Parts for your 2010 Mitsubishi Lancer-Cluth slave cylinder

2010 Mitsubishi Lancer cluth-slave-cylinder: what it is, and when it applies

For the 2010 Mitsubishi Lancer, a cluth-slave-cylinder is fitted on manual-transmission variants and is not used on vehicles with the CVT automatic or the TC-SST twin‑clutch transmission. This is supported by Mitsubishi’s Lancer (CY/CZ) Service Manual, Group 21 – Clutch, which details a hydraulic master-and-slave system for manual models, and by the Mitsubishi ASA electronic parts catalogue listing a “clutch release cylinder” for CY2A/CY4A manual trims (and equivalent Evo X GSR 5‑speed). Common AU/NZ parts catalogues also list a replacement slave for 2010 Lancer manuals, while no such part is listed for CVT or SST models (Mitsubishi Motors Service Manual 2008–2011, Mitsubishi ASA EPC, AU/NZ aftermarket catalogues).

On the manual 2010 Lancer, the cluth-slave-cylinder takes hydraulic pressure from the clutch master cylinder and turns it into a push on the release fork, cleanly disengaging the clutch. That means smooth gear changes, a consistent pedal feel, and fewer dramas in stop–start traffic. It’s a small unit bolted to the gearbox bellhousing, with a bleed nipple and a fluid line, and it usually shares the brake fluid reservoir up by the firewall. Keep the correct fluid in it (DOT 3 or DOT 4 as marked on the cap) and it’ll serve for years.

Good servicing habits make a big difference. A quick visual once a month is smart: check for dampness around the slave’s dust boot, the line fittings and the bleed screw, and make sure the fluid level in the reservoir hasn’t crept down. Spongy pedal, difficulty selecting gears at a standstill, a low bite point, or fresh fluid stains on the gearbox are all clues the slave may be on the way out.

• Refresh and bleed the clutch hydraulic fluid about every 2 years (or roughly 40,000 km), more often if the car sees heavy city driving or spirited weekend runs.
• If replacing the slave, match the part to the exact model code (e.g., CY2A/CY4A or Evo X GSR 5‑speed), fit a quality unit, and bleed the system thoroughly. Keep the reservoir topped up while bleeding so you don’t pull air back in.
• After fitting, check pedal free play against the service manual spec and road test for clean engagement and release.

For owners of CVT and SST Lancers: there’s no cluth-slave-cylinder fitted. Those transmissions use different, sealed hydraulic or electro‑hydraulic systems, so clutch hydraulics aren’t part of routine servicing on those cars.

Popular questions about the 2010‑Mitsubishi‑Lancer cluth-slave-cylinder

Where is the cluth-slave-cylinder on a 2010 Lancer manual?
It’s mounted on the gearbox bellhousing and pushes the release fork. Access is typically from the front/side of the transmission, on some trims you’ll reach it from above near the battery tray, others from underneath with the splash shield off. Evo X GSR 5‑speed is similar in principle, though clearances differ.

What fluid should be used in the clutch system?
Use fresh DOT 3 or DOT 4 brake fluid as specified on the reservoir cap. Don’t mix in silicone DOT 5. In most Lancers the clutch shares the brake reservoir, so keeping that topped with the correct fluid looks after the clutch hydraulics as well.

Can a failing slave cylinder damage the clutch?
Indirectly, yes. A leaking or weak slave can cause clutch drag or incomplete release, which overheats the friction surfaces and makes gear changes crunchy. While the external slave on most Lancer manuals is less likely to contaminate the clutch directly, it’s best to sort leaks promptly to protect the clutch and gearbox synchros.