6816535 Clamp / Extendable Arm Seal Kit — Product Overview

The 6816535 Clamp / Extendable Arm Cylinder Seal Kit is designed for Bobcat 325G, 328G, 329, and 331 excavators. This kit services the clamp cylinder (also used on extendable arm configurations), with 1-1/2″ rod and 2-1/4″ bore dimensions. It is a direct aftermarket replacement for Bobcat OEM part 6816535 and cross-references to 7135557.

Clamp cylinders endure high gripping forces and frequent actuation cycles during material handling and attachment work. Seal failure leads to clamp drift, reduced holding force, and hydraulic oil contamination. The 6816535 kit uses premium polyurethane, NBR, and PTFE materials etc to maintain seal integrity under these demanding conditions.

DJF Seals offers this kit at factory-direct wholesale pricing with low MOQ — serving equipment repair shops, Bobcat dealers, and international parts distributors.

Technical Specifications

Compatible Models

• Bobcat 325G — Clamp / Ext Arm
• Bobcat 328G — Clamp / Ext Arm
• Bobcat 329 — Clamp / Ext Arm
• Bobcat 331 — Clamp / Ext Arm

Key Features & Benefits

• High-Grip Reliability — Engineered for clamp and extendable arm cylinders that see frequent actuation and sustained holding pressure. Prevents clamp drift and oil bypass.
• OEM Match — 1-1/2″ rod × 2-1/4″ bore. Fits cylinder 6817386. Direct drop-in replacement for Bobcat 6816535 and 7135557.
• Full Seal Set — Includes rod seal, piston seal, wiper, O-rings, and backup rings for a complete single-cylinder rebuild.
• Abrasion-Resistant — PU rod seals withstand the sliding wear common in clamp cylinder applications; PTFE backup rings protect against extrusion at maximum clamping pressure.
• Factory-Direct Value — Wholesale pricing from the manufacturer. Sample orders accepted. Bulk container shipping available.