Sitrak C7H engine oil filter

51.05504-0105 OEM Long Life Oil Filter  51.05504-0105 is an original OEM standard long-life cartridge-style oil filter exclusively designed for MAN MC11 and MC13 Euro 5 / Euro 6 diesel engines, cross interchangeable with Donaldson P550563, Knecht OX1231, 6005019830 and other mainstream filter part numbers. As the core protective component of heavy-duty engine lubrication systems, this filter efficiently traps metal wear particles, carbon sludge, oxide residue and fine dust suspended in circulating engine oil during long-hour heavy-load transportation and engineering operation. It maintains stable and consistent lubrication pressure for crankshafts, bearings, pistons and camshaft assemblies, effectively preventing abrasive scratches, premature wear and internal mechanical damage to precision engine parts. Manufactured strictly following MAN original dimensional standards and IATF16949 automotive quality certification, this upgraded long-service filter reduces abnormal engine noise, excessive oil consumption and unexpected breakdowns, greatly extending overall engine service life. Widely compatible with Sinotruk Howo T7H, T5G, Sitrak C7H heavy trucks, MAN TGA/TGS/TGX commercial vehicles, NEOPLAN and TEMSA passenger coaches. Every finished product passes strict burst pressure, high-temperature endurance and precision filtration testing. We offer sufficient spot inventory, private label custom packaging and a 12-month quality warranty, making it a cost-effective aftermarket spare part for global heavy truck parts wholesalers, professional repair centers and large logistics & construction fleet maintenance departments.  Product Material Description: Filter Media: Imported multi-layer gradient composite full-adhesive filter paper, with uniform stable micropores, ultra-large dirt holding capacity, excellent high-temperature resistance and sustained stable filtration precision under heavy operating temperature. Complete Seal Kit: Premium HNBR hydrogenated nitrile rubber gaskets included, resistant to high-temperature engine oil corrosion, low-temperature hardening and aging deformation, realizing full tight sealing to eliminate oil leakage at mounting joints. Upper & Lower End Caps: High-strength reinforced black engineering plastic end covers with integrated molding technology, rigid structure that resists deformation under long-term continuous internal oil pressure impact. Internal Central Support Skeleton: Perforated galvanized steel inner tube, firmly supports the pleated filter media to avoid collapse and distortion caused by instantaneous high oil flow pressure.