Sealed pre-filled clutch master, slave and line for 2002-2008 Ram 1500/2500/3500 manual trucks, so a sinking pedal gets fixed without bleeding on the vehicle.
A clutch pedal that slowly sinks to the floor at a stoplight, a truck that grinds going into first or reverse even with the pedal fully down, or a wet stain running down the bell housing are the three ways a 2002-2008 Dodge Ram manual truck tells you its clutch hydraulics are done. This is a complete pre-bled hydraulic assembly for the gas-engine Ram 1500, 2500 and 3500 with a manual gearbox: master cylinder, reservoir, line and slave cylinder in one sealed unit, filled and bled before it leaves the factory. It is ClutchMax part number CPPS0523 and it replaces Mopar 52110496AA, 52110496AB and 52110496AD, plus aftermarket numbers 5130082100, PS0523, CRS052 and PF9073.
On these trucks there is no clutch cable. When you push the pedal, the pushrod drives a piston in the firewall-mounted master cylinder. That pressure travels through the line to the slave cylinder at the bell housing, and the slave pushes the release mechanism so the pressure plate lets go of the disc. On the 3.7L and 4.7L Ram 1500 the box behind it is the NV3500 five-speed; on the gas 5.7L Ram 2500 and 3500 of 2003-2005 it is the NV4500 five-speed. Either way the gearbox depends on the hydraulics for a full release. If the system loses even a little volume, the disc keeps dragging and the synchros take the abuse.
Chrysler built this as a sealed system. The line is joined to the slave at the factory, and Mopar's own catalog notes say the connection should not be taken apart once it is made. That is why the halves are not sold separately and why the fix is the whole assembly, not a rebuild kit or a bleed.
None of these set a trouble code. They show up as pedal feel and gear clash, so do not let a grinding NV3500 or NV4500 talk you into synchro work before the hydraulics are checked. Worn blocker rings are a real wear item on the NV4500 and we carry an NV4500 synchronizer ring kit for the Ram, but a dragging clutch makes good synchros grind too.
With the engine off, hold the pedal down firmly for 30 seconds. If it creeps toward the floor, the master is bypassing. Then start the truck, hold the pedal to the floor and wait 10 seconds before selecting reverse. If reverse still grinds, the clutch is not releasing. Look at the reservoir level and check under the truck at the bell housing for wet fluid. If the pedal is firm and the clutch releases cleanly but the truck still slips under load, the disc is worn and the hydraulics are not your problem. For a sense of how a hydraulic repair compares to a full clutch or gearbox job, read our guide on automatic vs manual transmission repair cost.
The listing covers 2002-2004 Ram 1500 with the 3.7L V6 or 4.7L V8, and 2003-2008 Ram 1500, 2500 and 3500 with the 5.7L V8, all with a manual transmission. Mopar's catalog shows the current superseding number, 52110496AD, replacing the AA, AB and AC versions and listing the 1500 through 2005, so a 2005 Ram 1500 should be confirmed by VIN. Cummins trucks with the NV5600 or G56 use a different hydraulic assembly and this is not the part for them. The safest check is the number on your old master cylinder; if you cannot read it, send us the year and VIN before ordering. More Ram and NV-series parts are under hard parts.
If the clutch is out at the same time, center the disc with a clutch alignment tool kit and replace the pilot bearing using a slide-hammer pilot bearing puller. On an NV4500 truck with a loose shifter, a shift tower and bushing kit is worth doing while you are under the cab.
| Part number | CPPS0523 |
| Type | Pre-filled, pre-bled master and slave cylinder assembly with hydraulic line |
| Interchange | 52110496AA, 52110496AB, 52110496AD, 5130082100, PS0523, CRS052, PF9073, 136.67621 |
| Fitment | 2002-2004 Ram 1500 3.7L/4.7L; 2003-2008 Ram 1500/2500/3500 5.7L (NV3500 and NV4500 manual) |
| Warranty | 12 months / 15,000 miles |
| Shipping weight | 3.17 lb |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes, 2002-2004 Ram 1500 3.7L and 4.7L manual trucks are listed. The best check is the Mopar number on your old master cylinder (52110496AA, AB, AC or AD). If it is unreadable, send us your VIN.
No. It ships filled and bled as one sealed unit. Do not open any fitting or push the slave rod in during installation, or you will introduce air into a system that was not designed to be bled on the truck.
Not on these trucks. Chrysler supplies the master, line and slave as one assembly, and the line-to-slave connection is not meant to be separated once it is made.
No. Diesel trucks use a different clutch hydraulic assembly. This one is for the gas 3.7L, 4.7L and 5.7L manual trucks listed in the fitment.
Hold the pedal down for 10 seconds with the engine running, then select reverse. If it still grinds and the pedal feels soft or sinks, the clutch is not fully releasing and the hydraulics are the likely cause. If the pedal is firm and release is clean, look at the synchros and the clutch disc.
