AL‑KO 3/4″ Hydraulic Brake Master Cylinder – For Override Coupling (P/N 313002)

Overview
Restore trailer braking performance with the AL‑KO 3/4″ Hydraulic Brake Master Cylinder (P/N 313002). Designed for use with AL‑KO Hydraulic Conversion Bodies (P/N 610949), this cylinder delivers precision braking force and reliability.

Fitment & Compatibility

• Works with AL‑KO override couplings equipped with hydraulic conversion body

• Features a 3/4″ bore and 60 mm bolt spacing for secure mounting

• Compatible with heavy-towing single-axle trailers and caravan setups

Included Components

• 1 × 3/4″ hydraulic brake master cylinder

• Red plastic filler cap

• Mounting bolt holes with 60 mm spacing

Specifications

• Bore diameter: 3/4″ (19 mm)

• Body: cast alloy with rubber seals

• Fill cap: high-visibility red plastic, removable and replaceable (see P/N 313005)

• Fluid compatibility: DOT 3 or DOT 4 brake fluid

Installation & Tips

• Replace cap if cracked or leaking (part 313005)

• Bleed thoroughly after fitting to remove air from system

• Mount securely to coupling body; check seal integrity before use

Shipping & Warranty

• Ships next business day from Brisbane warehouse

• Covered under standard AL‑KO parts warranty as OEM replacement component