85104134 Injector Copper Sleeve, cross reference 21351717. Made of high-purity copper with superior thermal conductivity. Designed for Volvo D11/D13/D16 and Mack MP7 MP8 heavy-duty trucks. Precisely machined for press-fit installation. Stops coolant leakage, prevents cylinder head corrosion and engine overheating. Perfect replacement for injector overhaul repair.
85104134 injector copper sleeve (also known as injector cup / injector tube) is a critical cylinder head spare part for Volvo and Mack heavy-duty diesel engines. It separates the fuel injector from engine coolant, transfers heat efficiently and protects cylinder head from coolant leakage. Widely used for heavy truck engine overhaul and injector rebuild.
✅ High purity copper, outstanding heat dissipation & corrosion resistance ✅ Precision CNC machining, tight tolerance for press fit ✅ High temperature & high pressure resistant, long service life under heavy load ✅ Fix common problems: coolant leak, cylinder head rust, engine overheating ✅ Protect fuel injector from thermal damage, extend injector service life ✅ Direct replacement for old or damaged copper sleeve
Important Reminder: Please confirm your original part number and engine model before purchase to avoid mismatch. Professional press installation recommended.
