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Luk LMC308 Clutch Master Cylinder
| Brand | Luk LMC308 |
|---|---|
| Fits | Jeep and American Motors · 25 vehicles |
Hydraulic clutch release. Built for modern clutch systems that use fluid pressure instead of mechanical linkage.
Push rod included. Ready for a more complete installation right out of the box.
Backed by LuK's long experience in clutch release system development.
Cross-references Centric Parts 136.63006, Dayco 72308 and Dorman - First Stop CM106439 for the same application. See all 9.
Clutch Master Cylinder for Jeep CJ5/CJ7
The LuK LMC308 clutch master cylinder is a new hydraulic replacement for manual transmission systems on select Jeep CJ5 and CJ7 models. It includes the push rod and installation instructions, and it is supplied without a clutch slave cylinder, pre-filled fluid, or pre-bled system.
Key Features
- New clutch master cylinder for manual transmission service
- Includes push rod for installation
- Installation instructions included
- Supplied without clutch slave cylinder
- Not pre-filled and not pre-bled
- No heat shield included
- LuK part number LMC308
Product Details
LuK has extensive experience in hydraulic clutch release systems, and this clutch master cylinder reflects that focus on complete release-system engineering. The LMC308 is built as a direct replacement for hydraulic clutch master cylinder service on Jeep CJ5 and Jeep CJ7 applications, helping restore clutch pedal hydraulic action in vehicles that rely on a manual transmission setup. This part cross-references Dorman - First Stop CM106439 and Sachs SH5374 for the same application.
Vehicle Fitment
- Fits 1980-1986 Jeep CJ7, N/A
- Fits 1980-1983 Jeep CJ5, N/A
Common Problems This Part Addresses
- Clutch pedal goes to the floor with little or no hydraulic resistance
- Difficulty disengaging the clutch during shifting
- Hydraulic fluid loss at the master cylinder
- Soft, inconsistent, or spongy clutch pedal feel
- Wear-related failure in the original clutch master cylinder
Installation Notes
Use the included installation instructions during replacement. Because this unit is not pre-filled or pre-bled, the hydraulic system must be filled and bled after installation. Verify the push rod connection and inspect the rest of the clutch hydraulic system before returning the vehicle to service. For some Jeep CJ applications, refer to LB122 regarding the plastic pivot on the end of the slave cylinder push rod.
Quality Assurance
LuK, part number LMC308, is backed by the brand’s long-standing experience in hydraulic clutch release systems and complete clutch release system development. This new replacement is built for manual transmission repair on Jeep CJ5 and Jeep CJ7 models.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1986 | Jeep | CJ7 | 4.2L | L6 | N/A | — |
| 1986 | Jeep | CJ7 | 2.5L | L4 | N/A | Refer to LB122 regarding plastic pivot on the end of the slave cylinder push rod. |
| 1985 | Jeep | CJ7 | 2.5L | L4 | N/A | Refer to LB122 regarding plastic pivot on the end of the slave cylinder push rod. |
| 1985 | Jeep | CJ7 | 4.2L | L6 | N/A | — |
| 1984 | Jeep | CJ7 | 2.5L | L4 | N/A | Refer to LB122 regarding plastic pivot on the end of the slave cylinder push rod. |
| 1984 | Jeep | CJ7 | 4.2L | L6 | N/A | — |
| 1983 | Jeep | CJ5 | 4.2L | L6 | N/A | — |
| 1983 | Jeep | CJ5 | 2.5L | L4 | N/A | Refer to LB122 regarding plastic pivot on the end of the slave cylinder push rod. |
| 1983 | Jeep | CJ7 | 4.2L | L6 | N/A | — |
| 1983 | Jeep | CJ7 | 2.5L | L4 | N/A | Refer to LB122 regarding plastic pivot on the end of the slave cylinder push rod. |
| 1982 | Jeep | CJ5 | 4.2L | L6 | N/A | — |
| 1982 | Jeep | CJ5 | 2.5L | L4 | N/A | Refer to LB122 regarding plastic pivot on the end of the slave cylinder push rod. |
| 1982 | Jeep | CJ7 | 4.2L | L6 | N/A | — |
| 1982 | Jeep | CJ7 | 2.5L | L4 | N/A | Refer to LB122 regarding plastic pivot on the end of the slave cylinder push rod. |
| 1981 | Jeep | CJ5 | 2.5L | L4 | N/A | Refer to LB122 regarding plastic pivot on the end of the slave cylinder push rod. |
| 1981 | Jeep | CJ5 | 5.0L | V8 | N/A | — |
| 1981 | Jeep | CJ5 | 4.2L | L6 | N/A | — |
| 1981 | Jeep | CJ7 | 2.5L | L4 | N/A | Refer to LB122 regarding plastic pivot on the end of the slave cylinder push rod. |
| 1981 | Jeep | CJ7 | 5.0L | V8 | N/A | — |
| 1981 | Jeep | CJ7 | 4.2L | L6 | N/A | — |
| 1980 | Jeep | CJ5 | 2.5L | L4 | N/A | — |
| 1980 | Jeep | CJ5 | 4.2L | L6 | N/A | — |
| 1980 | Jeep | CJ7 | 2.5L | L4 | N/A | Refer to LB122 regarding plastic pivot on the end of the slave cylinder push rod. |
| 1980 | Jeep | CJ7 | 5.0L | V8 | N/A | — |
| 1980 | Jeep | CJ7 | 4.2L | L6 | N/A | — |
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