Skip to product information
Usually ships in 2–4 business days.
3909888 Fan Blade Hub for Cummins 4B 4BT 6B 6BT Fan Hub 4932912
$137.59
Sale price
$137.59
Regular price
Available to Order
This Fan Blade Hub is a high-quality aftermarket replacement part compatible with Cummins 4B, 4BT, 6B, 6BT and matches OEM Part# 3909888, 4932912.
Need help finding the right part? Talk with a parts expert today.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.
Randy W. — Verified customer
Product Overview
This Fan Blade Hub is engineered to provide reliable cooling performance for Cummins B-series engines. Constructed from high-strength materials, it serves as a robust replacement for the original equipment, ensuring long-lasting service life under demanding conditions.
Key Features & Performance
- Direct Fitment: Manufactured to the same dimensions as the original part for a seamless installation.
- Heavy-Duty Build: Designed to handle the rotational stresses and thermal cycles of diesel engines.
- Balanced Operation: Helps maintain engine efficiency by providing a stable mount for the cooling fan.
Fitment & Compatibility
- Compatible Models: Cummins 4B, 4BT, 6B, 6BT Engines
- Part Number(s): 3909888, 4932912
Technical Specifications
- Component Type: Fan Blade Hub
- Engine Series: Cummins B-Series
- Installation Type: Bolt-On
Frequently Asked Questions
- Q: Will this work for a 6BT engine used in a Dodge Ram? A: Yes, this fan hub is compatible with 6BT engines commonly found in various applications, though you should verify the OEM part number matches your specific setup.
- Q: Is the bearing included with the hub assembly? A: This component is the hub itself; please check your existing assembly to determine if additional bearings are required for your specific repair.
Compatibility may vary by serial number. Verify fitment before purchase.