6804603 Arm / Lift Cylinder Seal Kit — Product Overview

The 6804603 Arm / Lift Cylinder Seal Kit is a versatile aftermarket replacement engineered for Bobcat 231, 331, 331E, X-331, and 334 excavators, as well as Bobcat 2400/2410 wheel loaders and 943 skid steer loaders. Designed for arm and lift cylinder applications with 1-3/4″ rod and 3″ bore dimensions, this kit matches Bobcat OEM specification 6804603 and cross-references to 6587990.

The arm cylinder is the excavator’s primary digging mechanism — it must maintain seal integrity under constant high-pressure cycles, abrasive soil conditions, and heavy side-load forces. The 6804603 kit uses premium polyurethane rod seals for superior abrasion resistance, PTFE backup rings to prevent extrusion, and NBR static seals etc for reliable long-term containment.

DJF Seals supplies this kit at factory-direct wholesale pricing with flexible MOQ. One kit supports 9+ Bobcat models across excavator, wheel loader, and skid steer platforms — simplifying parts inventory for multi-brand equipment dealers and independent repair shops.

Technical Specifications

Compatible Models

• Bobcat 231 — Arm Cylinder
• Bobcat 331 / 331E / X-331 — Arm Cylinder
• Bobcat 334 — Arm Cylinder
• Bobcat 2400 / 2410 — Wheel Loader Lift Cylinder
• Bobcat 943 — Skid Steer Lift Cylinder

Key Features & Benefits

• 9-Model Versatility — One seal kit covers Bobcat 231/331/331E/334 excavators, 2400/2410 wheel loaders, and 943 skid steer. Dramatically reduces SKU count for multi-line dealers.
• OEM Precision — 1-3/4″ rod × 3″ bore. Direct replacement for 6804603 and 6587990. No fitting or modification required.
• Arm-Duty Durability — Polyurethane rod seals withstand the high side-load forces and repetitive dig cycles of excavator arm operation.
• Complete Reseal Kit — Rod seal, piston seal, wiper, O-rings, and backup rings included for a full cylinder rebuild.
• Factory-Direct Wholesale — Eliminate middleman markups. Bulk order discounts, custom packaging, and private labeling available.