High Quality 4BT3.9 Diesel Engine Parts Belt Tensioner 3976833

Keywords: 3976833 belt tensioner, 4BT3.9 belt tensioner, 4BT3.9 engine tensioner pulley, diesel engine spare parts, excavator engine parts, construction machinery belt tensioner

Product Overview

This belt tensioner 3976833 is specially developed for 4BT3.9 series diesel engines, widely used on excavators, loaders and other construction machinery. It automatically maintains proper tension of engine drive belt, prevents belt slipping and vibration, ensures stable operation of water pump, alternator and other auxiliary components. It is a critical replacement part for engine overhaul and regular maintenance.

Detailed Specifications

Key Features & Advantages

• High-strength aluminum alloy housing, light weight and strong structure, good heat dissipation performance.
• Wear-resistant nylon pulley, low friction coefficient, reduce belt wear and extend belt service life.
• Built-in high-quality spring structure, stable automatic tension adjustment during engine operation.
• High precision bearing inside, smooth rotation, low noise and long service cycle.
• Anti-corrosion surface treatment, adapt to harsh working environment of construction site.
• Direct replacement design, perfectly match original installation position for quick assembly.

Application Scope

• Suitable for excavators, wheel loaders, stationary generator sets equipped with 4BT3.9 diesel engines
• Used to tension engine drive belt for water pump, alternator and fan drive system
• Widely used in engineering construction equipment, mining machinery and agricultural power equipment

Our Company Advantage

• We are professional supplier of diesel engine spare parts, supply a full range of engine components.
• Strict quality inspection before delivery to guarantee product quality.
• Support customized orders and small batch trial orders, offer competitive factory price and fast reply for your inquiry.
• Complete product catalogue covering multiple engine models, one-stop purchasing service for various spare parts.
• Rich export experience, familiar with international trade requirements for construction machinery parts.

Packaging & Shipping

• Packed with independent plastic inner packaging and export carton box to avoid scratch and damage during transportation.
• We can ship goods by sea, air or international express according to customer requirements. Fast delivery time after receiving deposit.
• Label customization service is available, we can print your brand logo and part number on package.

Contact Us

If you need more excavator spare parts or other construction machinery replacement components, please send your parts list to us. We will offer our best quotation for you quickly.