Your browser version is not officially supported, and you may experience a degraded service. Please upgrade your browser.
We’ve introduced a new phone system to improve your experience. While it may sound a little different, you’ll still reach the same team. Contact us as usual on 01502 716993. If you have older numbers saved, please use this main number.
x

We’re exhibiting at Seawork 2026 alongside LKQ Aquafax! See us 9th – 11th June on Stand H7

Ignition Switch with 4 Positions (No Keys)

Part No: 709523

4 position Lucas type key start switch body with heat position.Supplied without the barrel and keys - order as an extra (709527).Through panel mounted key switch, supplied with 1/2" B Read more

Description

4 position Lucas type key start switch body with heat position.

Supplied without the barrel and keys - order as an extra (709527).

Through panel mounted key switch, supplied with 1/2" BSP chromed fixing nut.

Very popular. Used by Thornycroft engines and Perkins engines. Replaces Thornycroft part number 54381445

Can be used with energised to run and heater glow plugs, making this switch ideal for diesel engines. Requires a cut out hole of 18.5mm diameter.

- Terminal 1: Live in.

- Terminal 2: Unswitched Aux (live through sweep)

- Terminal 3: Starter.

- Terminal 4: Switched Aux (off in heat start position)

- Terminal 5: Heater plugs.

Specifications
Supplied With Please order Key separately, Part Number: 709527.
Brand AG
Diameter Description Cut Out: 18.5mm
Replaces 35288, 2846129, U602599L, 2846128, 2846121 and Thornycroft 54381445
Ask a Question
Ignition Switch with 4 Positions (No Keys)

£67.80

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

£67.80 Incl VAT

 4 in stock

View Trade Prices
Quantity

Get offers in your inbox

Sign up for the latest offers, product news, technical advice and more.

By submitting your details you consent to our Privacy Notice.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.