Need a replacement cylinder head for Cummins ISDe or QSB 6.7 engines? Our OEM 4941496 casting features reinforced valve bridges to prevent cracking. Fits Komatsu and DAF applications. Request a quote!
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The Cummins ISDe / QSB 6.7 cylinder head (OEM: 4941496) is a 24-valve cast iron component designed for Common Rail engines.
It features reinforced valve bridges to prevent thermal cracking and fits equipment including Komatsu excavators and DAF trucks.
In stock for global export.
| Specification | Value |
|---|---|
| Product Type | Cylinder Head (Bare/Loaded) |
| Engine Platform | ISDe / ISBe / QSB 6.7 |
| Valves per Cylinder | 4 Valves (24V Total) |
| Material | High-Grade Alloy Cast Iron |
| Fuel System | Common Rail (HPCR) |
| Injector Bore | Precision Machined |
| OEM Reference | 4941496, 4941495, 5259422 |
| Cross Reference | QSB 6.7 Head, ISBe 24V Head |
| Typical Applications | Komatsu PC300-8, DAF LF45/55 |
| Condition | Brand New Aftermarket |
| Engine Model | Application Field | Typical Equipment Brands & Models |
|---|---|---|
| Cummins QSB 6.7 | Construction & Industrial | Komatsu PC300-8 / PC350-8 Excavators, Hyundai Loaders, Industrial Generators |
| Cummins ISDe / ISBe 6.7 | Automotive (Trucks/Buses) | Dongfeng Trucks, DAF LF45 / LF55 Trucks, King Long Buses |
| PACCAR PX-7 | Trucking | Medium Duty Trucks (Rebadged Cummins ISBe) |
Ruich Value supplies a dedicated range of Cummins cylinder heads, including new aftermarket and remanufactured replacements. Our coverage includes popular engine families such as the 6BT, 6CT, ISDe, ISLe, and ISX series. For a complete catalog of our Cummins engine parts, please contact our sales team.
| Model | Model | Model | Model |
|---|---|---|---|
| NTA855 (Assm) | ISF2.8 | ISX15/QSX15 | 6BTAA |
| K19 (Assm) | ISF3.8 (Assm) | ISLe (Assm) | 6CT/6CT (Assm) |
| 4B/4BT (Assm) | ISDe/QSB/ISB 4.5 | QSL | 6L/6LT (Assm) |
| 6B/6BT (Assm) | ISDe 6.7 / QSB6.7 (Assm) | ISM11 | QSB3.3/B3.3 (Assm) |
| ISB6 E3/E3 (Assm) | QSB 5.9L | ISG | ISL/T375 |
| ISBe 5.9 (Assm) | ISC (Assm) |
The most frequent failure is cracking between the intake and exhaust valves (valve bridge cracking). This is caused by the extreme thermal cycling and high cylinder pressures of Common Rail engines. Our replacement 4941496 head uses improved casting alloys and thicker bridge sections to prevent this issue.
Yes, the casting 4941496 is widely used across the Cummins 6.7L platform, including the automotive ISDe/ISBe (Euro 3/4/5) and the industrial QSB 6.7 (Tier 3). However, please confirm if your original head uses top-feed or side-feed injectors, as some variations exist. Contact our team with your ESN (Engine Serial Number) for 100% verification.
We supply both Bare options (casting with guides and seats) and Loaded options (assembled with valves, springs, retainers, and collets). The Loaded option is recommended to ensure factory-level sealing and save machine shop labor time during installation.
Email: [email protected]
WhatsApp/Phone: +86 13889277673
For Any Inquiries, please feel free to contact us, Our sales teams are always glad to support your business