Brake Light Switch for ISUZU 4DT
A normally open, OFF-ON stop light switch with NPT1/4 thread and 30mm spanner size, cross referencing ISUZU 4DT. It activates the brake light circuit when the brake pedal is pressed and returns to OFF when released. Factory reference CN-4DT. Supplied in neutral, customised or CHINO branded packaging with a 12 month warranty from B/L date. Fitted to Japanese trucks and commercial vehicles.
MOQ 10 pcs · Free samples, freight at your cost · Neutral or own brand packing · 12 month warranty from B/L date
Key Benefits
- NPT1/4 thread and 30mm spanner size match the original ISUZU 4DT for direct replacement without modification
- Normally open contact ensures brake lights activate only under pedal pressure, preventing false illumination
- Direct fit to ISUZU 4DT chassis without rewiring or adapter use
- 12 month warranty from B/L date covers failure due to manufacturing defect
- Ships in 7 to 10 working days as a stocked fast-moving item
- Neutral or custom packaging supports distributor branding and private label programs
Application Scenarios
Where It Is Used
- Fleet workshops replacing failed brake light switches on ISUZU trucks after repeated pedal actuation wear
- Aftermarket distributors restocking ISUZU 4DT switches for Japanese truck fleets in Southeast Asia
- Repair chains diagnosing brake lights that stay on or fail to illuminate during service checks
- Body builders integrating new brake light circuits on ISUZU chassis conversions
Who It Is For
- Truck parts importers sourcing ISUZU 4DT replacements by OEM number
- Aftermarket distributors serving Japanese commercial vehicle fleets
- Fleet maintenance managers running ISUZU trucks with brake light reliability issues
- Auto electrical repair shops that stock switches by thread and spanner size
Problems It Solves
Symptoms on the Vehicle
- Brake lights that remain on due to a stuck or worn contact in the original switch
- Brake lights that fail to illuminate when the pedal is pressed, caused by contact degradation
- Original ISUZU 4DT switches that are hard to source and expensive through dealer channels
- Inconsistent fitment when using generic switches with mismatched thread or spanner size
Technical Features
- NPT1/4 thread for secure sealing in hydraulic brake line connections
- 30mm spanner size for standard wrench fitment during installation or removal
- Normally open contact configuration: OFF when pedal is released, ON when pressed
- Stop light switch function integrated into the brake pedal linkage
- Metal housing suitable for under-hood or under-dashboard mounting in commercial vehicles
Specifications
Only values printed on the original product page are listed. Anything not shown here we confirm in writing before you order.
| OEM No | 4DT |
|---|---|
| Factory No | CN-4DT |
| Type | Brake light switch |
| Thread | NPT1/4 |
| Spanner | 30 |
| Contact | Normally open; OFF-ON |
| Application | ISUZU |
| Place of Origin | Ruian, China |
| MOQ | 10 pcs |
| Delivery Time | 7-10 working days |
| Packing | Neutral, customised or CHINO box |
| Warranty | 12 months since B/L date |
| Certification | ISO 9001:2015 |
Materials and Manufacturing
Materials
- Brass body with NPT1/4 threaded inlet
- Stainless steel contact spring
- Plastic insulating housing for terminal protection
Quality Control
- 100 percent function test before delivery
- Performance parameters checked in the in-house laboratory
- Component materials sourced from named suppliers under the IATF 16949:2016 documented process
- Production and test steps recorded on video
Manufacturing Process
Brass casting and threading
Contact spring machining and plating
Housing moulding and terminal insertion
Final assembly and sealing
Electrical function test and leak test
Customization Options
- Neutral packing with no brand marking
- Customer branded box and barcode label
- CHINO branded retail box
- OEM and ODM builds against a sample or drawing
Compared With the Alternatives
| ISUZU dealer original switch | Same fitment and thread size at aftermarket pricing, but without the OEM number on the box unless branded packaging is ordered |
|---|---|
| Generic brake switch with metric thread | NPT1/4 thread ensures compatibility with ISUZU hydraulic systems; metric thread switches may leak or fail to seal |
| Used or reclaimed switch | New units carry a 12 month warranty from B/L date; reclaimed stock carries no warranty and may have worn contacts |
Use Guide
- Match the NPT1/4 thread and 30mm spanner size against the old switch before ordering
- Isolate the battery, disconnect the old switch from the brake pedal linkage, and install the replacement with correct orientation
- Test brake light activation and release under pedal pressure before releasing the vehicle
- If the brake light remains on, check for pedal linkage binding or contact contamination before condemning the switch
Also Listed Under
Questions About This Part
Which ISUZU models does 4DT fit?
It is listed for ISUZU trucks and cross references the 4DT part number. Send us your chassis number and we will confirm fitment before you order.
What is the minimum order quantity?
10 pcs on catalogue items. We also accept small trial orders so you can test the part in your own market first.
How long is delivery?
7 to 10 working days for fast moving items held in stock. Production orders take longer and we confirm the date in writing when the order is placed.
Can I get the parts in my own packaging?
Yes. We supply neutral packing, your own branded box with barcode label, or the CHINO box. Artwork is confirmed before printing.
What warranty do you give?
12 months from the B/L date. If a unit fails within that period we take responsibility when the fault is caused by the part, and we reply to any complaint within 24 hours with a solution within 3 days.
Are samples free?
The sample itself is free of charge. We discuss the freight cost with you before shipping.
How do you control quality?
Every part is function tested before delivery and performance parameters are checked in our own laboratory. Components come from named suppliers and production follows the IATF 16949:2016 documented process.
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Ask for a Quote on Brake Light Switch for ISUZU 4DT
Send the number printed on your original unit and a photograph of the connector. We confirm the match before you order and send a free sample first.