8-Groove Alternator Pulley AL166836 AL161112 AL157595 for John Deere Tractors
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
| John Deere | 5070M, 5080M/R/RN, 5090M/R/RN, 5100M/R |
|---|---|
| John Deere | 5620, 5720, 5820, 6020, 6120, 6220, 6320, 6420, 6520, 6620, 6820, 6920 |
| John Deere | 6105M/R, 6115M/R, 6125M/R, 6130M, 6140R, 6150M/R, 6170M/R, 6190R, 6210R |
| John Deere | 7130, 7220, 7230, 7320, 7330, 7420, 7430, 7520, 7530 and related variants |
Product Overview
A damaged or worn alternator pulley can create belt noise, poor belt tracking or inconsistent alternator speed. This pulley restores the correct multi-rib drive interface between the accessory belt and alternator on compatible John Deere charging systems.
The key ordering detail is the eight-groove design together with the AL166836 / AL161112 / AL157595 reference family. Because these numbers span many tractor models and 4045/6068 engine installations, matching the original pulley and alternator is more reliable than ordering from engine family alone.
Key Features & Performance
- 8-groove belt profile
- Restores proper alternator belt drive
- Cross-references three common John Deere pulley numbers
- Used across a broad range of John Deere tractor platforms
Replaces Part Numbers
- AL166836
- AL161112
- AL157595
Technical Specifications
- Pulley grooves: 8
- System: Alternator accessory drive
Frequently Asked Questions
Q: Why is groove count important?
A: The pulley must match the belt profile and alternator alignment; an incorrect groove count or offset can damage the belt and charging-system drive.
Q: Should I order only by engine model?
A: No. These pulleys appear on many 4045/6068-powered machines, but the alternator and pulley configuration should also be matched.
Fitment can vary by serial number, production date, engine configuration or prior repairs. Verify compatibility using the part numbers and application details listed above before ordering.