Check the part number and your machine details before arranging collection.
Electrical & lighting
Isolation Switch
OT-1833740In stock
Isolation switch for the listed tractor applications.
Not sure it fits? Send your tractor model and serial number. Brian will confirm compatibility.
No online payment. Brian confirms availability and collection.
Listed applications
Listed applications for this part reference. Confirm your machine model, engine variant and serial number with Brian before collection.
View listed models (107)
Massey Ferguson · 100 Series15 models
122, 130, 133, 135, 140, 145, 148, 152, 155, 158, 165, 168, 175, 185, 188
Massey Ferguson · 200 Series11 models
230, 240, 245, 253, 255, 260, 265, 275, 285, 290, 298
Massey Ferguson · 300 Series16 models
340, 342, 350, 352, 355, 360, 362, 365, 372, 375, 382, 390, 390 T, 396, 398, 399
Massey Ferguson · Pre 100 Series2 models
35 3-Cylinder, 65
Massey Ferguson · 3000 Series9 models
3050, 3060, 3065, 3070, 3075, 3080, 3085, 3090, 3095
Massey Ferguson · 500 Series5 models
550, 560, 575, 590, 595
Massey Ferguson · 600 Series5 models
675, 690, 698, 698 T, 699
Massey Ferguson · 3600 Series9 models
3610, 3630, 3635, 3645, 3650, 3655, 3670, 3680, 3690
Massey Ferguson · 6100 Series7 models
6120, 6130, 6140, 6150, 6160, 6170, 6180
Massey Ferguson · 8100 Series6 models
8110, 8120, 8130, 8140, 8150, 8160
Massey Ferguson · 1000 Series2 models
1004, 1004 T
Massey Ferguson · 3100 Series3 models
3115, 3120, 3125
Massey Ferguson · 2700 Series2 models
2720, 2725
Massey Ferguson · 2600 Series5 models
2620, 2640, 2645, 2680, 2685
Ford New Holland · 10 Series2 models
3310, 4110
Ford New Holland · 1000 Series3 models
3000, 4000, 5000
Ford New Holland · 1000 (All Purpose)5 models
2100, 3100, 4100, 5100, 7100
Check the original part reference and tractor serial number before ordering.
Listed reference numbers
S41135 · 39121 · 34198 · S.41135 · VPM6015 · 30/187-2 · 187-2 · 81806706 · C5NN11N500A · 39855 · SMB497 · 1012043M91 · 1679223M1 · 1679223M2 · 888501M2 · 963417M2 · 1679 223M2 · 3381094M · 50715007 · MF0146 · 3381094M1
Compare the complete reference, including any suffix, with your original component.
Part information: SJ Spares. Checked 6 October 2026.
Collect in Kilbrew
Request your parts online. Wait for confirmation, then pay on collection from Kilbrew, Ashbourne, Co. Meath.
Personal parts support
GD Machinery (Gerry Duffy Machinery). SAME and DEUTZ-FAHR parts specialists in Ireland.
Get to know the team →Stock & availability
Catalogue updated 1 October 2026. Stock may change. Requests do not reserve parts until confirmed by the team.