Product Name: Fuel Injection Nozzle Return Hose Reference Part Number: 212-8496, 2128496 Compatible Machine: Caterpillar Excavator CAT 311C 312C 312CL 314C…Description: A Fuel Return Lines Hose Assembly is used to provide a pathway for returning excess fuel from the engine back to the fuel tank. In a fuel injection system, some fuel is unused by the engine and needs to be recirculated to maintain proper fuel pressure and prevent vapor lock.Pos. Part No Qty Parts name Comments 1. 1R-6573 [6] GASKET 2. 113-0363 [6] SUPPORT 3. 154-0489 [6] SEAL-RUBBER 4. 8T-4189M [6] BOLT (M8X1.25X20-MM) 5. 212-8599 [1] PIPE 6. 212-8600 [1] PIPE 7. 212-8601 [1] PIPE 8. 212-8602 [1] PIPE 9. 212-8603 [1] PIPE 10. 212-8604 [1] PIPE 11. 212-8605 [1] PIPE 12. 094-9596 [2] CLAMP 13. 094-9597 [2] CLAMP 14. 5C-9553M[2] BOLT (M6X1X16-MM) 15. 094-9581 [8] CLAMP 16. 6V-7357 M[4] BOLT (M6X1X25-MM) 17. 212-8606 [1] HOSE AS 17A. 094-7235 [1] CAP 17B. 096-0174 [3] CLIP-HOSE 17C. 195-8366 [2] FITTING 17D. 212-8497 [4] HOSE 17E. 195-8369 [4] FITTING 17F. 195-8372 [22] CLIP 17G. 195-8368 [6] HOSE 17H. 212-8607 [1] HOSE 17I. 217-5474 [1] HOSE 18. 7X-0796 [5] LOCKWASHER 19. 6V-8231M [5] NUT (M10X1.25-THD) 20. 193-2702 [1] PIPE 21. 5I-7576 [1] FLANGE 22. 096-9529 [1] SEAL-O-RING 23. 5I-7743 [1] FITTING 24. 125-2983 [1] FITTING 25. 8T-4121 [4] WASHERHARD (11X21X2.5-MM THK) 26. 5I-5108M [2] BOLT (M8X1.25X18-MM) 27. 212-8509 [1] BRACKET 28. 8T-4179M [1] BOLT (M12X1.75X20-MM) 29. 096-2501 [1] LOCKWASHER 30. 212-8499 [4] STUD 31. 5I-8070 [1] PIPE 32. 5I-8058 [1] CONNECTOR 33. 3B-4505 [8] LOCKWASHER 34. 096-2500 [6] LOCKWASHER 35. 239-6605 [1] PLATE 36. 239-6524 [1] CLAMP 37. 8T-4138M [2] BOLT(M6X1X20-MM) 39. 233-1283 [1] CLAMP M METRIC PART