Truck Starter Relay for MITSUBISHI U001X45873 24V 100A
A 24V 100A truck starter relay that cross references MITSUBISHI U001X45873, U 001X 45873, CASCO CSO35642, SANDO SSO35642, and SANDO SSO35642.1, fitted to the MITSUBISHI 4D33 starter system. It controls the high-current flow from the battery to the starter motor during engine cranking and protects the ignition switch from overload. Supplied in neutral, customised or CHINO branded packaging with a 12 month warranty from B/L date.
MOQ 10 pcs · Free samples, freight at your cost · Neutral or own brand packing · 12 month warranty from B/L date
Key Benefits
- Cross references five OEM part numbers so one line item covers multiple starter configurations
- 100A rated contact capacity handles the full cranking current of the MITSUBISHI 4D33 engine
- 24V system voltage matches the commercial vehicle electrical architecture of Japanese trucks
- 100 percent factory test before delivery ensures reliable cranking performance
- Twelve month warranty from B/L date protects distributor and fleet inventory
Application Scenarios
Where It Is Used
- Fleet workshops replacing failed starter relays on MITSUBISHI 4D33 trucks after repeated no-start conditions
- Aftermarket distributors restocking starter relays for Japanese truck fleets with mixed chassis builds
- OEM and ODM buyers integrating the relay into new starter assemblies under their own brand
- Repair chains diagnosing cranking issues where the starter motor clicks but does not turn
Who It Is For
- Truck parts importers who source against MITSUBISHI OEM numbers
- Aftermarket distributors serving Japanese commercial vehicle fleets
- Fleet maintenance managers running MITSUBISHI 4D33 trucks in harsh operating conditions
- Auto electrical repair shops that stock relays by voltage and current rating
Problems It Solves
Symptoms on the Vehicle
- Starter motor that clicks but fails to engage due to a weak or failed relay contact
- Relay that overheats and welds the contacts shut during repeated cranking attempts
- Original relays that are hard to source and expensive through the dealer network
- Mixed MITSUBISHI fleets that would otherwise need multiple relay part numbers
Technical Features
- High-current 100A contact rating for reliable engine cranking
- 24V commercial vehicle system voltage for compatibility with Japanese truck electrical systems
- Electromagnetic coil actuation with built-in arc suppression
- Sealed relay housing suitable for under-hood or engine bay mounting
- Designed for use with the MITSUBISHI 4D33 starter motor
Specifications
Only values printed on the original product page are listed. Anything not shown here we confirm in writing before you order.
| OEM No | U001X45873, U 001X 45873 |
|---|---|
| Reference No | CASCO CSO35642, SANDO SSO35642, SANDO SSO35642.1 |
| Type | Starter relay |
| Voltage | 24V |
| Current Rating | 100A |
| Application | MITSUBISHI 4D33 starter |
| 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
- Moulded thermoplastic relay housing
- Copper alloy flat blade terminals
- Electromagnetic coil with insulated wire
- Silver alloy contact points for high current switching
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
Terminal stamping and plating
Coil winding and assembly
PCB and contact assembly
Housing moulding
Final assembly and potting
Electrical function 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
| MITSUBISHI dealer original relay | Same fitment and performance at aftermarket pricing, but without the dealer part number on the box unless you order branded packaging |
|---|---|
| Used or reclaimed relays | New units carry a 12 month warranty from B/L date; reclaimed stock carries none and may have degraded contacts or insulation |
Use Guide
- Confirm the truck is a 24V system before fitting
- Isolate the battery, unplug the failed relay from the starter control circuit and fit the replacement in the same orientation
- Test the starter engagement and release function before releasing the vehicle
- If the starter continues to click without cranking, check the battery voltage, ground connection, and starter motor earth before condemning the relay
Also Listed Under
Questions About This Part
Which MITSUBISHI models does U001X45873 fit?
It is listed for the MITSUBISHI 4D33 starter system. Send us your chassis number and we will confirm against the original relay 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 Truck Starter Relay for MITSUBISHI U001X45873 24V 100A
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.