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Ignition Key Switch for New Holland Tractors TC35 TC40 TC45 - 86405634, 86405635, 87577812, 86400226
Ignition Key Switch for New Holland Tractors TC35 TC40 TC45 - 86405634, 86405635, 87577812, 86400226
$57.99
Sale price
$57.99
Regular price
Available to Order
This aftermarket ignition key switch replaces part numbers 86405634, 86405635, 87577812, and 86400226 for compatible New Holland Boomer, T-series, and TC-series tractors.
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Product Overview
Restore dependable starting and key-controlled electrical operation with this replacement ignition switch for compatible New Holland tractors. Designed to replace a worn, damaged, or non-functioning switch, it helps restore reliable power control for the tractor’s starting and ignition system.
This switch is compatible with select New Holland Boomer, T-series, and TC-series applications, including TC35, TC40, TC45, T2210, T2220, and related models. Its direct-replacement design makes it a practical solution for tractors experiencing intermittent starting, loose key operation, damaged terminals, or complete ignition switch failure.
This is a high-quality aftermarket replacement part and is not manufactured or supplied by New Holland. Tractor configuration, production date, wiring layout, and serial number may affect fitment, so the original part number and connector design should be verified before purchase.
Key Features & Performance
- Designed to restore reliable key-controlled starting operation
- Replaces multiple New Holland ignition switch part numbers
- Compatible with select Boomer, T-series, and TC-series tractors
- Useful for replacing worn, damaged, or intermittent ignition switches
- Direct-replacement design for compatible applications
- Supports proper electrical connection to the tractor starting system
- Cost-effective aftermarket alternative to an OEM switch
Compatible Models
- New Holland Boomer 2035
- New Holland Boomer 3040
- New Holland Boomer 3045
- New Holland Boomer 3050
- New Holland T2210
- New Holland T2220
- New Holland TC29DA
- New Holland TC31DA
- New Holland TC33DA
- New Holland TC34DA
- New Holland TC35
- New Holland TC40
- New Holland TC40A
- New Holland TC40DA
- New Holland TC45
- New Holland TC45A
- New Holland TC45DA
Replaces Part Numbers
- 86405634
- 86405635
- 87577812
- 86400226
Common Uses
- Replacing an ignition switch that no longer turns properly
- Repairing intermittent or inconsistent starting problems
- Replacing damaged electrical terminals or switch contacts
- Restoring key-controlled accessory and starter functions
- Servicing compatible New Holland compact and utility tractors
Technical Specifications
- Product Type: Ignition Key Switch
- Compatible Brand: New Holland
- Compatible Series: Boomer, T-Series, and TC-Series
- Fitment Type: Direct Replacement
- Replacement Type: Aftermarket
- Primary Application: Tractor Starting and Ignition System
- OEM Status: Not an OEM product
Installation & Fitment
- Verify the tractor model and serial number before ordering
- Match the original switch part number to one of the listed replacements
- Compare the electrical connector, terminal count, and mounting design
- Disconnect the battery before removing or installing the switch
- Inspect the wiring harness and terminals for corrosion or damage
- Confirm proper key positions and starting operation after installation
- Professional installation is recommended when wiring diagnosis is required
Compatibility Notice
Model compatibility alone may not guarantee fitment. New Holland tractors within the same model family can use different ignition switches depending on production date, serial number, wiring configuration, and installed options. Always compare the original part number, connector layout, terminal arrangement, and switch dimensions before purchase.
Frequently Asked Questions
Q: Which part numbers does this ignition switch replace? A: It replaces 86405634, 86405635, 87577812, and 86400226 in compatible applications.
Q: Will this fit New Holland TC35, TC40, and TC45 tractors? A: These models are listed as compatible, but the original part number, wiring connector, and serial number should still be verified.
Q: Is this an original New Holland part? A: No. This is a high-quality aftermarket replacement part designed for compatible New Holland tractors.
Q: Can a faulty ignition switch cause intermittent starting? A: Yes. Worn internal contacts, loose terminals, or electrical damage can cause inconsistent starting or loss of key-controlled power.
Q: How do I confirm fitment? A: Match the original part number and compare the connector, terminal arrangement, mounting style, and tractor serial information before ordering.
Brand names, model numbers, and part numbers are used for identification and compatibility reference only. Verify all tractor and switch information before purchase.