Starter Relay 1337210728/26/31 for DENSO 24750-13700-71 182800-3020 for Electric Vehicle
A 48V 100A-200A starter relay assembly that cross references DENSO 24750-13700-71 and 182800-3020, fitted to electric vehicles. It controls the high-current circuit between the battery and the starter motor during cranking. Factory reference 1337210728, 1337210726, 1337210731. 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 DENSO part numbers so one line item covers multiple electric vehicle builds
- 100A-200A current rating supports high-power electric vehicle starter motors without overheating
- 48V system voltage matches the electrical architecture of modern electric commercial vehicles
- Direct plug-in replacement with no rewiring required at the workshop
- 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
- Electric vehicle fleet maintenance teams replacing failed starter relays after repeated cold cranking attempts
- Aftermarket distributors stocking DENSO cross-references for electric truck and bus repair networks
- OEM and ODM suppliers integrating the relay into new electric vehicle production lines
- Repair chains diagnosing no-crank conditions in electric vehicles where the starter relay is suspected
Who It Is For
- Truck and bus parts importers who buy against DENSO OEM numbers
- Aftermarket distributors serving electric commercial vehicle fleets
- Fleet maintenance managers running electric trucks and buses with DENSO electrical systems
- Auto electrical repair shops that stock relays by voltage and current rating
Problems It Solves
Symptoms on the Vehicle
- Starter motor that fails to engage due to a failed relay in the high-current cranking circuit
- Intermittent cranking or no response when turning the key, caused by a degraded relay contact
- Original DENSO relays that are slow to source and expensive through the dealer network
- Mixed electric vehicle fleets that would otherwise need three separate relay part numbers
Technical Features
- High-current switching for 48V electric vehicle starter systems
- 100A-200A continuous current rating with thermal protection
- Sealed relay housing suitable for under-hood or under-floor mounting
- Three-pin terminal configuration matching the original DENSO pattern
- Electromagnetic coil actuation with low control current draw
- Robust construction for vibration and shock in electric vehicle environments
Specifications
Only values printed on the original product page are listed. Anything not shown here we confirm in writing before you order.
| OEM No | 1337210728, 1337210726, 1337210731 |
|---|---|
| Reference No | 24750-13700-71, 182800-3020 |
| Factory No | 1337210728, 1337210726, 1337210731 |
| Type | Starter relay |
| Voltage | 48V |
| Current Rating | 100A-200A |
| Application | Electric vehicle |
| 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 terminals with tin plating
- Electromagnetic coil with insulated copper wire
- Contact set with silver alloy 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 insulation
PCB and contact assembly
Housing moulding and terminal insertion
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
| DENSO dealer original relay | Same fitment and electrical rating 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 vehicle is a 48V system before fitting
- Match the three-pin terminal pattern against the old relay before ordering
- Isolate the battery, unplug the failed relay from the starter control panel and fit the replacement in the same orientation
- Test cranking function and ensure the relay engages and releases cleanly before releasing the vehicle
- If the starter does not engage, check the battery voltage, control circuit, and ground connection before condemning the relay
Also Listed Under
Questions About This Part
Which electric vehicle models does 24750-13700-71 fit?
It is listed for electric vehicles using DENSO starter systems. 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.
Related Products
Ask for a Quote on Starter Relay 1337210728/26/31 for DENSO 24750-13700-71 1828
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.