🔧 Charge Filter – 3608866M91 (OEM AGCO / Massey Ferguson / Challenger / AGCO)

Overview

The 3608866M91 is an OEM hydraulic charge filter used in hydrostatic transmission systems on a range of compact tractors and utility machines. This filter protects the charge pump and hydrostatic circuit by removing debris before oil is pressurized and circulated.

✔ Important: This filter is specific to hydrostatic (HST) systems and is not used on mechanical transmissions.

🚜 Equipment It Fits (By AGCO Parts Book Models)

Massey Ferguson — Compact Tractors

Fits the following compact tractor models when equipped with hydrostatic transmission (HST) :

• MF 1165 Compact Tractor
• MF 1250 Compact Tractor (HST / NON HST) — HST only
• MF 1260 Compact Tractor (HST / NON HST) — HST only
• MF 1433H / 1440 Compact Tractor
• MF 1445 / 1445H Compact Tractor
• MF 1529 / 1532 Compact Tractor (2007–2014)
• MF 1533 / 1540 Compact Tractor
• MF 1547 / 1552 Compact Tractor
• MF 1635 Compact Tractor (2009–2013)
• MF 1643 Compact Tractor (2009–2013)
• MF 1648 / 1652 / 1655 Compact Tractor (2009–2013)

Note: On models listed as “HST / NON HST,” this part only applies to the hydrostatic (HST) versions .

Challenger — Compact Tractors

Applies to the hydrostatic configurations of these models:

• MT265 Compact Tractor (Hydro)
• MT265B / MT275B Compact Tractor (HST models)
• MT265H / MT285H Compact Tractor
• MT285 Compact Tractor (Hydro)
• MT285B / MT295B Compact Tractor (Hydro)

AGCO — Compact Tractors

For AGCO‑branded tractors with hydrostatic drive:

• ST34A / ST41A Compact Tractor
• ST35H / ST40H Compact Tractor
• ST45 Compact Tractor
• ST45H Compact Tractor
• ST47A / ST52A Compact Tractor

🔁 Cross Reference Numbers

• 3608866M91 (AGCO OEM)
• May be referenced in parts books under hydrostatic charge filter assembly depending on model and serial