Skip to product information
Usually ships in 2–4 business days.
Belt T428705 8780282 4080803 for John Deere Engine 3029 4045 6068 6081 6125 6135
$59.89
Sale price
$59.89
Regular price
Available to Order
This Belt is a high-quality replacement belt compatible with John Deere engines 3029, 4045, 6068, 6081, 6125, 6135 and matches OEM Part# T428705, 8780282, 4080803.
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 belt is a durable replacement drive belt designed for John Deere engine models 3029, 4045, 6068, 6081, 6125, and 6135. It ensures proper power transmission for engine-driven components such as fans, alternators, and water pumps. The belt is suitable for agricultural, industrial, and construction equipment using these John Deere power units.
Key Features & Performance
- High-strength construction resists stretching and wear
- Matches multiple OEM part numbers for broad compatibility
- Precision length and width for proper tension and alignment
- Resistant to oil, heat, and ozone for long service life
- Direct replacement for T428705, 8780282, and 4080803 belts
Fitment & Compatibility
- John Deere Engine 3029
- John Deere Engine 4045
- John Deere Engine 6068
- John Deere Engine 6081
- John Deere Engine 6125
- John Deere Engine 6135
Common Uses
- Fan belt for engine cooling systems
- Alternator belt for charging systems
- Water pump belt for coolant circulation
- General accessory drive belt on John Deere engines
Technical Specifications
- Part Number(s): T428705, 8780282, 4080803
Frequently Asked Questions
Q: Will this belt fit my John Deere engine with a different serial number? A: This belt is designed for the engine series listed; however, please verify your specific model and year for correct fitment.
Q: Is this belt reinforced with Kevlar or similar material? A: The belt is made from high-grade rubber with tensile cords, but specific reinforcement material may vary. It meets OEM specifications.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.