4477373 Ignition Switch is an aftermarket replacement ignition switch for Hitachi & John Deere machines, including 135C, 160LC, 75C, 75D, 300GLC and other listed models. The ignition switch (key switch or main switch) passes power from the battery to the starter and run circuits. It is supplied by LIONKITS as aftermarket new with a 6-month warranty.
4477373 Ignition Switch Specifications
- Product Type: Ignition Switch
- Part Number: 4477373
- Compatible Brand: Hitachi & John Deere
- Condition: Aftermarket new
- Warranty: 6 months
- Brand: LIONKITS
- Country of Origin: China
Hitachi & John Deere Models Compatible with the 4477373 Ignition Switch
- Hitachi 180
- 190
- 135C
- 75C
- 75D
- 300GLC
- 160LC; John Deere 110 120 120C 120D 130G 135C 135D 135G 160C 160DLC 160GLC 160LC 180 180GLC 190 190DW 190GW 200CLC 200DLC 210 210G 220DW 225CLC 225DLC 230CLC 230GW 230LC 230LCR
Your model is not listed? Contact LIONKITS via live chat or email with your machine model and nameplate photo, and we will confirm compatibility.
What Does an Ignition Switch Do?
The ignition switch (key switch or main switch) passes power from the battery to the starter and run circuits. Turning the key to ON powers the instrument panel and control circuits, and turning it to START sends the start signal. Worn contacts or a damaged connector can interrupt that power, so the machine may crank intermittently or not at all.
Signs the Part Needs Replacing
- No crank or intermittent no-crank: the key is turned but the starter does not respond, or responds only sometimes, even though the battery is healthy.
- Starts, then stalls: the run circuit drops out when the key returns from START to ON.
- Dash lights, gauges or work lights flicker or die: electrical power cuts in and out as the key moves.
- Power returns when the key is nudged: a strong sign of worn internal contacts.
- Key hard to turn, stuck or will not return to OFF: a worn lock cylinder or damaged switch body.
These symptoms overlap with a faulty engine control motor, wiring problems or a worn injection pump linkage, so check the whole throttle system before replacing the part.
How to Order and Install the 4477373 Ignition Switch
- Confirm your machine model, engine model and the part number on your existing part before ordering.
- Compare the number of pins, the connector shape and the key type with your old switch before ordering.
- Send a photo of the old part or the nameplate if you are not sure; LIONKITS will confirm fitment for you.
- Check the battery terminals, ground strap, main fuse and starter relay first, and inspect the switch connector for burn marks, loose pins or corrosion.
- Disconnect the battery (ground cable first) before removing the switch, and note or photograph the wire positions and terminal markings so each wire goes back in the same place.
- Fit the new switch, reconnect the wiring and the battery, and test every key position: OFF, ON and START.
Shipping, Payment and Support
- Preparation time: 2-3 business days
- Delivery time: 3-7 business days
- Shipping methods: DHL, FedEx, UPS, TNT, USPS EMS
- Payment methods: PayPal, Stripe, Credit card, Visa
- Order tracking: A tracking number with a tracking link is sent by email once the order ships.
Frequently Asked Questions
What is the 4477373 Ignition Switch?
The 4477373 Ignition Switch is an aftermarket replacement ignition switch for Hitachi & John Deere machines, supplied as aftermarket new under part number 4477373.
Which Hitachi & John Deere models does the 4477373 Ignition Switch fit?
It is listed for 135C, 160LC, 75C, 75D, 300GLC and other models in the compatibility list above. If you are unsure, send your machine nameplate to LIONKITS for confirmation.
How do I know an ignition switch has failed?
Typical signs are no crank or intermittent no-crank, an engine that starts and then stalls, flickering or dead dash lights and gauges, power that returns when the key is moved and a key that is hard to turn or will not return to OFF.
What are the warranty and delivery terms for the 4477373 Ignition Switch?
Warranty: 6 months. Typically, orders are prepared in 2-3 business days and delivery takes 3-7 business days. Shipping by DHL, FedEx, UPS, TNT, USPS EMS.
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