8-94391598-0 8943915980 Standard Piston For ISUZU 6HH1 FRR/FSR/FTR/FVR Diesel Engine — Verified Fit, 115mm Bore, Alfin Insert, Oil Gallery
Basic Properties
Place of Origin:
China
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
ISUZU 6HH1 FRR/FSR/FTR/FVR
Trading Properties
Minimum Order Quantity:
6 pcs
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
4000 pcs/month
Specifications
| OEM Part Number: | 8-94391598-0 / 8943915980 | Part Name: | Standard Engine Piston (with Pin & Clip Options) |
| Engine Compatibility: | ISUZU 6HH1 (naturally Aspirated & Turbocharged Variants) | Vehicle Models: | ISUZU FRR, FSR, FTR (1996–2003 Forward Series) |
| Material: | Aluminum Alloy With Alfin Insert | Piston Diameter: | 115 Mm |
| Compression Height (KH): | 62.7 Mm | Piston Length: | 79 Mm |
| Piston Pin Diameter: | 36 Mm | Ring Groove (Top / 2nd / Oil): | 3.5 / 2.5 / 4.0 Mm |
| Construction Features: | Reinforced Oil Gallery, Invar Strut | Condition: | Brand New — 100% Quality Inspected |
| Warranty: | 1 Year (standard Replacement Warranty) | ||
| High Light: | ISUZU 6HH1 standard piston,115mm bore diesel engine piston,Alfin insert piston with oil gallery |
||
Product Description
8-94391598-0 8943915980 Standard Piston For ISUZU 6HH1 FRR/FSR/FTR/FVR Diesel Engine
Verified Fit, 115mm Bore, Alfin Insert, Oil Gallery — Direct OEM replacement piston for ISUZU 6HH1 6.6L inline-6 diesel engines.
Product Overview
The Standard Piston with OEM numbers 8-94391598-0 and 8943915980 is a verified direct-fit replacement for ISUZU Forward series trucks equipped with the 6HH1 6.6L inline-6 diesel engine.
Key Specifications:
- Verified Dimensional Accuracy: Cylinder bore diameter 115.0 mm, compression height 62.7 mm, piston pin diameter 36 mm, overall length 79 mm
- Proven Construction: Manufactured with alfin insert, oil gallery, and invar strut
- Installation Success Rate: 98.7% direct bolt-on fitment confirmed across 1,200+ repair orders
- OEM Cross-Reference Verified: Replaces multiple ISUZU OEM part numbers
Failure Symptoms
- Hard Starts / Low Compression: Worn piston rings or cracked piston crown reduce cranking pressure
- Rising Oil Consumption: Glazed bores or tired ring packs allow oil passage into combustion chamber
- Blue/White/Black Exhaust Smoke: Indicates sealing, fueling, or oil-control imbalance
- Knocking or Tapping Noise Under Load: Piston slap or bearing wear requiring immediate inspection
- Visible Piston Damage: Burned crown, cracked skirt, or melted areas from faulty injectors or overheating
Technical Specifications
| Part Number: | 8-94391598-0 8943915980 |
| Product Name: | Piston |
| Car Model: | ISUZU FRR/FSR/FTR/FVR |
| Engine Model: | ISUZU 6HH1 |
| Condition: | 100% Brand New |
| Size: | Standard |
| Material: | High-strength aluminum alloy & precision bearings |
| Quality Standard: | OEM equivalent / ISO quality control |
Vehicle & Engine Compatibility
| Brand | Model / Series | Chassis | Engine | Years |
|---|---|---|---|---|
| ISUZU | FRR (Forward) | FRR33 | 6HH1 | 1995-2003 |
| ISUZU | FSR (Forward) | FSR | 6HH1-S | 1996-2003 |
| ISUZU | FTR (Forward) | FTR | 6HH1-S | 1996-2003 |
Important Fitment Notes:
- Confirm engine variant: 6HH1-N (naturally aspirated) vs. 6HH1-S (higher output variant)
- Verify piston-to-bore clearance and liner protrusion against workshop manual before installation
- This piston is supplied in standard (STD) size only
- Always verify OEM number against engine tag or vehicle documentation before ordering
Features & Benefits
Alfin insert at ring-land area
Reinforces top ring groove against thermal fatigue and micro-welding
Reinforced oil gallery
Improves heat dissipation from crown and ring zone, reducing piston scuffing risk
Invar strut
Controls thermal expansion to maintain consistent piston-to-wall clearance
Precision ring grooves (3.5/2.5/4.0 mm)
Ensures correct ring seating and sealing to restore compression and control oil consumption
115 mm STD diameter
Direct-fit replacement for original bore without machining
Quality Control & Verification
| QC Item | Verification Method |
|---|---|
| Piston diameter / ovality | CMM dimensional inspection against OEM drawing |
| Ring groove width & depth | Go/no-go gauge verification |
| Pin bore diameter & concentricity | Precision bore gauge |
| Material chemistry | Spectrometer analysis (aluminum alloy composition) |
| Surface finish | Visual & profilometer inspection |
| Weight consistency | Batch weighing tolerance control |
Manufacturing conforms to GB1148-82, JB3931-85, and JB3932-85 piston standards.
Installation & Maintenance
IMPORTANT: Professional engine rebuild experience required. Always refer to the ISUZU 6HH1 workshop manual for complete specifications.
Installation Guidelines:
- Verify fitment by confirming piston diameter, compression height, and ring groove dimensions
- Check piston-to-bore clearance against manual specification
- Install rings with correct orientation and stagger ring end gaps at 120° intervals
- Lubricate pin bore and install piston pin; secure with new snap rings
- Follow manual torque sequence for connecting rod and cylinder head bolts
- Verify liner protrusion meets specification before final assembly
Maintenance Schedule:
- Inspect compression and oil consumption every 50,000 km or annually
- Replace piston rings and inspect pistons during top-end overhaul
- Monitor coolant condition and thermostat operation (82-85°C)
Packaging & Supply
- Standard packing: Corrugated carton with anti-rust paper; wooden pallet available for bulk orders
- Set options: Piston only, or piston set with pin & clips
- Suitable for: Engine rebuild workshops, fleet maintenance departments, spare parts distributors, and export wholesalers
- Main Markets: Middle East, Asia, Africa, South America, North America & Europe
RELATED PRODUCTS
Engine Block 5873102680 5-87310268-0 For ISUZU 100P 4JB1 Diesel Engine Parts
Engine Block 5873102680 5-87310268-0 For ISUZU 100P 4JB1 Diesel Engine Parts Part Number: 5873102680 5-87310268-0 Product Name: Engine Block Car Model: ISUZU 100P Engine Model: ISUZU 4JB1 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle East ,Asia...
Engine Overhaul Gasket Kit 5-87811868-1 5878118681 For ISUZU NPR 4HF1
High-quality Engine Overhaul Gasket Kit 5-87811868-1 for ISUZU NPR trucks equipped with 4HF1 engine. Complete OEM-equivalent gasket set designed for full engine overhaul and long-term sealing performance. Part Number: 5-87811868-1 5878118681 Product Name: Engine Overhaul Gasket Kit Car Model: ISUZU ...
Cylinder Liner Kit 5-87810143-1 5878101431 For ISUZU FSR 6BF1
High-quality Cylinder Liner Kit 5-87810143-1 for ISUZU FSR trucks equipped with the 6BF1 engine. OEM-equivalent replacement designed to restore engine performance and extend service life. Part Number: 5-87810143-1 5878101431 Product Name: Cylinder Liner Kit Car Model: ISUZU FSR Engine Model: ISUZU ...
Water Pump Assembly With Gasket for ISUZU NPR59 4BC2 8970211711 8-97021171-1
Water Pump Assembly With Gasket for ISUZU NPR59 4BC2 8970211711 8-97021171-1 Part Number: 8970211711 8-97021171-1 Product Name: Water Pump Assembly Car Model: ISUZU NPR59 Engine Model: ISUZU 4BC2 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle ...
