- Truck Engines:
- C-10 (S/N: MBJ1-UP; 2PN1-UP; 3CS1-UP; 8YS1-UP)
- C-12 (S/N: CPD1-UP; TME1-UP; MBL1-UP; 9SM1-UP; 1YN1-UP; 2KS1-UP; 9NS1-UP)
- 3126B (S/N: BKD1-UP; 1AJ1-UP; 5GL1-UP; 8YL1-UP; 7AS1-UP; 6PZ1-UP; 7JZ1-UP; 8SZ1-UP)
- 3126E (S/N: G3E1-UP; DPF1-UP; LEF1-UP; CKM1-UP; CRP1-UP; HEP1-UP; 6ZG1-UP; 9SZ1-UP)
- 3176 (S/N: 2YG1-UP; 7LG1-UP)
- 3176B (S/N: 9CK1-UP)
Description of Change: A new top O-ring seal is available for the fuel injectors for the above listed truck engines. The new O-ring seal is designed for a more precise fit than the previous seal. The new O-ring seal is also made from an improved seal material and coating which makes installation easier.
Adaptable To: The 215-3198 O-Ring Seal replaces the former 9X-7557 O-Ring Seal that is used on fuel injectors for C-10, C-12, 3176, and 3176B truck engines. The 237-3800 O-Ring Seal replaces the former 9X-7557 O-Ring Seal that is used on fuel injectors for 3126B and 3126E truck engines.
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| Illustration 1 | g01018959 |
Typical example (1) 215-3198 O-Ring Seal (2) 237-3800 O-Ring Seal | |
Dimensions of the 215-3198 O-Ring Seal provide a more precise fit than the previous 9X-7557 O-Ring Seal. The new dimensions produce the following results:
- Improve resistance to damage during seal installation.
- Improve resistance to damage during engine operation which can result in fuel dilution of the engine oil.
- Improve resistance to loss of sealing force for longer seal life.
- Improve resistance to fuel system pressure and damage from extrusion for longer seal life.
Note: The 215-3198 O-Ring Seal and the 237-3800 O-Ring Seal are not dimensionally interchangeable. The seals should only be used on the truck engines that are described above.In addition, new seal kits for the fuel injectors have been redesigned in order to include the new seal part numbers. The new kits will be direct replacements for the previous kits. Refer to your Parts Manual in order to determine the correct seal kit for your application. Table 1 lists the new part numbers for the kits.
| New Gasket and Seal Kits | |||
| Engine Model | Part Number | Contents | Replaced Kit |
| C-10 C-12 |
224-5797 (1) | 215-3198 119-8784 9X-7317 O-Ring Seals |
193-3325 |
| 3176 3176B |
223-5850 (1) | 215-3198 9X-7722 9X-7317 O-Ring Seals |
- |
| 3126B 3126E |
242-1539 (1) | 237-3800 150-4105 149-5240 148-2903 133-3715 109-3207 O-Ring Seals |
196-6934 224-5358 |
| ( 1 ) | Check SIS Kits or TMI Kits for the latest application information of the gasket kit. |