Stock assurance
500-1,000 common units kept in stock In-stock items ship the same day
RUIAN OUPIN AUTO PARTS
One-stop sourcing
for every vehicle
Focused on water temperature sensors, thermo switches, and oil pressure switches — any model can be customized.
Stock 500–1,000 unitsCommon models ready to ship
Same-day dispatch500 units or fewer by SF Express
Resistance tolerance ≤1%Industry standard 3%–5%
Global supplyServing the Middle East, Southeast Asia, and Africa
PRODUCTS
Product showcase
One-stop sourcing for parts across brands and vehicle systems
Water Temperature Sensor OP-B001
OE: 83420-20020 83420-20010 83420-16010 83420-20011 53420-12010
Thermo Switch OP-C001
OE: MB356704
Oil Pressure Switch OP-A002
OE: 25240-89900 25240-89910 25240-D9700 25240-89901 25240-89911 25240-Y9501 25240-89902 2504-66-790 25240-Y9700 37240-PLZ-D00 37240-PT0-004 37240-PT0-014 37240-PT0-023 37240-PD2003 37240-PD2004 12 52 561 12 52 565
Water Temperature Sensor OP-B002
OE: 83420-16050 83420-05010 83420-20040 83420-AA410 TX78
Thermo Switch OP-C002
OE: MB-439576 MB-568959 25360 37250
Oil Pressure Switch OP-A003
Water Temperature Sensor OP-B003
OE: 83420-16040 83420-20030 J83 420 160 40
Thermo Switch OP-C003
OE: MB439576
SERVICES
Service standards
Because we care, we work efficiently; because we work efficiently, you can buy with confidence.
Warehouse · inspected before dispatchFast lead time
In stock: same day / Production: 3 days Custom: 10 days / Tooling: 1 month
Flexible pricing
Tiered quotations / Free samples We compete on value, not low prices
After-sales
Fast replacement for wrong or missing shipments Returns or replacements for quality issues
Stable quality
Clean, full-weight copper housings Resistance tolerance ≤1%
Custom support
Text/numbers without tooling Tooling from 5,000 units
INQUIRY
Send an inquiry
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PROCESS
Cooperation process
Three steps to start a partnership, with a clear owner at every step
1
Submit requirements
Share company information or a requirement form, or contact us directly.
2
Fast response
Our team responds within 24 hours to confirm fitment and lead time.
3
Deliver materials
Receive catalogs, quotation templates, product photos, and supporting files.
Explore more resources →ABOUT US
About EURPIN
More than products, we care about every order you place.
Ruian Oupin Locomotive Parts Co., Ltd. develops and produces water temperature sensors, thermo switches, oil pressure switches, and related automotive electrical parts.
We believe trust and care are the key to every transaction. With EURPIN, you buy with confidence.
Learn more →