Motion MTP-3434009 6-Hole Aluminum Oil Hub Cap | Replaces STEMCO 343-4009

Product Overview

The Motion Trucking Parts MTP-3434009 Oil Hub Cap is a high-quality aftermarket replacement for STEMCO 343-4009, designed to protect wheel bearings and maintain proper lubrication in heavy-duty truck and trailer wheel hub assemblies.

Featuring a durable aluminum housing, transparent oil level inspection window, and convenient side fill plug, this 6-hole hub cap allows easy lubricant monitoring and maintenance. Its reliable construction helps protect internal wheel hub components from dirt, moisture, and road contaminants while supporting dependable wheel-end performance.

Key Features

• Direct Replacement: Designed to replace STEMCO 343-4009 and compatible aftermarket equivalents.

• 6-Hole Configuration: Features a 5.5-inch bolt circle for compatible wheel hub assemblies.

• Durable Aluminum Construction: Designed for strength, durability, and heat dissipation.

• Clear Oil Level Window: Allows convenient visual inspection of hub lubricant levels.

• Side Fill Plug: Provides convenient access for lubricant filling and maintenance.

• Reliable Sealing: Helps prevent oil leakage when installed with the proper gasket.

• Contaminant Protection: Helps protect wheel bearings from dirt, dust, moisture, and road debris.

Product Specifications

• Brand: Motion Trucking Parts

• Motion Part Number / SKU: MTP-3434009

• Product Type: Oil Hub Cap

• Material: Aluminum

• Bolt Holes: 6

• Bolt Circle Diameter: 5.5 inches

• Bolt Size: 5/16 inch

• Overall Height: 2-11/16 inches

• Inside Depth: 1-15/16 inches

• Flange Inner Diameter: 4-3/8 inches

• Flange Outer Diameter: 6-1/4 inches

• Application: Heavy-Duty Trucks and Trailers

Replacement / Interchange Part Numbers

• STEMCO 343-4009

• Meritor A3262C133

• Meritor A3262H398

• National HU009A

• Dual Dynamics DG6PS

Compatible Replacement Components

• Hub Cap Gasket: STEMCO 330-3009 / Motion MTP-3303009

• STEMCO Window Kit: 359-5995

Package Includes

• 1 × Motion Trucking Parts Oil Hub Cap (MTP-3434009)

Fitment Note: Please verify your existing hub cap part number, mounting dimensions, and bolt-hole configuration before ordering to ensure proper fitment.