Lift Cylinder Seal Kit MCFA Family – MB51131173

This lift cylinder seal kit is built for the MCFA-family lift cylinder rebuild, fitting Jungheinrich, Mitsubishi, and Caterpillar lift trucks that share this common cylinder platform. A seal kit bundles the full set of seals needed to rebuild a lift cylinder in one job rather than sourcing individual seals separately.

The kit measures 2.4 inches in its primary dimension and weighs just 0.1 pounds, consistent with a compact set of elastomer or polyurethane seals rather than any metal cylinder hardware. Because the kit covers the complete lift cylinder rebuild, it is intended for use when a cylinder starts showing signs of internal seal wear.

As lift cylinder seals age, they lose their sealing lip through repeated flexing and friction against the cylinder wall, and once that happens the cylinder begins to lose hydraulic pressure internally. This typically shows up as a mast that drifts down under load, slower lift speed, or a truck that cannot hold a raised load at full height. Rebuilding the cylinder with a complete seal kit restores full sealing across all wear points at once rather than chasing individual leaks. This kit fits the MCFA-family cylinder shared across Jungheinrich, Mitsubishi, and Caterpillar trucks.