Yimi (Guangzhou) Automotive Parts Co, Ltd
| Vehicle Models | Isuzu NHR6_, NKR6_, NKR7_, NKS7_, NPR6_ |
| Payment Terms | T/T, |
| Engine Compatibility | Isuzu 4JJ1 (3.0L, 4-cylinder, turbo-diesel) |
| Cooling Type | Engine coolant circulation |
| Delivery Time | 5-8 Work Days |
| Installation | Direct OEM replacement |
| Operating Mode | Hydraulic (oil-pressurized) |
| Certifiion | ISO/TS16949 |
| Engine Model | Isuzu 4JJ1 |
| Supply Ability | 10000 pcs/month |
| OEM Part Numbers | 8-98039754-1, 8980397541, 8-98039-754-1 |
| Packaging Details | Neutral Package or as customers’ request |
| Material | High-strength aluminum alloy & precision bearings |
| Model Number | Isuzu D-Max 4JJ1 |
| Brand Name | YIMI |
| Place of Origin | China |
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Product Specification
| Vehicle Models | Isuzu NHR6_, NKR6_, NKR7_, NKS7_, NPR6_ | Payment Terms | T/T, |
| Engine Compatibility | Isuzu 4JJ1 (3.0L, 4-cylinder, turbo-diesel) | Cooling Type | Engine coolant circulation |
| Delivery Time | 5-8 Work Days | Installation | Direct OEM replacement |
| Operating Mode | Hydraulic (oil-pressurized) | Certifiion | ISO/TS16949 |
| Engine Model | Isuzu 4JJ1 | Supply Ability | 10000 pcs/month |
| OEM Part Numbers | 8-98039754-1, 8980397541, 8-98039-754-1 | Packaging Details | Neutral Package or as customers’ request |
| Material | High-strength aluminum alloy & precision bearings | Model Number | Isuzu D-Max 4JJ1 |
| Brand Name | YIMI | Place of Origin | China |
| High Light | OEM Hydraulic Timing Chain Tensioner ，Isuzu 4JJ1 Engine Tensioner ，ISO/TS16949 Certified Tensioner | ||
8-98039754-1 8980397541 Timing Chain Tensioner for ISUZU NHR NKR NPR 4JJ1 3.0L -- OEM
The Timing Chain Tensioner with OEM reference numbers 8-98039754-1 and 8980397541 is a verified direct-fit replacement for a wide range of Isuzu vehicles equipped with the 4JJ1 3.0L diesel engine. This tensioner is a critical component of the engine's timing system, responsible for maintaining proper tension on the timing chain to ensure precise synchronization between the crankshaft and camshaft.
The timing chain tensioner is a hydraulic component that uses engine oil pressure to apply a consistent, self-adjusting force against the timing chain. This ensures the chain remains taut and correctly aligned with the sprockets, preventing slack that could cause the chain to skip teeth or even snap. A worn or failing tensioner can lead to engine rattling, rough running, timing chain noise, and potentially astrophic engine damage.
This OE‑spec replacement tensioner restores proper timing chain tension and engine synchronization. Manufactured to meet or exceed original equipment standards, this hydraulic tensioner delivers reliable performance under demanding operating conditions.
Primary Appliions (Isuzu 4JJ1 Engine):
| Model | Chassis / Series | Notes |
|---|---|---|
| Isuzu D-MAX | TFR, TFS | 3.0 DiTD, 2006-2018 |
| Isuzu NHR | NHR6_ | ELF Platform / Chassis |
| Isuzu NKR | NKR6_, NKR7_ | ELF Platform / Chassis |
| Isuzu NLR | NLR85 | 3.0TD diesel |
| Isuzu NMR | NMR6SE, NMR6WE | 3.0TD diesel |
| Isuzu NPR | NPR6_, NPR85 | 3.0TD diesel |
| Isuzu NLS | NLS85 | 3.0TD diesel |
| Isuzu ELF | NLR, NMR, ELF200, ELF30 | Light-duty truck |
| Industrial | Excavators ZX140W-3, SH120-5, ZX120-5 | Hitachi excavators |
Engine Details:
⚠️ Important: This timing chain tensioner is specifically designed for the Isuzu 4JJ1 engine. It is compatible with both automotive appliions (D-MAX, N-Series trucks) and industrial appliions (Hitachi excavators). The part is equivalent to 8-98039754-0 and MCT1072. Always verify your vehicle's chassis code and original part number before ordering. When in doubt, consult your vehicle's workshop manual or provide your VIN to confirm compatibility.
| Symptom | Description |
|---|---|
| Rattling or clattering noise | Noise from the timing chain area, especially on startup |
| Engine misfire | Incorrect timing due to chain slack or skipped teeth |
| Check engine light | Timing correlation fault codes |
| Rough idle | Unstable engine operation |
| Reduced performance | Loss of power and acceleration |
⚠️ Ignoring a failing timing chain tensioner can lead to:
| Feature | Benefit |
|---|---|
| Hydraulic oil-pressure design | Self-adjusting tensioner -- automatically maintains optimal chain tension without manual adjustment |
| OEM-grade / OE-spec quality | Manufactured to original equipment standards -- ensures perfect fit and reliable performance |
| Direct OE replacement | No modifiions required -- matches factory mounting points and specifiions precisely |
| ISO/TS16949 certified | Consistent quality and reliability -- meets international automotive quality standards |
| Prevents astrophic engine damage | Maintains proper timing chain tension -- protects against chain skip and engine failure |
| Restores engine performance | Eliminates rattling and timing noise -- restores smooth engine operation |
| Comprehensive cross-reference | Matches multiple OEM numbers (8-98039754-1, 8980397541, 8-98039754-0, MCT1072) -- simplifies sourcing |
| Wide appliion range | Fits Isuzu D-MAX, N-Series trucks, ELF, and Hitachi excavators -- versatile for workshops and distributors |
| QC Item | Verifiion Method |
|---|---|
| Dimensional accuracy | Precision inspection against OE blueprint -- ensures proper fit on 4JJ1 engine |
| Hydraulic function | Oil pressure test -- verifies proper tensioning operation |
| Spring tension | Factory-set preload verified -- ensures correct initial tension |
| Material quality | High-grade materials verifiion -- heat and oil resistance |
| ISO/TS16949 certifiion | Manufacturing facility certified to international quality standards |
| Batch traceability | Each production batch documented with quality certifies |
⚠️ IMPORTANT: Timing chain tensioner replacement requires mechanical competence and proper safety precautions. Professional installation strongly recommended.
Installation Guidelines (Reference Isuzu workshop manual for complete steps):
Maintenance Schedule:
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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