
| 2nd Compression Ring | 2.50 mm |
| 3rd Oil Ring | 4.00 mm |
| Ring Set Quantity | 4 pistons (16 rings total) |
| Top Ring End Gap | 0.30–0.45 mm |
| Oil Ring End Gap | 0.25–0.40 mm |
| Certification | ISO/TS 16949 |
| Type | Number |
|---|---|
| Primary OEM — Short | 8-97219054-0 |
| Primary OEM — Long | 8972190540 |
| Consecutive / Replacement | 8-97105-867-0 / 8971058670 |
| Consecutive / Replacement | 8-98054-995-0 / 8980549950 |
| Consecutive / Replacement | 8-98054-995-1 / 8980549951 |
| Aftermarket Reference | 17915 / SDI10160ZZSTD / TP 32631 / TP 32645 |
| Part Number: | 8-97219054-0 8972190540 |
| Product Name: | Standard Piston Ring Set |
| Car Model: | 4HG1 4HJ1 |
| Condition: | 100% Brand New |
| Origin: | China Mainland |
| Main Market: | Middle East, Asia, Africa, South America, North America & Europe |
Primary Applications:
| Brand | Model | Engine | Years |
|---|---|---|---|
| ISUZU | NPR | 4HG1 / 4HG1-T | 1995–2016 |
| ISUZU | NKR | 4HG1 / 4HG1-T | 1994–2007 |
| ISUZU | NQR | 4HG1 / 4HG1-T | 1996–2016 |
| ISUZU | ELF | 4HG1 / 4HG1-T | 1994–2016 |
Non-ISUZU Applications (Same Platform):
| Brand | Model | Application |
|---|---|---|
| Bogdan | A-091 / A-092 | Bus |
| Chevrolet | W3500 / W4500 | Light Truck |
| GMC | W3500 / W4500 | Light Truck |
| QC Item | Verification Method / Standard |
|---|---|
| Bore Diameter (Ø115 mm) | CMM, 100% inspection |
| Ring Thickness | Micrometer, 100% inspection |
| Ring End Gap | Feeler gauge, 100% inspection |
| Surface Hardness | Hardness tester, batch sampling |
| Material Composition | Spectrometer analysis, batch sampling |
| Chrome Plating Thickness | Coating thickness gauge, batch sampling |
Reference ISUZU 4HG1 Workshop Manual:
Recommended Torque Values:
| Measurement | Specification |
|---|---|
| Top Ring End Gap | 0.30–0.45 mm |
| Oil Ring End Gap | 0.25–0.40 mm |
| Connecting Rod Bearing Bolts | Per ISUZU workshop manual |
| Cylinder Head Bolts | Per ISUZU workshop manual |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller
Year Established:
2005
Total Annual:
8000000-10000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Yimi (Guangzhou) Automotive Parts Co., Ltd. Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd. Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...
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