Cummins Crankshaft Pulley 3943978 – Durable Drive Component for Engines
The Cummins Crankshaft Pulley 3943978 plays a vital role in maintaining efficient engine performance. Positioned on the crankshaft, it drives the accessory belts that power key systems such as the alternator, water pump, and air conditioning compressor. By keeping belt movement smooth and aligned, the pulley supports the overall reliability of the engine.
🔧 Specifications
- Part Name: Crankshaft Pulley
- Part Number: 3943978
- Function: Transfers rotational force from the crankshaft to accessory systems
- Category: Heavy-duty engine parts
- Material: Precision-machined, wear-resistant metal
⭐ Key Features
This crankshaft pulley is designed for strength and long service life. It effectively resists vibration, heat, and constant mechanical stress. Because of its durable construction, operators can rely on consistent belt tension and reduced risk of slippage. In turn, connected systems such as the charging and cooling units operate more efficiently, helping extend engine lifespan.
⚙️ Technical Role
Beyond its basic function, the pulley also helps maintain engine balance. A properly fitted pulley reduces stress on the crankshaft and surrounding parts, which minimizes maintenance needs. Its accurate design ensures compatibility with Cummins engines, offering both performance and dependability.
🚛 Applications
The 3943978 crankshaft pulley is commonly used in trucks, buses, marine equipment, and construction machinery. Since these applications often run under demanding conditions, a reliable pulley directly contributes to reducing downtime and operating costs.
📦 Availability
We provide the 3943978 pulley with worldwide shipping options. To avoid mismatches, customers are encouraged to share their engine serial number (ESN) for confirmation. With the correct pulley installed, your Cummins-powered equipment can continue running at peak efficiency for longer intervals.
