1941346301@qq.com
19924579082
Product Overview:
Cummins 4089669 is a DCEC STD piston kit for ISB5.9,QSB5.9, 6BT5.9 and 24V high-pressure common rail engines. Built for medium & heavy-duty applications with outstanding durability and reliability, it adopts reinforced structure and premium surface treatment to resist high combustion pressure, ensure tight sealing, low oil consumption and superior heat resistance. Suitable for heavy pickups, construction machinery, generator sets and commercial vehicles.
4089669 piston kit Specification:
Item
Specification
Part Number
4089669 (STD Piston Kit)
Compatible Engines & Fitment
DCEC 4BT3.9, 6BT5.9, ISB5.9 QSB5.9; 2004.5–2007 Dodge Ram 2500/3500 5.9L
Core Dimensions
Bore 102mm, Stroke 120mm
Compression Ratio
17.3:1
Material
High-silicon cast aluminum alloy
Structure Design
3-ring design, 155° combustion chamber spray angle
Kit Contents
Piston body, ring set, piston pin, circlips
Performance Rating
Rated for 1600 bar fuel pressure; factory power 160–325 HP; max safe upgrade 350–400 HP
Key Features
Hard anodized ring groove, graphite-coated skirt, strict weight tolerance ±5g
Application Scope
Medium & heavy-duty scenarios; not for extreme racing use
Wide Applications:
✅Heavy Pickups: 2004.5–2007 Dodge Ram 5.9L, heavy towing, mild power upgradeable
✅Construction Machinery: Loaders, excavators etc., long-hour dusty high-temp operation
✅Generators: 200–400kW 4BT/6BT units, continuous full-load reliable power
✅Medium/Heavy Trucks: Dongfeng trucks & buses, mountain heavy haulage
Why Choose us?
✅Genuine DCEC quality, perfect fit for direct replacement
✅ Durable construction for long service life
✅ Strict quality control, reliable performance
✅Competitive price & fast delivery
Name: Aandy
Mobile：
Tel：19924579082
Email：1941346301@qq.com
Add：5F, Block 4, Next Industrial Park, 136 Zhongkang Road, Futian Dist, Shenzhen
