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FTE: understand the range before choosing
FTE is a Valeo brand specialising in hydraulic clutch and brake components. Its official clutch programme includes master cylinders, external slave cylinders, concentric slave cylinders, boosters, pipes, hoses and pre-filled systems. The 21 products on this page sit wholly within clutch actuation, making vehicle, fluid and hydraulic-interface identification more important than general brand coverage.
AutoMotoPart currently lists 21 FTE items. The largest FTE groups are 7 central slave cylinder, clutch entries, 7 master cylinder, clutch entries, 3 slave cylinder, clutch entries, 1 clutch actuation system entry. FTE totals can change, so a category count is orientation rather than proof that a particular reference suits a vehicle, workplace or job. The exact FTE listing, its current technical information and the item in front of you must agree.
What the FTE page actually covers
| Product group in this range | Current entries | Selection focus |
|---|---|---|
| Central Slave Cylinder, clutch | 7 | Match master-cylinder bore, material, pushrod, reservoir feed, mounting and outlet connection. |
| Master Cylinder, clutch | 7 | For external slaves, confirm bore, fixing centres, bleed position, pushrod and release interface. |
| Slave Cylinder, clutch | 3 | Identify concentric slave height, bolt pattern, hydraulic connection, bearing face and clutch geometry. |
| Clutch Actuation System | 1 | Confirm exact fluid family; mineral oil and glycol-based brake fluids must not be assumed interchangeable. |
| Clutch Booster | 1 | Check clutch booster supply, mounting, linkage, hydraulic ports and commercial-vehicle application. |
| Clutch Lines | 1 | Match clutch lines by end fittings, routing, length, clips, heat protection and flexible sections. |
| CLUTCH SLAVE CYLINDER | 1 | For complete actuation systems, verify every included piece and whether the assembly is pre-filled. |
Clutch appears in all 21 titles and cylinder in 18. Master and concentric slave cylinders each account for seven products, with three conventional slaves and four line, booster or system entries. Sample data shows bores around 19 to 29 mm, several body materials and explicit mineral-oil descriptions on some masters. Those distinctions show why visual similarity and a broad vehicle lookup cannot complete selection.
Build a reliable shortlist
Map the force path from pedal to release bearing. Identify pedal linkage and switches, master cylinder, reservoir or feed, line and connectors, slave type, release arm or concentric bearing and clutch assembly. Then locate the leak or loss of travel through observation and pressure-safe testing rather than replacing the easiest component first.
| Check | Why it matters | Useful evidence |
|---|---|---|
| Vehicle and transmission | Clutch actuation can change with gearbox, engine and production date | VIN-derived build, transmission code and current FTE application |
| Cylinder geometry | Bore, stroke, pushrod and mount determine displaced volume and travel | Full dimensions, drawing and known-correct removed component |
| Hydraulic connection | Threaded, clipped and quick-release ports use different seals and retention | FTE connection data, line end and locking hardware |
| Fluid type | Wrong fluid can swell or damage seals and contaminate the system | Reservoir marking, vehicle manual and exact FTE fill-medium statement |
| Release design | External slaves and concentric units act on different interfaces | Bellhousing layout and repair drawing |
| Pedal and clutch condition | Hydraulic travel cannot correct worn linkage or mechanical clutch damage | Pedal inspection, release movement and clutch diagnosis |
Cross-reference numbers are useful only after the hydraulic layout agrees. If bore, port or fluid information conflicts with the removed FTE unit, stop. A previous incorrect repair, swapped gearbox or running production change can make the fitted part an unreliable guide.
Master cylinders and pedal input
The FTE master-cylinder entries include cast-iron, aluminium and plastic bodies with different bores. The master must attach correctly to pedal and bulkhead, receive fluid through the intended feed and connect to the hydraulic line without side loading. Inspect clevis, pin, bushes, pedal spring and any clutch-position sensor because lost motion or binding can resemble internal seal failure.
Before removal, protect interior trim and paint from fluid and prevent the reservoir from emptying into shared circuits. Do not grip a plastic body in a vice or alter a pushrod to gain travel. Install new seals and clips supplied or specified for the connection, observe pushrod adjustment rules and ensure the pedal returns fully without preloading the master piston.
External slave cylinders, boosters and lines
An external slave cylinder acts on a release fork or lever and can reveal leakage around its boot, but fluid inside the boot does not identify why seals failed. Check fork travel, alignment, mounting stiffness and line condition. A seized release mechanism or incorrect pushrod can side-load a sound new cylinder and repeat the fault.
The FTE booster and clutch-line entries broaden the hydraulic path, especially for commercial applications. Inspect line clips, chafing, heat exposure and flexible-hose swelling. Match quick connectors and retaining pieces exactly. For a booster, identify hydraulic or pneumatic supplies, linkage and adjustment from the vehicle procedure; stored pressure must be isolated before disconnection.
Concentric slave cylinders inside the bellhousing
A concentric slave cylinder surrounds the gearbox input shaft and usually incorporates the release bearing. Replacement often requires gearbox removal, so confirm the leak and inspect clutch, flywheel, guide surfaces and input-shaft sealing while access is available. Keep clutch friction faces free of hydraulic fluid and cleaning residue.
FTE service guidance warns against squeezing a new CSC and emphasises clean installation, correct seating and even fastener tightening. Do not lubricate seals or bearing guides with a general-purpose product. Align the unit without jamming, use the specified connector and route and never operate the pedal while the slave is unsupported or the gearbox is separated.
Fluid identity, filling and bleeding
The evidence explicitly identifies mineral oil for several FTE master cylinders, while other vehicles may use a specified brake-fluid family. Colour is not reliable identification. Confirm the exact fluid before opening a container and use clean, dedicated equipment. Mixing mineral and glycol fluids can damage seals across the circuit and require more than a simple bleed.
Follow the vehicle's gravity, pressure, vacuum or pedal-assisted bleeding method and any sequence or pressure limit. Keep the reservoir above its minimum, prevent aerated fluid being drawn back and close the bleed point before releasing pressure as directed. Rapid full-stroke pumping can damage some new or dry components; do not improvise beyond the service information.
Post-repair checks and recurring faults
With the vehicle secured and transmission in neutral, check pedal movement, return and hydraulic connections before starting. Look for leaks under sustained pedal pressure where the procedure permits. Confirm clutch disengagement and engagement without gear crunch or vehicle creep, and inspect reservoir level again after air has settled.
A changing bite point, repeated air, discoloured fluid or new noise deserves investigation. Air can enter through a connection without an obvious external drip, while crankshaft or gearbox oil can be mistaken for clutch fluid at the bellhousing. If the clutch remains heavy or drags after hydraulic repair, reassess release geometry, clutch plate, cover, bearing guide and installation rather than increasing pedal travel.
From identification to a checked result
| Stage | Good practice for this range | Mistake to avoid |
|---|---|---|
| Diagnose | Locate fluid loss, air, lost motion or mechanical binding across the system | Replacing the master from pedal feel alone |
| Identify | Record FTE number, bore, ports, fluid, transmission and slave design | Matching only by body shape |
| Prepare | Protect surfaces, support vehicle and gearbox and obtain bleeding data | Opening a pressurised booster or shared reservoir carelessly |
| Install | Keep parts clean, seat evenly and use specified seals, clips and torque | Bench-stroking or squeezing an unsupported CSC |
| Verify | Check pedal, leak integrity, release, level and gear selection | Road testing with uncertain disengagement |
Record the FTE reference, fluid specification, renewed connectors or seals, bleeding method and final pedal or release checks. If the gearbox was removed, retain clutch and flywheel observations. This helps distinguish a future hydraulic leak from an unrelated mechanical clutch problem.
Reading real FTE references
The FTE names below are examples from the current range and show why the complete description matters. They are not universal FTE recommendations and should not be treated as a fitment list. Within FTE, a shared family word can conceal a different dimension, connector, material, pack format, operating condition or installation side.
| Example listing | What to verify beyond the name |
|---|---|
| FTE 2100325 Master Cylinder, clutch | Vehicle, transmission, bore, material, pushrod and master ports |
| FTE 2100525 Master Cylinder, clutch | Slave mount, bore, bleed, pushrod and release-fork geometry |
| FTE 2100628 Master Cylinder, clutch | CSC height, bearing face, bolt pattern, connector and seating |
| FTE 2200020 Master Cylinder, clutch | Fluid family, line fittings, bleed method and pressure limit |
| FTE 2200319 Master Cylinder, clutch | Vehicle, transmission, bore, material, pushrod and master ports |
| FTE 2200422 Master Cylinder, clutch | Slave mount, bore, bleed, pushrod and release-fork geometry |
| FTE 3100225 Slave Cylinder, clutch | CSC height, bearing face, bolt pattern, connector and seating |
| FTE 3102638 Slave Cylinder, clutch | Fluid family, line fittings, bleed method and pressure limit |
Generic titles repeat master cylinder or central slave cylinder across most of the page. The numerical FTE reference and manufacturer application data carry the useful distinction; neither should be separated from vehicle and transmission identification.
Common errors around FTE products
- Choosing an FTE clutch cylinder by vehicle model without confirming gearbox and build data.
- Using bore diameter as the only match while ignoring stroke, ports and pushrod.
- Adding glycol brake fluid to a clutch system specified for mineral oil, or vice versa.
- Reusing damaged quick-connector seals or locking clips.
- Operating a concentric slave cylinder while it is unsupported outside the bellhousing.
- Allowing hydraulic fluid or cleaner onto clutch friction surfaces.
- Bleeding with excessive pressure or rapid full-stroke pumping outside the procedure.
- Driving with unreliable clutch release, leakage or uncertain gear engagement.
FTE questions and answers
Q: What does the FTE range on this page contain?
A: It contains clutch master, conventional slave and concentric slave cylinders, plus a booster, line and actuation system.
Q: What is a clutch master cylinder?
A: It converts pedal input into hydraulic pressure for the clutch-release circuit.
Q: How does a concentric slave differ?
A: It sits around the gearbox input shaft and normally incorporates the release bearing inside the bellhousing.
Q: Can pedal feel identify the failed cylinder?
A: No. Inspect pedal linkage, fluid, lines, master, slave and mechanical release components.
Q: Is clutch fluid always brake fluid?
A: No. Some current FTE records specify mineral oil, so use only the exact vehicle and component fluid requirement.
Q: Can mineral oil and DOT fluid be mixed?
A: No. Treat the systems as incompatible unless exact technical information states otherwise.
Q: Can a new CSC be compressed by hand before fitting?
A: Do not squeeze or stroke it unless the FTE and vehicle procedure expressly instructs you to do so.
Q: Should the clutch be inspected during CSC replacement?
A: Yes. Gearbox access exposes the clutch and related components, which should be assessed by the repair procedure.
Q: Can an external leak be the clutch line?
A: Yes. Inspect pipes, hoses, quick connectors, seals and clips as well as the cylinders.
Q: Why can air return after bleeding?
A: A leaking connection, damaged seal, incorrect procedure or component fault can allow air back into the circuit.
Q: Does a high bite point prove hydraulic failure?
A: No. Clutch wear, adjustment, release geometry and hydraulic condition all need consideration.
Q: What should be recorded after repair?
A: Keep the FTE number, fluid, seals, bleed method, pedal result, leak check and transmission or clutch observations.