Seal Kits for Bobcat Excavators - DJF Seals

DJF hydraulic seal kit manufacturer wholesale multiple custom size and standard size hydraulic seal kits for Bobcat Excavators

7156581 Hydraulic Seal Kit — 7156581 Boom/Arm Cylinder Seal Kit — Product Overview

The 7156581 Boom/Arm Cylinder Seal Kit is a comprehensive aftermarket replacement for Bobcat 331, 331E, 334, and 430 excavator boom and arm cylinders. Engineered for 1-3/4″ rod and 3-1/4″ bore hydraulic systems, this kit delivers OEM-equivalent sealing performance for both lift and crowd functions. Cross-references with OEM part 7162060.

Boom and arm cylinders on the Bobcat 331/430 series operate under continuous cyclical loading — lifting, lowering, and articulating the front attachment assembly. Seal failure in these circuits leads to dual-symptom breakdown: boom drift during stationary holding and arm creep under digging resistance. The 7156581 kit addresses both failure modes with application-matched seal compounds.

Manufactured with high-performance polyurethane rod seals and NBR static seals etc, this kit provides reliable containment across the full operating temperature range of Bobcat excavators. DJF Seals supplies the 7156581 at factory-direct wholesale pricing — one kit covering both boom and arm cylinder positions on four Bobcat models.

Technical Specifications

Parameter Specification

OEM Part Number 7156581

Cross Reference 7162060

Compatible Brand Bobcat

Cylinder Application Boom / Arm Cylinder

Rod Diameter 1-3/4″ (44.5 mm)

Bore Diameter 3-1/4″ (82.6 mm)

Material Polyurethane, NBR, PTFE etc

Kit Contents Rod seal, Piston seal, Wiper, O-rings, Backup rings

Condition New, Aftermarket Replacement

Business Type Factory Direct Wholesale

Compatible Models

Bobcat 331 — Boom / Arm Cylinder

Bobcat 331E — Boom / Arm Cylinder

Bobcat 334 — Boom / Arm Cylinder

Bobcat 430 — Boom / Arm Cylinder

Key Features & Benefits

Dual-Position Compatibility — One kit services both boom and arm cylinders on Bobcat 331/430 series, reducing the number of unique SKUs required for fleet maintenance inventory.

Cross-Referenced Coverage — Direct replacement for OEM part 7162060. Compatible with 7156581-specified cylinder assemblies across four Bobcat excavator models.

Cyclic-Load Endurance — Polyurethane rod seals engineered for the repetitive extension/retraction cycles typical of boom and arm operations, maintaining seal integrity through thousands of duty cycles.

Complete Overhaul Kit — Includes rod seal, piston seal, wiper, O-rings, and backup rings — all components required for a full boom or arm cylinder reseal in one package.

Factory-Direct Wholesale — Competitive pricing with flexible MOQ. OEM/ODM service available with custom branding and packaging for Bobcat parts distributors.

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