ACDelco V-Ribbed Serpentine Belt 6K938 Gold OE-Style Replacement — Durable, Heat-Resistant

The ACDelco Gold 6K938 is a premium V-ribbed serpentine belt engineered as an OE-style replacement to drive your engine accessories reliably.

The ACDelco Gold 6K938 serpentine belt is a multi-ribbed drive belt designed to replace original equipment on many vehicles, particularly General Motors models. Built to meet the fit, form, and function expectations of OE parts, this belt powers the alternator, power steering pump, water pump and other accessory components. As part of the ACDelco Gold (Professional) line, it offers a durable aftermarket option backed by General Motors engineering standards.

What does the 6K938 belt actually drive on my engine?

This serpentine belt routes around several pulleys and transfers crankshaft power to accessory systems. Without a properly fitting belt, those systems can fail or underperform.

• Alternator — charges battery and powers electrical systems
• Power steering pump — enables steering assist
• Water pump — circulates engine coolant on many designs
• Air conditioning compressor — runs cabin A/C when equipped

How does ACDelco Gold compare to original equipment?

ACDelco Gold parts are manufactured to match OE specifications for dimensions and material performance, making them a dependable aftermarket choice. They are intended to provide comparable fit and function so installation is straightforward and replacement intervals remain similar.

• Made to match OE fit, form, and function
• Premium materials for wear and heat resistance
• Backed by General Motors engineering standards
• Suitable for many makes and models, including GM vehicles

When should I replace the 6K938 serpentine belt?

Inspect the belt regularly for visible wear, cracking, glazing, fraying, or rib separation. Replace it if you notice noise, slipping, or damage; routine replacement intervals vary by vehicle and operating conditions.

• Check for cracks, missing ribs, or glossy glazing
• Replace if belt slips or engine accessories underperform
• Follow your vehicle manufacturer’s service schedule for guidance
• Consider replacing tensioners and pulleys during belt service

Is installation straightforward for a DIYer?

Basic belt replacement can be a simple job with the right tools and access to the belt routing diagram. Modern engines may require relieving tension with a spring-loaded or manual tensioner, so proper procedure is important.

• Use belt routing diagram to ensure correct path
• Release tensioner to remove and refit the belt safely
• Check pulley alignment and tensioner condition while replacing
• Seek professional help if access or tools are limited

Who is this for: The ACDelco Gold 6K938 V-ribbed serpentine belt is aimed at vehicle owners and mechanics seeking a high-quality, OE-style replacement for accessory drive systems. It suits drivers of General Motors cars and trucks as well as many other makes and models that accept this belt size. Choose this part if you want a durable aftermarket belt manufactured to meet original specifications and backed by ACDelco/GM engineering.