Forged Steel Engine Camshaft with HRC 56-60 Hardness for ISUZU 6HE1 7.1L Diesel Engine - OEM Direct-Fit Replacement
| Engine Displacement: | 7.1L (435 Cu. In.) | Drive Type: | Gear-driven |
| Material: | Forged Steel (42CrMo / 45#) | Cylinder Configuration: | Inline-6 |
| Cam Lobe Hardness: | HRC 56-60 (High-Frequency Induction Hardened) | Type: | Single Overhead Camshaft (SOHC) |
| High Light: | Forged Steel Camshaft,HRC 56-60 Engine Camshaft,OEM Direct-Fit Diesel Engine Camshaft |
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Engine Camshaft 8-94395758-1 8-98233211-1 8943957581 8982332111 for ISUZU 6HE1 6HE1T 7.1L FSR FRR FTR FVR Truck Diesel Engine — OEM Equivalent Direct-Fit Replacement with Forged Steel Construction
The Engine Camshaft with OEM numbers 8-94395758-1 / 8-98233211-1 / 8943957581 / 8982332111 is a verified direct-fit replacement for ISUZU FSR, FRR, FTR, and FVR F-Series medium-duty trucks equipped with the 6HE1 / 6HE1T 7.1L diesel engine. The camshaft is the core component of the engine valve train system, responsible for driving the intake and exhaust valves with precise timing, directly affecting intake efficiency, exhaust efficiency, and power output.
- Material & Heat Treatment Verified: Manufactured from Forged Steel (42CrMo or 45# forged steel), with cam lobes subjected to high-frequency induction hardening to HRC 56-60, effectively preventing lobe flattening.
- OEM Cross-Reference Verified: Replaces ISUZU OEM numbers 8-94395758-1 / 8-98233211-1 / 8943957581 / 8982332111; adjacent variant numbers include 8-94395758-0 / 8943957580 and 8-94395758-2 / 8943957582.
- Fitment Verified: Direct fit for ISUZU 6HE1 (7.1L, 435 Cu. In., inline-6 turbocharged diesel engine), applicable to FSR, FRR, FTR, FVR models covering 1995–1998.
- Engine Displacement: 7.1L (435 Cu. In.)
- Drive Type: Gear-driven camshaft
- Insufficient engine power — Worn cam lobes reduce valve lift, decreasing intake air volume and combustion efficiency.
- Excessive fuel consumption — Camshaft wear causes valve timing deviation, misaligning fuel injection with intake air.
- Engine noise and valve knocking — Severely worn cam lobes or journals increase valve clearance, producing metallic knocking noise.
- Hard starting or unstable idle — Abnormal camshaft position sensor signal or valve timing misalignment prevents the ECU from correctly controlling ignition and injection.
- Black or white smoke from exhaust — Abnormal valve opening and closing timing causes incomplete combustion.
| Part Number: | 8-94395758-1 8-98233211-1 8943957581 8982332111 |
| Product Name: | Camshaft |
| Car Model: | FSR FRR |
| Engine Model: | 6HE1 |
| Condition: | 100% Brand New |
| Size: | Standard |
| Weight: | Standard |
| Origin: | China Mainland |
| Main Market: | Middle East, Asia, Africa, South America, North America & Europe |
| Package: | Neutral Packing Or Make It As Requested |
| Material: | High-strength aluminum alloy & precision bearings |
| Cooling Type: | Engine coolant circulation |
| Installation: | Direct OEM replacement |
| Quality Standard: | OEM equivalent / ISO quality control |
Primary Applications:
| Brand | Model | Engine | Years |
|---|---|---|---|
| ISUZU | FSR | 6HE1 7.1L | 1995–1998 |
| ISUZU | FRR | 6HE1 7.1L | 1995–1998 |
| ISUZU | FTR | 6HE1 7.1L | 1995–1998 |
| ISUZU | FVR | 6HE1 7.1L | 1995–1998 |
- Before ordering, verify that your original camshaft's lobe lift, journal diameter, and gear mounting position match the product.
- 8-94395758-1, 8-94395758-0, and 8-94395758-2 are adjacent variant numbers for different 6HE1/6HE1T engine configurations.
- Ensure camshaft timing marks are correctly aligned per workshop manual during installation.
- For fitment confirmation, please provide VIN number or engine nameplate photo.
| Feature | Benefit + Verification Signal |
|---|---|
| Forged Steel construction | High strength and fatigue resistance, withstanding repeated loads at high RPM — suited for 6HE1 turbocharged diesel engine conditions. |
| Cam lobes high-frequency induction hardened to HRC 56-60 | Significantly improves cam surface hardness and wear resistance, preventing lobe flattening and extending valve train life. |
| Precision-machined journals | Reduces friction against bearings, lowering abnormal engine noise and internal power loss. |
| OEM direct-fit | Overall dimensions meet OEM specifications, requiring no additional machining, suitable for engine overhaul replacement. |
| 100% factory testing | Every unit undergoes full inspection before shipment, ensuring installation reliability and dimensional accuracy. |
| QC Item | Verification Method |
|---|---|
| Cam lobe hardness | Rockwell hardness test, HRC 56-60 |
| Journal dimensional accuracy | Micrometer measurement against OEM specs |
| Cam lift | Cam lift gauge inspection |
| Journal surface roughness | Surface roughness tester |
| Appearance & surface defects | Visual inspection + magnetic particle inspection |
| 100% factory testing | Piece-by-piece dimensional and visual inspection |
Installation Guidelines (Refer to ISUZU 6HE1 workshop manual for exact specifications):
- Rotate the crankshaft to bring No. 1 cylinder to compression TDC.
- Install camshaft bearing bushings on the cylinder head; apply engine oil to bearing surfaces.
- Install the camshaft into the cylinder head, ensuring alignment with timing marks.
- Install bearing caps in numerical order.
- Tighten bearing cap bolts to specified torque (refer to ISUZU 6HE1 OEM workshop manual for exact torque values).
- Install camshaft timing gear and tighten to specified torque.
- Install rocker arm shaft assembly; adjust valve clearance.
- Install cylinder head cover.
Maintenance Schedule:
- Inspect valve clearance and valve train noise every 40,000 km.
- Inspect camshaft wear at 80,000–100,000 km or upon power loss or abnormal fuel consumption.
- Under normal maintenance conditions, 6HE1 camshafts can exceed 200,000 km service life (varies by operating conditions and maintenance quality).
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