7700042420 Ignition Starter Switch for Claas / Renault Ares 500 600 700 Series
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.
Ignition Starter Switch for Claas / Renault Ares 500 600 700 Series
This ignition starter switch, OEM cross-reference 7700042420, provides reliable start and power control for Claas and Renault Ares tractors in the 500, 600, and 700 series. It acts as a direct replacement ignition starter switch for Claas / Renault Ares models, restoring key operation and electrical circuit management.
Overview
This ignition starter switch for Claas / Renault Ares 500 600 700 Series is an electrical component that controls the starting circuit and powers auxiliary systems when the key is turned. It is designed to fit Claas and Renault Ares tractors across the 500, 600, and 700 series, offering a dependable replacement for a worn or faulty switch. The switch includes the OEM cross-reference 7700042420 for compatibility assurance.
Built For Performance
- OEM cross-reference 7700042420 matches factory electrical specifications
- Robust contact terminals for consistent current flow during engine cranking
- Weather-resistant housing to withstand dust and moisture on farm equipment
- Multiple key positions for off, accessory, and start functions
- Direct-fit mounting pattern for Claas and Renault Ares dashboards
Fits These Machines
- for Claas Ares 500 Series
- for Claas Ares 600 Series
- for Claas Ares 700 Series
- for Renault Ares 500 Series
- for Renault Ares 600 Series
- for Renault Ares 700 Series
On-The-Job Use
- Field operations requiring repeated engine start-stop cycles during planting or harvesting
- Daily tractor use in livestock operations where quick ignition response is needed
- Transport between farm sites with frequent key cycling
Specs At A Glance
| Part Number(s) | 7700042420 |
| Switch Type | Ignition Starter Switch |
| Compatible Series | 500, 600, 700 |
Good To Know
Q: How do I know if this ignition starter switch fits my Claas or Renault Ares tractor? A: Check that your tractor is in the Ares 500, 600, or 700 series and that the OEM part number 7700042420 matches the switch currently installed. The mounting pattern and electrical connector layout are designed to match factory units for these series.
Q: What are the common signs my ignition starter switch needs replacement? A: Symptoms include the engine not cranking when the key is turned, intermittent power loss to dash lights, or the key sticking in the ignition cylinder. Replacing a worn switch restores reliable starting and prevents electrical faults.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.