Pump Relay Unit for MITSUBISHI MB358589 12V 5P
A 12V 5-pin pump relay unit that cross references MITSUBISHI MB358589, K8T51371 and MD050217, fitted to MITSUBISHI commercial vehicles. It controls the fuel pump circuit by switching the high current load on and off in response to the engine control signal. 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 three MITSUBISHI OEM numbers so one part covers multiple vehicle builds
- Five pin housing matches the original loom connector with no rewiring required at the workshop
- Relay switches high current fuel pump loads reliably in 12V commercial vehicle systems
- Built-in protection prevents damage to the control circuit from voltage spikes or shorted pumps
- Ships in 7 to 10 working days as a stocked fast moving item
- Twelve month warranty from B/L date protects distributor shelf stock
Application Scenarios
Where It Is Used
- Fleet workshops replacing failed pump relays on MITSUBISHI trucks after engine start-up issues
- Aftermarket distributors restocking MITSUBISHI electrical components for mixed Japanese truck fleets
- OEM and ODM buyers integrating the relay into new vehicle control systems
- Repair chains diagnosing fuel pumps that do not prime or run continuously
Who It Is For
- Truck parts importers who buy against MITSUBISHI OEM numbers
- Aftermarket distributors serving Japanese truck fleets
- Fleet maintenance managers running MITSUBISHI trucks
- Auto electrical repair shops that stock relays by pin count and voltage
Problems It Solves
Symptoms on the Vehicle
- Fuel pump that does not engage when the ignition is turned on
- Pump that runs continuously after engine start, indicating a failed relay contact
- Original relays that are slow to source and expensive through the dealer network
- Mixed MITSUBISHI fleets that would otherwise need multiple relay part numbers
Technical Features
- High current switching for fuel pump circuits in 12V commercial vehicle systems
- Five pin flat blade housing to match the original MITSUBISHI loom connector
- Electronic control circuit with built-in protection against voltage spikes
- 12V system voltage suitable for most MITSUBISHI commercial vehicles
- Sealed relay assembly suitable for under-hood or cab-mounted relay panels
Specifications
Only values printed on the original product page are listed. Anything not shown here we confirm in writing before you order.
| OEM No | MB358589, K8T51371, MD050217 |
|---|---|
| Type | Pump relay unit |
| Voltage | 12V |
| Pin Number | 5P |
| Application | MITSUBISHI commercial vehicles |
| 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
- Printed circuit board with switching and protection components
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
PCB assembly and soldering
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 pin pattern 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 |
Use Guide
- Confirm the truck is a 12V system before fitting
- Match the 5-pin housing against the old relay before ordering
- Isolate the battery, unplug the failed relay from the relay panel and fit the replacement in the same orientation
- Test the fuel pump engagement and deactivation sequence before releasing the vehicle
- If the pump runs continuously, check the control signal and pump earth before condemning the relay
Also Listed Under
Questions About This Part
Which MITSUBISHI models does MB358589 fit?
It is listed for MITSUBISHI commercial vehicles and cross references K8T51371 and MD050217. 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 Pump Relay Unit for MITSUBISHI MB358589 12V 5P
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.