55 mm flat-top piston 8971766550 compatible with the 4HF1 engine in the NPR66 model
- Product Item : 8971766550
- Category： Isuzu Genuine Parts
- Compatibility: 4HF1
- Part name: 55 mm flat-top piston
- Packing type: Isuzu original packing
- Delivery time: 5-8 working days
CATEGORY
SPECIFICATION
Part name
55 mm flat-top piston
Part number
8-97176655-0 / 8971766550
Brand
Isuzu Select Parts
Model
NPR66
Engine model
4HF1
Packing quantity
1 pcs
Weight
1.3kg
Piston Diameter (STD)
Ø112.00 mm (4.409 in)
Overall Length (GL)
94.50 – 94.70 mm
Compression Height (KH)
60.70 – 60.90 mm
Package
Original ISP packing
Delivery time
5-8 working days
Payment Terms
T/T, Western Union, Paypal
Product Design Philosophy
Designed for the 4HF1 engine, this flat-top piston optimizes the 18.5:1 compression ratio to ensure efficient combustion, durability, and reliable performance for the NPR66 truck.
How it works
Flat-top surface directs fuel spray toward combustion chamber center, generating swirl for complete burn. Reciprocates within cylinder to convert fuel energy into mechanical power.
Problems the product can solve
Solves power loss, high fuel consumption, and excessive exhaust smoke caused by worn piston rings, scored cylinder walls, or improper compression in the 4HF1 engine.
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