All NUTEK oil pumps offer better wear life and minimize clearance changes resulting from varying engine operating temperatures. Cover plates are made of heat-treated, high-grade cast iron. Pump shafts are produced from fatigue resistant, high-strength alloy steel 0479.319 VOLVO:1.526.685 M.Benz:000.260. 07.90 352.180.48.01 343.180.01.01 366.180.03.01 1111810201 3451807401 3521807001 3641810101 3661800401 4031802701 4231800101 3521812201 3451807401 1131810001 1031810001 1171810301 1191810101 6161800101 6161800201 6161800401 1121810020 6011810220