Product Specifications:
Engineered to withstand extreme cylinder head temperatures and prevent dangerous coolant-to-fuel cross-contamination, the 11070-Z5504 is a premium aftermarket Injector Copper Sleeve (Tube/Cup). Precision-manufactured specifically for the highly dependable Nissan UD Commercial Trucks and Dumpers powered by the rugged PF6, PE6, and FE6 6-Cylinder diesel engines, this vital sealing component aggressively cures internal coolant leaks, combustion gas blow-by, and critical loss of engine compression under peak freight workloads. By leveraging heavy-duty thermal-conductive copper alloys and precise mechanical tolerances, it guarantees a genuine Direct Drop-in Replacement. Heavy-duty truck mechanics and commercial fleet operators can instantly restore optimal cylinder head sealing and maximum heat dissipation to keep crucial transport logistics strictly on schedule without worrying about fitment issues.
📊 Part Number Cross Reference
(Data verified via global catalog search – Extensive Interchangeability)
| Manufacturer Ref (Standard) | Original Equipment (Nissan / UD Trucks) |
| 11070-Z5504 | 11070-Z5504 / 11070Z5504 |
| [Alternative Replacements] | – |
🚛 Fits Applications (Engine & Vehicle)
(Verified application list)
| Make | Model / Application | Engine Size | Year | Engine Code & Specs |
| Nissan / UD Trucks | Heavy Duty Commercial Trucks, Dumpers | 6.9L – 12.5L | Various | PF6, FE6, PE6 (6-Cyl) |
👨🔧 Tech Notes & Installation Guide (FAQ)
Q: Why should I replace the full set of 6 injector copper sleeves on my PF6 / FE6 engine?
A: Operating a heavy-duty commercial truck with a compromised injector sleeve causes severe coolant leaks and direct fuel cross-contamination. This directly results in catastrophic engine failure such as cracked cylinder heads or seized bearings under heavy hauling payloads, alongside a critical loss of operating power. We highly recommend utilizing our Tiered Pricing to install a fully synchronized set of 6 units to ensure a perfect cylinder head seal across all cylinders and safely restore maximum factory compression.
Q: What ensures a perfect fit and reliability for the 11070-Z5504 copper sleeve?
A: As a critical mechanical sealing component, the 11070-Z5504 is manufactured to precise mechanical tolerances using heavy-duty, thermal-conductive copper alloys. This ensures a pure physical direct fit into the cylinder head bore. It operates as a perfect hardware upgrade, relying on exact metallurgical dimensions to provide a flawless coolant and combustion seal under extreme pressures.
Q: What is the critical cleaning step before installation?
A: Heavy-duty engine overhauls expose the cylinder head bore to extreme carbon buildup and old sealant debris. You must thoroughly flush the cylinder head injector cavities and extract all microscopic metal or carbon remnants before pressing in the new copper sleeve to prevent immediate sealing failure and firmly protect your warranty.
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⚖️ Legal Disclaimer
Part numbers, OE numbers, and brand names mentioned above are for reference and identification purposes only. This product is a compatible aftermarket replacement part and is NOT manufactured, sponsored, or affiliated with the original equipment manufacturers.
